Sybron Corporation

The Pfaudler Co. Inc.

James W Chapman

Franklyn J Amorese

Roland R Van Der Beck

Vincent J Piarulli

A stationary seal seat for a package rotary mechanical seal is formed by compression sealing a ceramic ring within a glass coated metal ring. The ceramic provides the seat for a rotating seal member and the metal ring provides the surfaces which receive the loading forces when mounting the stationary seal seat. The glass coating on the metal functions to fuse the ceramic and metal rings together and provides a gas tight seal at the interface between the two rings. In addition, the ceramic ring has a peripheral groove defining a fluid passage for circulation of a coolant around the ceramic.

Compression sealed composite seal seat with cooling passages

A high impact sight glass assembly and production method are described, in which the glass lens is fused into an enamel coated metal ring such that the glass lens is fused to the enamel coating and the entire glass area is under compression. The glass lens is placed in the bore of a flange, and the lens and flange ring are heated, whereby the lens flows to conform to the bore of the flange and is fused to the enamel coating.

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Penfield, NY, United States of America

James W Chapman