NASA NTRS · 19670000599
Dynamic captive plastic seal
Abstract
Fluoroplastic material held captive between valve sealing surfaces of 16 to 125 rms microinches provides zero leakage to a high-pressure line at high cryogenic temperatures, when the plastic material is subjected to sufficient stress. This sealing technique makes unnecessary the use of superfinished valve sealing surfaces.
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Dryer, E. O.. 1967-12-01. Dynamic captive plastic seal. https://ntrs.nasa.gov/citations/19670000599
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