SPRING ENERGIZED SEAL ASSEMBLY

摘要

A multi-element seal (10) for sealing the space between two relatively reciprocating and/or rotating surfaces at both high and low pressure sealing ring (26) and an elastomeric low pressure sealing ring (24). The low temperature sealing characteristic of the assembly is improved by including a spring energizer (28) located annularly within the low pressure sealing ring (24). The spring energizer (28) is made from metal or other material which increases the sealing bias of the low pressure ring (24) against both the high pressure sealing ring (26) and the reciprocating surfaces at extremely low temperatures. As a result, leakage of fluid or gas past the seal at extremely low temperatures and low pressures is reduced.