Shaft seal and process for manufacturing shaft seals
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United States of America Patent
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Issued Date -
Sep 25, 2003
app pub date -
Feb 13, 2003
filing date -
Feb 28, 2002
priority date (Note) -
Abandoned
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Abstract
Process for manufacturing shaft seals, in which at least one PTFE washer equipped with hydrodynamic seals is arranged in working position with at least one stiffening member inside a die-casting machine. The stiffening member and the PTFE washer are at least partially coated with an elastomer. At least one zone that alters the cross-section of the PTFE washer is cast in the die-casting machine between the seals and the elastomer coating.
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