Compressible differential pressure energized seals for...

B - Operations – Transporting – 01 – D

Patent

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Details

B01D 27/08 (2006.01) B01D 29/33 (2006.01)

Patent

CA 2155414

A compressible differential pressure energized seal (18) coacting between a filter element (10) and the like and a housing (21) comprises a compressible portion (35) having a large open end (36) and a small open end (37), the large end (36) directed toward and contacting the housing (21) and the small end (37) directed toward the filter (10) element; and an annular flange (38) integrally attached to the compressible portion (35) at its small end (37) and extending outwardly, the flange (38) operatively communicating with the filter element (10). The seal (18) may also include at least one flap (43) to center the filter element (10) to which it is attached onto a centering rod (31) carried within the housing (21). Such a seal (18) is compressed when the element (10) is operationally enclosed within the housing (21) to provide a leak-proof seal during operation and is self-energizing during operation such that as the differential pressure increases, it more forcefully engages thesealing surface.

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