216-0009 2160009 138.4 mm inner diameter U-shaped cup seal of 385C 365B L 365B 385C L

1. Quick Details of  seal 216-0009:

2. 216-0009 picture:

3. Service part number :

 
4. FAQ

Q: What matters should we pay attention to during seal replacement?
A: Clean the inside of the cylinder thoroughly before installation. Impurities left inside will scratch the new seal and shorten its service life.

Q: What hydraulic failures can this piston rod seal effectively avoid in daily use?
A: It reduces external oil leakage caused by reciprocating friction and prevents permanent deformation under frequent hydraulic pressure changes.

Q: What unique characteristics does poplar fiber reinforced HNBR have compared with ordinary rubber materials?
A: It has excellent fatigue resistance under frequent swing movement and stable elasticity, ideal for continuous tilt action of loader buckets.

Q: Can this sealing assembly sustain long-time operation under fluctuating hydraulic pressure?
A: Absolutely. It can withstand repeated pressure variations when dumping materials and will not degrade rapidly under cyclic heavy loads.

Q: What matters should we pay attention to during seal replacement?
A: Clean the inside of the cylinder thoroughly before installation. Impurities left inside will scratch the new seal and shorten its service life.

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.

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