147-5771 1475771 140mm inner diameter hydraulic cylinder support ring of 385B 374F L 385C 374D L 365B

1. Quick Details of  seal 147-5771:

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4. FAQ

Q: Can this piston rod seal be mounted to hydraulic cylinders of all construction machinery?
A: It is specially manufactured for grader tilt cylinders. It cannot fit excavator stick cylinders or wheel loader steering cylinders of different structural sizes.

Q: Which construction environments are suitable for this hydraulic sealing component?
A: It operates reliably in road reconstruction and highway maintenance sites, adapting to frequent angle adjustment and dusty outdoor operating conditions.

Q: How is high and low temperature resistance of this whole sealing set?
A: It maintains stable sealing efficiency from -63°C to 361°C under long-time continuous road leveling operations.

Q: What installation points should maintenance staff pay attention to?
A: Remove all tiny metal burrs on the piston rod surface. Hard protrusions will gradually abrade the sealing lip during reciprocating movement.

Q: What typical hydraulic faults can this piston rod seal effectively avoid?
A: It prevents external hydraulic oil leakage and avoids permanent extrusion deformation caused by sudden pressure fluctuations during angle adjustment.

Q: What typical hydraulic issues can this piston rod seal effectively reduce during operation?
A: It prevents outward leakage of hydraulic oil and avoids extrusion damage caused by instantaneous pressure spikes when the stick stretches and retracts.

Q: What core performance strengths does pine fiber reinforced FKM have compared with regular sealing rubber?
A: It features excellent resistance to hydraulic fluid corrosion and anti-fatigue property, matching frequent reciprocating motion of excavator stick cylinders.

Q: What unique advantages does apricot fiber reinforced FKM have compared with traditional sealing rubber?
A: It delivers excellent oil corrosion resistance and thermal stability, perfectly adapting to high-frequency movement of excavator boom cylinders.

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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