F - Mech Eng,Light,Heat,Weapons – 16 – J
Patent
F - Mech Eng,Light,Heat,Weapons
16
J
277/42, 277/52
F16J 15/18 (2006.01) F16K 41/04 (2006.01)
Patent
CA 1260510
ABSTRACT A fluid packing comprises a stacked assembly of V-ring seal elements, special backup/energizing rings interspersed between the seal elements and a spring energized lip seal ring that is retained in functional position by an adapter ring having a generally T-shaped cross-sectional configuration. This assembly is radially compressed to establish an initial seal between the stem or screw in the chamber wall when installed in a stem packing chamber of the valve or choke or in a packing chamber of a wellhead lockdown screw. The assembly is capable of creating additional compression and deformation to fill annular spaces that may exist between the seal elements when the assembly is subjected to additional pressures resulting in an essentially void free dynamic packing capable of with-standing very high pressures and temperatures.
501776
Jakubowski William J.
Ungchusri Tep
Fmc Technologies Inc.
Sim & Mcburney
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