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The Grayloc® Metal to Metal Seal
A Grayloc® connector has three components: a metal seal ring, two hubs and a clamp assembly.
The seal ring is a “T” in cross section. The leg of the “T” forms a rib that is held by the hub faces as the connection is made. The two arms form lip seals that create an area of sealing surface with the inner surface of the hub. The clamp fits over the two hubs and forces them against the seal ring rib.
As the hubs are drawn together by the clamp assembly, the seal ring lips deflect against the inner sealing surfaces of the hubs. This deflection elastically loads the lips of the seal ring against the inner sealing surface of the hub, forming a self-energized seal. Internal pressure reinforces this seal, so that the sealing action of the Grayloc® connector is both self-energized and pressure-energized.