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Dual dynamic rotary seal

  • US 6,598,690 B2
  • Filed: 08/03/2001
  • Issued: 07/29/2003
  • Est. Priority Date: 08/03/2001
  • Status: Expired due to Term
First Claim
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1. A roller cone drill bit comprising a seal adapted to seal between a bit body and a roller cone rotatably mounted on the bit body, the seal comprising:

  • a seal body formed from a material adapted to energize the seal after compression thereof;

    a first dynamic seal surface formed on the seal body and adapted to seal against the bit body; and

    a second dynamic seal surface formed on the seal body and adapted to seal against the roller cone, the first and second dynamic seal surfaces each formed from a material adapted to withstand relative motion between the first dynamic seal surface and the bit body and between the second dynamic seal surface and the roller cone.

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