Regular cleaning/lubrication/inspection; avoid overload & extreme environments; store spare parts properly.

Retain evidence, submit application within warranty, pass supplier’s quality inspection, then process as per policy.

FKM for oil/high temp; VMQ for food-grade/low temp; PTFE for corrosion; NBR for ordinary conditions.

Check standard packaging/marks, verify unique traceability code, inspect fine appearance, buy from authorized channels.

Follow manual for wearing parts; adjust for working conditions, replace immediately when abnormal (noise, vibration).

Seal failure: wrong material/installation; hydraulic pump failure: oil contamination, overload, poor coaxiality.

Match with equipment model & working conditions (load, temperature), prioritize standard models, and ensure compatibility.

Seal failure: wrong material/installation; hydraulic pump failure: oil contamination, overload, poor coaxiality.