# US 4,796,351 A · Gaskets

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- Number: US 4,796,351 A
- Document ID: US4796351A
- Status: Granted
- Kind: A
- Application number: 06/494,015
- Filed: 1983-05-12
- Granted: 1989-01-10
- Earliest claimed: 1982-05-18
- Assignees: Flexitallic Limited
- Inventors: Colin Gee
- Web page: https://patentgrep.com/patent/US4796351A

## CPC

- F16J 15/125: {generally perpendicular to the surfaces}
- Y10T 29/49879: Spaced wall tube or receptacle
- F16J: PISTONS {(specially adapted for dampers F16F9/32)}; CYLINDERS; SEALINGS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

An annealed, high tensile strength, heat hardenable metal strip is shaped into a spiral wound gasket profile prior to heat treating the strip to harden it and then winding it with a strip of sealing material into a spiral wound gasket.

## Claims

### Claim 1

A method of making a spiral wound gasket having improved elastic recovery comprising the steps of:
(1) profiling a strip of an annealed high tensile strength, precipitation hardening grade of alloy steel strip into a spiral wound gasket profile, followed by
(2) heat treating the strip and thereafter
(3) winding and interleaving it with a strip of a sealing material into a spiral wound gasket.