The Trap-Seal is a trapezoidal-shaped O-ring that is designed to stay securely lodged under the groove lip of the O-ring face seal (ORFS ... The O-ring's design provides consistently positive ...

Leaking face ... rings. There is little or no measureable wear and a full 360-deg. contact pattern on the mating rings. Cause: Secondary seal leak caused by nicked, scratched, or porous seal ...