1. Standard materials

Sealing body: filled with polytetrafluoroethylene or polyurethane PU

Elastomer: Nitrile rubber NBR

Retainer ring: nylon PA or Polyoxymethylene POM

2. Application scope

Hydraulic reciprocating Motor system. The heavy-duty bidirectional piston seal is excellent in high-pressure working conditions. Especially suitable for long stroke and wide range fluid and high-temperature applications, suitable for larger piston clearances. Mainly used in heavy-duty or engineering machinery, cylinder piston seals have good leakage control, extrusion resistance, and wear resistance, such as excavators, heavy-duty hydraulic cylinders, etc.

When designing and selecting, reference can be made to Trelleborg's PHD series, NOK's SPGW series, Parker's Y3 series, and AS's KHD series standards.

3. Features and advantages

 

1. The groove structure is simple;

 

2. Due to the large extrusion gap, it can be safely used in media with dirt;

 

3. No crawling during startup, stable operation;

 

4. Large extrusion gaps can be allowed;

 

5. Long service life;

 

6. Low static and dynamic friction coefficient and low wear;

 

7. Good dynamic and static sealing performance.