PY-type end-face sealing ring

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Performance and Purpose

This end-facing seal has a “Y”-shaped cross section. It is designed specifically for steel pipe hydro-static testing machines to seal the plane on water filling and air exhaust test heads. Close contact between the two planes is required during installation, and attention should be paid to the installation direction of the sealing ring.



  1. The support skeleton enhances the overall strength of the seal ring and the sealing capacity of the sealing ring can be increased by working pressure.
  2. The sealing material has the advantage of high strength, high hardness and good elasticity

Working conditions

Compliant for use with several standards about hydraulic testing requirements including API 5CT-2018, ISO11960-2011 Petroleum and natural gas industries—Steel pipes for casing or tubing, GB/T9711-2017; GB/T8163-2018 for seamless steel tubes; GB/T3091-2015 for welded steel pipes.

Working pressure: ≤ 80 MPa

Working temperature: -20 to +80℃

Working medium: water, emulsion, hydraulic oil 

Material: Polyurethane