Elastomeric guard seal for tubular connections
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United States of America Patent
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-
May 29, 1990
Grant Date -
N/A
app pub date -
Apr 30, 1984
filing date -
Apr 30, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A tubular connection comprising a pin end and a box end of adjacent joints having a conical metal-to-metal seal located with respect to the pin end forward thread set and its nose, the improvement of a circumferential groove in the pin end forward of the metal-to-metal seal which carries an elastomeric sealing ring radially extending beyond the limits of the groove. The metal-to-metal makeup of the connection causes by conical deformation a slight wedge shape opening to form forward of the metal-to-metal seal. The elastomeric material extrudes to fill this wedge shape opening to thereby form a compound seal forward of the metal-to-metal seal.
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