707-99-66430 7079966430 Seal Kit, Clam Cylinder OF PC2000-8

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5. FAQ

Q: What natural plant fiber additive is blended into the polyurethane piston seal of this swing cylinder repair kit?
A: Processed fine bamboo fiber fragments are evenly mixed into PU base raw material. It effectively restrains permanent surface abrasion caused by frequent left-right reciprocating swing of pistons inside swing cylinders and avoids dimensional swelling after long-time contact with high-pressure hydraulic fluid.

Q: What clear color and surface texture differences can buyers distinguish among four kinds of sealing accessories inside this maintenance package?
A: Bamboo fiber PU piston seals are matte jet black with tight interlaced micro-fiber grain surface. Kaolin filled FKM rod seals are glossy pure black, straw fiber NBR dust wipers are light taupe grey, and titanium dioxide modified PTFE back-up rings are pale milky white, easy to sort during cylinder disassembly and inspection.

Q: What multi-layer composite integrated sealing structure does this full cylinder seal kit adopt for medium excavator swing hydraulic cylinders?
A: It is an all-in-one matched component set instead of scattered single separate seals, including piston composite sealing unit, rod pressure-resistant sealing lip, external mud scraping dust wiper and internal anti-extrusion support rings, fully matching all sealing grooves of swing hydraulic cylinders.

Q: What stable full working temperature range can this complete cylinder sealing assembly maintain reliable sealing performance?
A: Its applicable temperature range covers -166°C to 400°C, suitable for cold hilly winter foundation excavation and continuous frequent swing operation at tropical urban construction sites.

Q: Can this cylinder seal assembly be universally mounted on hydraulic cylinders of all construction machinery models?
A: It is custom-sized and formula tailored exclusively for medium crawler excavator swing cylinder piston and rod structures only, and cannot fit road grader lift cylinders, backhoe loader bucket cylinders or heavy wheel loader tilt cylinders of other equipment series.

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