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72309 XCMG GR2605 motor grader seal
- Model: 72309
- Type: O-ring seal
- Material: NBR (oil-resistant)
- Hardness: Shore A 70±5
- Working Pressure: Suitable for conventional working pressure of construction machinery hydraulic and transmission systems
- Operating Temperature: -30℃～120℃
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Product Details:
72309 XCMG GR2605 motor grader seal
72309 is a special sealing element for hydraulic systems, gearboxes and clutch oil circuits of construction machinery. Made of oil-resistant and aging-resistant elastic rubber, it is mainly used for dynamic and static sealing of pistons, shaft ends, oil passage interfaces and other parts to prevent leakage of hydraulic oil or gear oil, and block external dust and moisture intrusion to ensure stable system oil pressure and normal operation of components.
Technical Parameters
- Model: 72309
- Type: O-ring seal
- Material: NBR (oil-resistant)
- Hardness: Shore A 70±5
- Working Pressure: Suitable for conventional working pressure of construction machinery hydraulic and transmission systems
- Operating Temperature: -30℃～120℃
- Structure: Circular cross-section ring structure with good resilience
- Features: Gear oil resistance, anti-aging, reliable sealing, not easy to permanent deformation
Application Scenarios
Suitable for gearbox clutch pistons, hydraulic valve bodies, oil passage pins, end covers, oil cylinders and various oil circuit interfaces of construction machinery such as loaders, graders, rollers and forklifts. Used in static or low-speed dynamic sealing positions to achieve oil sealing and pressure maintenance, adapting to vibration, high temperature and continuous oil scouring conditions.
Common Faults & Troubleshooting
- Oil leakage: Caused by aging, cracking, cutting or permanent compression deformation. Replace 72309 seal and check sealing groove.
- Pressure relief failure: Due to worn sealing surface or reduced seal elasticity. Replace with new seal directly.
- Abnormal wear: Caused by burrs, impurities or eccentric assembly in sealing groove. Clean and reinstall.
- High-temperature hardening: Material deterioration caused by long-term high temperature. Replace with high-temperature resistant seal.
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