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  • Name: GRE
  • Num: GRE

GRE type stem combination seal

Made of rubber material U-ring and O-ring combination, O-ring mainly as elastic force components to ensure that U-ring lip close to the sealing contact surface, in order to achieve sealing mechanism, commonly used in lower pressure Valve, with good anti-leakage performance, as a valve stem of a low-cost sealed and widely used in the oil industry.

As the sealing surface is large, so the friction will be larger, resulting in a larger torque.


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