stem seal造句

• Standard for qualification of control valve stem seals
  控制阀门密性封的鉴定标准
• Products oil seals special seal valve stem seal
  产品介绍油封-密封件特殊油封汽门油封
• Safer and tighter stem seal
  更安全、更紧密地阀杆密封。
• Backseat ? machined bonnet stem bushing provides back - up stem seal
  后座-经过精密加工的阀盖阀杆衬套实现后座阀杆密封。
• Valve stem seal bonded seal
  汽门油封
• Body stem seal
  本体阀杆密封
• Valve stem seal
  汽门油封
• It has two stem sealing : one is stuffing box and another is toroidal sealing ring ( o - ring )
  本阀阀杆密封分为两种形式：一为填料密封；一为o型密封环密封。
• Two o - rings in gland follower provide additional stem seal protection to assure tightness of less than 1 ppm
  密封压盖随动件内的两个o形环为阀杆提供更加安全的密封保护，以确保泄漏率不会超过百万分之一。
• If necessary , the stem and stem seal may be removed from the bonnet by removing the retainer ring and handle and screwing the stem out the under - side of the bonnet
  如果必要的话，阀杆和阀杆密封可能要从阀帽上拆卸下来，要在阀帽的下方先拆卸挡圈和手柄，以及阀座上的螺丝。