Anti-diffusion metal coated O-rings

摘要

A method for inhibiting diffusion of gases and/or transmission of photons through elastomeric seals and a diffusion inhibiting elastomeric seal wherein at least a portion of the surface of a diffusion inhibiting elastomeric seal is coated with a compatibly-deformable, malleable metal coating.

主权项

1. A gas diffusion inhibiting dual seal o-ring for sealing a joint between a fluid under pressure and a vacuum, comprising:
a solid elastomeric body including an interior surface and an exterior surface; at least one of said interior surface and said exterior surface of said elastomeric body is uncoated to form a primary seal portion; the side opposing said uncoated side of said elastomeric body coated with a malleable metal film coating of a constant thickness forming a secondary seal portion; said metal coating being compatibly deformable with said solid elastomeric body, whereby said primary seal portion forms a primary seal in said joint and said metal coating on said secondary seal portion establishes a secondary seal in said joint; and said metal coating of said secondary seal portion preventing gas diffusion through said dual seal o-ring.