| 摘要 |
A seal for a rolling cutter drill bit is provided. The seal has a ring shaped seal body having an inside diameter and an outside diameter, and a mud lobe and a grease lobe extending from the inside diameter of the seal body. The seal body has an asymmetrical, longitudinal cross-section such that, when positioned in a seal groove of the drill bit and compressed therein under downhole pressure, the rand lobe and grease lobe are maintained in contact with a seal land of the seal groove. The seal body may be provided with a garter spring and/or a textured pattern. |
