Elastomeric guard seal for tubular connections

Details Elastomeric guard seal for tubular connections Elastomeric guard seal for tubular connections

1984-04-30

1990-05-29

Smith, Gary L.

Pipe joints or couplings

With fluid pressure seal

Wedged gasket

285334, 285351, F16L 1504

Patent

active

049289993

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.

REFERENCES:
patent: 3489438 (1970-01-01), McClure

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