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Static Applications
It is advisable to take O-Rings with the largest cross section that is
available, because the O-Rings can then be used for high pressures (up
to 2000 atm) and will also be safe when the pressure load is subject to
variation, ie when the equipment is subject to expansion and shrinkage.
The diametric compression of the O-Ring is about 15-20%, in the case of
small cross sections up to 30%.
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Flanged Seals
Flange sealing requires special groove dimensions. This construction
provides a 100% perfect seal against fluids and gases under high or low
pressure, even when the pipes are subject to vibration. The dimensions
must be such that when the O-Ring is exposed to internal pressure, its
outer circumference is sitting close. In the case of external pressure the
O-Ring must sit close on the inner circumference.
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