707-99-32140 7079932140 SERVICE KIT OF WA450-3 WA470-3

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5. FAQ

Q: What kind of hydraulic pressure can these sealing components withstand steadily?
A: It can adapt to frequent pressure changes under normal construction working conditions.

Q: Does this set contain all inner parts for one cylinder overhaul?
A: Yes, it includes main seals, buffer seals, dust wiper, back‑up rings and O‑rings for full cylinder rebuild.

Q: What is the main function of PTFE components inside this kit?
A: PTFE parts reduce friction, resist extrusion and extend service life under continuous hydraulic pressure.

Q: Do we need extra gaskets when installing this seal kit?
A: Normally no extra gaskets are required, all matching sealing pieces are already included in one set.

Q: What storage suggestions should we follow for spare seal kits?
A: Keep them in cool and dim warehouse, avoid squeezing, sharp scratches and long‑time direct sunlight.

Q: What installation points should field maintenance mechanics keep in mind?
A: Avoid sharp edges of cylinder gland scratching sealing surfaces; never twist or over‑bend any sealing piece in assembly procedure.

Q: Can the sealing combination stop internal leakage and external oil seepage effectively?
A: Multi-stage sealing structure greatly reduces the risk of hydraulic oil leakage.

Q: Can this product prevent hydraulic oil leakage effectively?
A: The precise size design effectively reduces internal leakage and external oil seepage.

Q: What construction scenarios often require this arm cylinder seal kit for regular maintenance?
A: It is widely used for maintaining mini excavators working on villa foundation projects, landscape engineering, pipeline trenching and rural road reconstruction.

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