Coated ring seal

Abstract

A ring seal includes an annular body having a first side surface, a second side surface opposite the first side surface, a top surface, and a bottom surface opposite the top surface. A coating of silica particles is disposed on at least one of the first side surface, the second side surface, the top surface, and the bottom surface of the annular body. The coating of silica particles includes a composition comprising diatomaceous earth.

Description

technical field [0001] The present invention relates to ring seals, and more particularly to ring seals coated with diatomaceous earth. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not constitute prior art. [0003] There are many applications where seals are required between rotating and stationary components in order to isolate fluids at different pressures over the length of these components. These applications typically include powershift transmissions and engines in motor vehicles. Typically, an annular or shaft seal is used to seal the rotating part from the stationary part in order to prevent leakage of fluid from one side of the annular seal to the other. Depending on the application, the shaft or the tunnel in which the shaft runs can be a rotating part. The case described here is for a rotating channel and a fixed shaft, but the opposite case is completely analogous. ...

AI Technical Summary

Problems solved by technology

This deformation reduces the durability of the annular seal and can increase the leakage of fluid on this surface

This leak in turn requires additional power from the fluid supply to compensate for the loss of flow

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