Double-ring seal avoids expense of remachining or redesigning valve parts. Mating fittings on valve sealed by pair of rings - one O-ring and backup ring. Backup ring fills relatively large gap between parts. Prevents softer O-ring from being pushed into and through gap.
Sealing a Loosely Fitting Valve Assembly
NASA Tech Briefs ; 10 , 5
1986-09-01
Sonstige
Keine Angabe
Englisch
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