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Elastomeric seal assembly having auxiliary annular seal components

  • US 20060032673A1
  • Filed: 08/16/2004
  • Published: 02/16/2006
  • Est. Priority Date: 08/16/2004
  • Status: Active Grant
First Claim
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1. A drill bit, comprising:

  • a cone cutter rotatably mounted on a journal shaft, said cone cutter including a seal gland;

    an annular elastomeric sealing seal disposed about said journal shaft in said seal gland, said sealing seal including a dynamic sealing surface for dynamically engaging said journal shaft and a static sealing surface opposite said dynamic sealing surface; and

    at least one auxiliary annular seal member disposed about said journal shaft in said seal gland and engaging said static sealing surface of said sealing seal and said seal gland.

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