Title: Mechanical seals

Abstract: A long wearing mechanical seal assembly comprising two paired sealing members of predetermined composition wherein the contacting surfaces are in rotating relationship with respect to one another, and wherein the members cooperate to prevent fluid flow between the contacting surfaces, a first one of said members being composed of a material suitable for a seal seat (e.g., cast iron, alumina ceramic or chrome plated steel) and the second member comprising a seal composed of a graphitic matrix that is filled with particulate, non-abrasive matter (e.g. Nepheline syenite, alpha-alumina or quartz) which is harder than the matrix and which has a microhardness greater than the matric to prevent the seal from wearing at the wear rate of the matrix.

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Inventors: Floyd, James R. (Saginaw, MI, US)
Dalenberg, Paul N. (Saginaw, MI, US)
Slivensky, Robert B. (Bridgeport, MI, US)

Application Number: 686039
Filing Date: 1976-05-13
Publication_date: 1977-07-19
Assignee: The Wickes Corporation (San Diego, CA)
Primary Class(es): 277/405 277/406, 277/407, 277/938, 277/941
Other Classes:
US Patent Ref:

2403298	Jul, 1946	Payne	277/96.
2600321	Jun, 1952	Pyle	277/DIG.
2615533	Oct, 1952	Cliborn	277/96.
3822066	Jul, 1974	Keys	277/96.
3969451	Jul, 1976	Floyd et al.	277/96.

Other Refs:
Primary Examiner: Smith, Robert I.
Assistant Examiner:
Attorney: Learman & McCulloch