Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1993-03-09
1999-06-08
DePumpo, Daniel G.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277404, F16J 1520
Patent
active
059098791
ABSTRACT:
At least one of the mating wear surfaces of a sliding mechanical seal is coated with diamond. The coating includes an underlayer of high resistance to wear and an overlayer with a reduced resistance to wear as compared to that of the underlayer. The reduced wear resistance of the overlayer prevents damage by the diamond to the opposing mating surface during the wear-in period of use.
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DePumpo Daniel G.
Norton Company
Ulbrich Volker R.
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