Sealing system for a rotary rock bit

Details Sealing system for a rotary rock bit Sealing system for a rotary rock bit

E - Fixed Constructions

21

B

255/72, 255/73

E21B 10/00 (2006.01) E21B 10/22 (2006.01) F16C 33/76 (2006.01) F16C 33/78 (2006.01) F16J 15/32 (2006.01) F16J 15/34 (2006.01)

Patent

CA 1064013

SEALING SYSTEM FOR A ROTARY ROCK BIT Abstract of the Disclosure A sealing system acts as a barrier to the drilling fluid, pulverized cuttings and other materials in the borehole two prevent the materials from entering the bearing area of a rotary rock bit. The bit body and the base of the cone cutter cooperate to retain the seal unit. The seal is located in a groove and an effective seal is provided without reducing the bearing capacity of the bit's bearing system. The sealing system allows excessive pressures in the lubricant to be relieved. -1a-

284364

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