367-3961 3673961 148.4 mm inner diameter U-shaped cup seal of MH 365C 385B 385C

1. Quick Details of  seal 367-3961:

2. 367-3961 picture:

3. Service part number :

 
4. FAQ

Q: Can this piston rod seal fit hydraulic cylinders of all construction machines?
A: It is specially designed for excavator travel cylinders. It cannot be applied to grader steering cylinders or loader bucket cylinders with different dimensions.

Q: What kinds of working environments suit this hydraulic piston rod seal?
A: It is applicable to muddy mine roads and transit construction sites, coping with frequent start-stop reciprocating movement and sediment erosion.

Q: How is the temperature resistance performance of this sealing assembly?
A: It works steadily within -77°C to 372°C and maintains reliable sealing performance under long-distance continuous travelling operation.

Q: Are there any installation suggestions when replacing this piston rod seal?
A: It is better to inspect the piston rod surface for scratches. Damaged rod surface will shorten the service life of the new seal rapidly.

Q: What common failure issues can this piston rod seal effectively avoid?
A: It can effectively restrain outer hydraulic oil leakage and resist permanent extrusion deformation under unstable travelling pressure.

Q: What core construction projects require this rod seal kit for routine hydraulic cylinder maintenance?
A: It is developed for daily overhaul of bucket cylinder piston rod assemblies on medium crawler excavators, widely applied in residential foundation excavation, small river dredging, landscape earth shaping and rural road expansion projects.

Q: How does the service lifespan of carbon nanotube modified PU rod seals compare with standard unmodified polyurethane rod seals?
A: The carbon nanotube doping formula greatly upgrades surface wear resistance and high-pressure stability. Under daily full-load digging operation, its service cycle reaches 2.7 times that of ordinary single PU piston rod seals.

Q: How well can this sealing set block construction mud, rock dust and suspended hot hydraulic oil mist in muddy outdoor excavation working conditions?
A: The outer NBR dust wiper intercepts large sediment particles, while the inner PU main seal isolates hot oil mist inside the cylinder, and wear-resistant PTFE rings avoid scratch damage from fine grit mixed in hydraulic oil.

Q: What practical efficiency benefits can on-site excavator maintenance staff gain from using this fully pre-matched rod seal kit?
A: All supporting sealing accessories required for rod overhaul are pre-assembled into one complete set without separate procurement. Technicians do not need to carry scattered loose seals or repeatedly measure rod groove dimensions on site, greatly shortening cylinder repair time.

5. Exhibition and Wearhous

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