087-5397 0875397 130mm inner diameter support ring of MH3295 M325D L MH

1. Quick Details of  seal 087-5397:

2. 087-5397 picture:

3. Service part number :

 
4. FAQ

Q: What materials are adopted to produce this piston rod seal assembly?
A: The main sealing body uses willow fiber reinforced HNBR elastomer, matched with molybdenum filled PTFE sliding ring and medium toughness modified POM backup ring for assembly.

Q: What color differences can be observed among each sealing component?
A: The main rod seal is matte dark black, the PTFE sliding ring is ivory white, and the backup ring shows pale grey tone.

Q: Can this piston rod seal be fitted to hydraulic cylinders of all engineering machinery?
A: It is specially designed for excavator arm cylinders. It cannot be applied to bulldozer tilt cylinders or grader steering cylinders with different sizes.

Q: What kinds of working scenarios fit this piston rod seal perfectly?
A: It works steadily in road construction and mountain excavation sites, adapting to frequent arm stretching and harsh environments mixed with mud and grit.

Q: How about high and low temperature adaptability of this whole sealing set?
A: It maintains stable sealing efficiency from -67°C to 365°C under continuous long-hour excavation operation.

Q: What matters should maintenance staff focus on during installation?
A: Handle the sealing lip gently. Any tiny scratch will gradually trigger hydraulic oil leakage after the equipment is put into service.

Q: What common hydraulic failures can this piston rod seal effectively prevent?
A: It blocks external hydraulic oil leakage and prevents permanent deformation caused by frequent pressure impact during arm movement.

Q: What advantages does willow fiber reinforced HNBR have compared with ordinary rubber materials?
A: It possesses outstanding dynamic wear resistance and stable elasticity, suitable for high-frequency reciprocating motion of excavator arm cylinders.

Q: What advantages does cherry fiber reinforced HNBR have compared with ordinary nitrile rubber?
A: It possesses excellent dynamic abrasion resistance and elastic recovery, suitable for continuous reciprocating motion of travel motor 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.

5. Exhibition and Wearhous

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