333-8672 3338672 130 mm connecting rod diameter buffer seal of 355 365C L MH 385C L MH 374F L 374D

1. Quick Details of  seal 333-8672:

2. 333-8672 picture:

3. Service part number :

 
4. FAQ

Q: Can this piston rod seal be universally installed on hydraulic cylinders of various engineering equipment?
A: It is specially manufactured for excavator boom cylinders. It cannot adapt to loader tilt cylinders or bulldozer lift cylinders of different structural sizes.

Q: What construction working conditions are suitable for this hydraulic piston rod seal?
A: It fits mountain excavation, foundation pit development projects, coping with frequent boom lifting movements and mixed mud and gravel erosion.

Q: How is the temperature resistance performance of this complete sealing assembly?
A: It maintains stable sealing performance within -78°C to 373°C and works reliably under long-time high-load boom operation.

Q: What inspection work should operators carry out before installing this piston rod seal?
A: Check whether there are scratches or corrosion marks on the surface of the piston rod, surface damage will accelerate abrasion of the newly installed sealing lip.

Q: What common hydraulic malfunction can this piston rod seal effectively mitigate?
A: It reduces outward leakage of hydraulic oil and avoids permanent extrusion deformation caused by frequent pressure surges during lifting work.

Q: What core strengths does walnut shell fiber reinforced HNBR have compared with ordinary nitrile rubber?
A: It possesses outstanding impact resistance and elastic recovery capacity, suitable for repeated lifting and falling movement of excavator booms.

Q: Can this sealing assembly keep stable performance under continuously changing hydraulic pressure?
A: Yes. It can withstand alternating pressure generated during rock excavation and will not experience rapid aging under cyclic heavy loads.

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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