The Fluorocarbon Company

Dean R Bainard

Stephen A Sekulich

Dick L Kanitz

Terry M Lewis

James R Goodman

A seal element is positioned within an outer casing and has an anchoring portion which is sealingly secured to the periphery of a rotating shaft by a surrounding coil spring. A radial portion on the seal element extends radially outward from the anchoring portion and passes between two spaced washers, providing a dynamic seal therebetween. An arm extends from one face of the seal element radial portion to resiliently bias the radial portion into engagement with the washers. A spiral hydrodynamic groove on the other face of the seal element radial portion automatically pumps fluid back to the fluid side of the seal apparatus as the shaft and seal element rotate together.

Dynamic rotary face seal

A method of producing a hydrodynamic sealing element is disclosed wherein washer-like sealing elements may be partially sliced from a cylindrical billet and formed to have an axially extending inner portion adapted to sealingly engage a rotating shaft. The inside surface of the axially extending portion is grooved to facilitate the sealing action. Grooving is accomplished by axial withdrawal action of the same cutting element that partially slices and forms the sealing element.

Growing community of inventors

Lake Wylie, SC, United States of America

Dean R Bainard