Method for making a shaft seal

Details Method for making a shaft seal Method for making a shaft seal

1977-02-02

1979-06-26

Lowe, James B.

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

Simultaneous severing and shaping, or severing while work...

295271, 264262, 264263, 264266, 264268, 264277, 425DIG47, B29D 300, B29D 2301, B29G 300, B29H 910

Patent

active

041592980

ABSTRACT:
A method for making a shaft seal of the type including an elastomeric body and a polytetrafluoroethylene sealing element comprising inserting a metal shell (if employed in the seal), a synthetic rubber blank prep form and a polytetrafluoroethylene sealing element into a transfer or compression mold, and then closing the mold to simultaneously form a sealing lip portion of the polytetrafluoroethylene sealing element into the desired shape, mold the rubber into the desired shape and bond the rubber to the shell (if used) and to the anchor portion of the polytetrafluoroethylene sealing element.

REFERENCES:
patent: 2804324 (1957-08-01), Stallings
patent: 3276115 (1966-10-01), Hansz
patent: 3493645 (1970-02-01), Sanderson et al.
patent: 3851037 (1974-11-01), Day et al.
patent: 3875654 (1975-04-01), Ushijima
patent: 4038359 (1977-07-01), Pendleton

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