Seals with low thermal expansion

Details Seals with low thermal expansion Seals with low thermal expansion

F - Mech Eng,Light,Heat,Weapons

16

J

F16J 15/20 (2006.01) F16J 15/16 (2006.01) H02G 3/06 (2006.01)

Patent

CA 2141199

An improved sealing system. The sealing system provides for the use of a body (2) defining a cavity (4). The cavity is filled or substantially filled with a material (6) having a lower coefficient of thermal expansion than the body and, in some embodi- ments, a material that expands at low temperature. During low temperature operation, the body may shrink considerably, but the compressive force applied between two surfaces will not decrease appreciably due to the internal, low coefficient of thermal ex- pansion filler. Accordingly, the risk of seal failure at low temperature is substantially reduced.

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