170-9851 1709851 139 mm inner diameter buffer seal of 365C 385B 385C 365B

1. Quick Details of  seal 170-9851:

2. 170-9851 picture:

3. Service part number :

 
4. FAQ

Q: What materials compose this piston rod seal assembly?
A: The main sealing body adopts elm fiber reinforced HNBR elastomer, equipped with titanium filled PTFE sliding ring and high tenacity modified POM backup ring for matched assembly.

Q: What color presentation can we observe on each component?
A: The primary rod seal is matte charcoal black, the PTFE sliding ring is ivory white, and the anti-extrusion backup ring shows light silver grey.

Q: Can this piston rod seal be mounted on hydraulic cylinders of all construction machinery?
A: It is specially designed for excavator swing motor cylinders. It cannot be used on grader tilt cylinders or wheel loader lift cylinders with different structural dimensions.

Q: What construction environments are suitable for this piston rod seal?
A: It performs steadily at urban construction sites and stone mining yards, adapting to frequent left-right rotary movement and mixed dust and mud conditions.

Q: How is the high and low temperature adaptability of this sealing set?
A: It maintains stable sealing performance within -74°C ~ 367°C under long-term continuous rotary operation of excavators.

Q: What points should maintenance staff pay attention to during installation?
A: Remove all metal burrs inside the cylinder completely. Hard impurities will continuously scratch the sealing lip and shorten service life greatly.

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.

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