707-99-73140 7079973140 SERVICE KIT,DUMP CYLINDER OF WA400-3A WA470-DZ-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 one kit include all sealing pieces required for one cylinder overhaul?
A: Yes, it covers piston seals, rod seals, wiper seals, backup rings and full set of O‑rings.

Q: What is the advantage of PU components in this kit?
A: PU parts deliver strong extrusion resistance and improve service life under heavy‑load shock pressure.

Q: What temperature range can these sealing parts work within?
A: Stable performance from ‑30℃ to 105℃ under regular hydraulic oil operating conditions.

Q: Should I prepare extra spare seals before installation?
A: Extra spare parts are not necessary for one cylinder rebuild, all matched components are already packed.

Q: How should we store these seal kits for long‑term stock?
A: Keep in cool dim storage area, avoid heavy compression, sharp cuts and direct sunlight exposure.

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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