ROTARY SEAL ASSEMBLY AND ROTARY SEAL FOR HIGH-PRESSURE APPLICATIONS

摘要

A rotary seal assembly includes a viscoelastically deformable support ring having a high-pressure side first support leg connected by a back portion to a low-pressure side second support leg. The legs laterally delimit an annular groove of the support ring open toward the sealing surface retaining a sealing ring. A rubber-elastically deformable pre-loading element between the seal retaining structure and the support ring pre-loads the sealing ring against the sealing surface via the support ring. A pressure activation of the pre-loading element by an operating pressure prevailing on the high-pressure side, the pre-loading element, which is supported on a support surface of one of the two machine parts, is deformed in the pre-loading direction proportionally to the operating pressure such that the support ring is moved toward the sealing surface with the low-pressure-side support leg thereof and is moved away from the sealing surface with the high-pressure-side support leg thereof.