Stem sealing for high pressure valve
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United States of America Patent
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Nov 12, 1985
Grant Date -
N/A
app pub date -
Dec 24, 1984
filing date -
Dec 24, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A stem sealing apparatus having a plurality of inserts (40, 42, 44, 46) for accepting a flowable sealant (52, 54) between deformable seal rings (60, 62). The inserts are loosely stacked (100), and maintained in compression between a packing gland (50) and a shoulder 32. Expansion of the flowable sealant at high temperature cannot shear the inserts apart.
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