Method and apparatus for sealing at a sliding interface

Details Method and apparatus for sealing at a sliding interface Method and apparatus for sealing at a sliding interface

F - Mech Eng,Light,Heat,Weapons

16

J

F16J 15/02 (2006.01) E21B 33/10 (2006.01) E21B 33/00 (2006.01)

Patent

CA 2063515

ABSTRACT OF THE DISCLOSURE A seal is provided for containing fluid (either gaseous or liquid fluids) under variable pressure in a pressurized region to prevent leakage into a less pressurized region. First and second interfacing seal members are provided and adapted to slidably engage one another at an interface region during makeup of the seal apparatus. A seal region is carried by the first seal member at the interface region and composed of a deformable material. A seal bead is carried at the interface region by the second seal member and protrudes therefrom. The seal bead is composed of a material less malleable than the seal region for seating in the seal region. At least a portion of the second seal member adjacent the seal bead forms a containment barrier with the pressurized region on one side and the less-pressurized region on the opposite side. A pressure differential will develop between the pressurized region and the less- pressurized region which urges the seal bead into tighter engagement with the seal region in an amount corresponding to the pressure differential.

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