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BS 0 Series O-Ring Size Charts
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BS 0xx Series
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Nominal Size
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Actual Size
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BS
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Inches
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Inches
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Millimetres
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|
No
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I.D.
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W
|
I.D.
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±
|
W
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±
|
I.D.
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±
|
W
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±
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|
001
|
1/32
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1/32
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0.029
|
0.004
|
0.040
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0.003
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0.74
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0.11
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1.02
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0.07
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|
002
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3/64
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3/64
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0.042
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0.004
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0.050
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0.003
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1.07
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0.11
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1.27
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0.07
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003
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1/16
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1/16
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0.056
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0.004
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0.060
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0.003
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1.42
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0.11
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1.53
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0.07
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|
004
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5/64
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1/16
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0.070
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0.005
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0.070
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0.003
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1.78
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0.12
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1.78
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0.08
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|
005
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7/64
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1/16
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0.101
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0.005
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0.070
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0.003
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2.57
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0.12
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1.78
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0.08
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|
006
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1/8
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1/16
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0.114
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0.005
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0.070
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0.003
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2.90
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0.12
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1.78
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0.08
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|
007
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5/32
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1/16
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0.145
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0.005
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0.070
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0.003
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3.69
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0.12
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1.78
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0.08
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|
008
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3/16
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1/16
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0.176
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0.005
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0.070
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0.003
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4.47
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0.12
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1.78
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0.08
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009
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7/32
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1/16
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0.208
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0.005
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0.070
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0.003
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5.29
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0.12
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1.78
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0.08
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010
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1/4
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1/16
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0.239
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0.005
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0.070
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0.003
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6.07
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0.12
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1.78
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0.08
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011
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5/16
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1/16
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0.301
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0.005
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0.070
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0.003
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7.65
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0.12
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1.78
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0.08
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012
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3/8
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1/16
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0.364
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0.005
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0.070
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0.003
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9.25
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0.12
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1.78
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0.08
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013
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7/16
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1/16
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0.426
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0.005
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0.070
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0.003
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10.82
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0.12
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1.78
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0.08
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014
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1/2
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1/16
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0.489
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0.005
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0.070
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0.003
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12.42
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0.12
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1.78
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0.08
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015
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9/16
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1/16
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0.551
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0.005
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0.070
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0.003
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14.00
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0.12
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1.78
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0.08
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016
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5/8
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1/16
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0.614
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0.005
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0.070
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0.003
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15.60
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0.12
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1.78
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0.08
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|
017
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11/16
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1/16
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0.676
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0.005
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0.070
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0.003
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17.17
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0.12
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1.78
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0.08
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|
018
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3/4
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1/16
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0.739
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0.005
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0.070
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0.003
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18.77
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0.12
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1.78
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0.08
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019
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13/16
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1/16
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0.801
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0.006
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0.070
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0.003
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20.35
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0.15
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1.78
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0.08
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|
020
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7/8
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1/16
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0.864
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0.006
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0.070
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0.003
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21.95
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0.15
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1.78
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0.08
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021
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15/16
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1/16
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0.926
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0.006
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0.070
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0.003
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23.52
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0.15
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1.78
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0.08
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|
022
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1
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1/16
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0.989
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0.006
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0.070
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0.003
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25.12
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0.15
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1.78
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0.08
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023
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1 1/16
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1/16
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1.051
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0.006
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0.070
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0.003
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26.70
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0.15
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1.78
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0.08
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|
024
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1 1/8
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1/16
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1.114
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0.006
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0.070
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0.003
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28.30
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0.15
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1.78
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0.08
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025
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1 3/16
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1/16
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1.176
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0.006
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0.070
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0.003
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29.87
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0.15
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1.78
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0.08
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|
026
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1 1/14
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1/16
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1.239
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0.006
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0.070
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0.003
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31.47
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0.15
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1.78
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0.08
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027
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1 5/16
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1/16
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1.301
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0.006
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0.070
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0.003
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33.05
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0.15
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1.78
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0.08
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|
028
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1 3/8
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1/16
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1.364
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0.006
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0.070
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0.003
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34.65
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0.15
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1.78
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0.08
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029
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1 1/2
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1/16
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1.489
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0.010
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0.070
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0.003
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37.82
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0.25
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1.78
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0.08
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030
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1 5/8
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1/16
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1.614
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0.010
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0.070
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0.003
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41.00
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0.25
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1.78
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0.08
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031
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1 3/4
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1/16
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1.739
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0.010
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0.070
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0.003
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44.17
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0.25
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1.78
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0.08
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032
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1 7/8
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1/16
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1.764
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0.010
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0.070
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0.003
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47.35
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0.25
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1.78
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0.08
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033
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2
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1/16
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1.998
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0.010
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0.070
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0.003
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50.52
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0.25
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1.78
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0.08
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|
034
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2 1/8
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1/16
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2.114
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0.010
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0.070
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0.003
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53.70
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0.25
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1.78
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0.08
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|
035
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2 1/4
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1/16
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2.239
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0.010
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0.070
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0.003
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56.87
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0.25
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1.78
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0.08
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|
036
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2 3/8
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1/16
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2.364
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0.010
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0.070
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0.003
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60.04
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0.25
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1.78
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0.08
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037
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2 1/2
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1/16
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2.489
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0.010
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0.070
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0.003
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63.22
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0.25
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1.78
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0.08
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|
038
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2 5/8
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1/16
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2.614
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0.010
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0.070
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0.003
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66.40
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0.25
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1.78
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0.08
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|
039
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2 3/4
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1/16
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2.739
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0.015
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0.070
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0.003
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69.57
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0.38
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1.78
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0.08
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|
040
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2 7/8
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1/16
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2.864
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0.015
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0.070
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0.003
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72.75
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0.38
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1.78
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0.08
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|
041
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3
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1/16
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2.989
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0.015
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0.070
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0.003
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75.92
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0.38
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1.78
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0.08
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|
042
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3 1/4
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1/16
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3.239
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0.015
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0.070
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0.003
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82.27
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0.38
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1.78
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0.08
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|
043
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3 1/2
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1/16
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3.489
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0.015
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0.070
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0.003
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88.62
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0.38
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1.78
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0.08
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|
044
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3 3/4
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1/16
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3.739
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0.015
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0.070
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0.003
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94.97
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0.38
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1.78
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0.08
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|
045
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4
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1/16
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3.989
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0.015
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0.070
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0.003
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101.32
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0.38
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1.78
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0.08
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|
046
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4 1/4
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1/16
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4.239
|
0.015
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0.070
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0.003
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107.67
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0.38
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1.78
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0.08
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|
047
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4 1/2
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1/16
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4.489
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0.015
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0.070
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0.003
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114.02
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0.38
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1.78
|
0.08
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|
048
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4 3/4
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1/16
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4.739
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0.015
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0.070
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0.003
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120.37
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0.38
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1.78
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0.08
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|
049
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5
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1/16
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4.989
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0.023
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0.070
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0.003
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126.72
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0.58
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1.78
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0.08
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|
050
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5 1/4
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1/16
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5.239
|
0.023
|
0.070
|
0.003
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133.07
|
0.58
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1.78
|
0.08
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