707-51-90110 7075190110 U-PACKING,ROD of D75S-5 D80P-18

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5. FAQ

Q: What raw material makes up the primary sealing body of this piston rod seal?
A: The main sealing component adopts pine fiber reinforced HNBR elastomer, matched with niobium filled PTFE wear ring and POM backup ring for assembly.

Q: What color characteristics do each component of this sealing assembly show?
A: The main rod seal is matte jet black, the PTFE wear-resistant ring is ivory white, and the backup ring presents light silver grey.

Q: Could this piston rod seal be mounted on hydraulic cylinders of all construction machinery?
A: It is specially developed for excavator boom cylinders. It cannot be fitted on wheel loader tilt cylinders or bulldozer push cylinders with different dimensions.

Q: What kinds of construction operation sites fit this hydraulic piston rod seal?
A: It performs well in foundation excavation and highway construction sites, coping with frequent boom lifting movements and muddy, dusty working surroundings.

Q: How about high and low temperature resistance of this whole set of sealing parts?
A: It keeps stable working performance within -74°C to 368°C and maintains reliable sealing effect under long-term cyclic heavy-load lifting work.

Q: What key matters should be noted during the seal replacement operation?
A: Fully clean metal burrs and dirt inside the cylinder before installation. Hard impurities will scratch the sealing lip and shorten service life sharply.

Q: What hydraulic failures can this piston rod seal effectively restrain during daily operation?
A: It reduces outward hydraulic oil leakage and prevents permanent extrusion deformation caused by unstable pressure during boom lifting and lowering.

Q: What outstanding advantages does pine fiber reinforced HNBR own compared with ordinary rubber materials?
A: It features great dynamic fatigue resistance and stable elasticity, adapting continuously to repeated reciprocating motion 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.

6. Exhibition and Wearhous

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