High purity sealing material

Details High purity sealing material High purity sealing material

2007-02-06

2007-02-06

Johnson, Christina (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

C264S319000

Reexamination Certificate

active

10800597

ABSTRACT:
Elastomeric sealing elements such as gaskets, O-rings and diaphragms suitable for use as seals in ultra-pure water systems are fabricated from foamed PVDF by compressing foam blanks up to a 5:1 to 7:1 ratio in a heat environment of about 300° F. to about 350° F. The compressed and heated blank is held for a time period sufficient to displace substantially all air from the foam pores and released.

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