Garlock, Inc.

Darrell D Pendleton

A seal 10 for sealing between a splined shaft 30 and a housing 32 having a bore 34 through which the splined shaft 30 extends. The seal 10 includes a shell 12 and an elastomeric body 14 bonded thereto. The body 14 includes a mounting portion 16 and a toothed seal portion 18 having a plurality of seal teeth 42 that are matingly received in the grooves 48 in the splined shaft. The seal teeth 42 are molded to provide interference 'y' at the top and bottom of the teeth 42 and interference 'x' at the sides; x.gtoreq.150% y. The seal 10 also has a seal 24 to seal against the housing 32.

Splined shaft seal article and apparatus

A shaft seal of the type including a metal case and a polytetrafluoroethylene sealing element, is provided with an auxiliary sealing lip by providing a radial flange of the metal case with a plurality of circumferentially spaced-apart apertures therethrough and molding an annular filler ring of synthetic rubber in the space between the sealing element and the metal case such that the rubber also flows through the apertures to the other side of the radial flange of the metal case and forms an auxiliary lip there. The filler ring chemically bonds to the metal case and mechanically bonds to the sealing element to lock the sealing element in place while also forming an auxiliary lip.

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Gastonia, NC, United States of America

Darrell D Pendleton