目前，转轴密封在许多钻采设备中都是最关键的元件，设备的可靠性与经济性常常受到它的影响。现广泛应用的是常规合成橡胶及高性能塑料密封件（如迷宫式密封、弹簧加力聚四氟乙烯密封、V形密封、U形圈密封）。它们都是靠强力密封的，且都存在着同样的基本缺声、：当其密封良好 At present, shaft sealing is the most critical element in many drilling equipment, and the reliability and economy of the equipment are often affected by it. Widely used are conventional elastomers and high performance plastic seals such as labyrinth seals, spring-loaded PTFE seals, V-seals, U-ring seals. They are all strongly sealed, and they all have the same basic lack of sound: when they seal well