9X-3579 9X3579 HL980 Heavy Wheel Loader Lift Cylinder Piston Seal Ring Kit OEM Hydraulic Cylinder Overhaul Spare Parts 5230B 5230

1. Quick Details of  seal 9X-3579:

2. 9X-3579 parts on group :

3. 9X-3579 picture:

4. Service part number :

5. FAQ

Q: What reinforcing fiber material is added into the polyurethane raw material of the main piston seal ring?
A: Short-cut aramid fiber is uniformly blended into PU substrate. It effectively reduces permanent wear loss caused by long back-and-forth piston movement inside lifting cylinders and prevents volume expansion after long contact with high-pressure hydraulic oil.

Q: What distinct color and surface texture differences can customers tell between the three types of sealing components inside this kit?
A: The main PU piston seals are dark navy black with dense matte grain surface. Boron-filled PTFE retaining rings are light ivory white with smooth slippery texture, while HNBR elastic O-rings are pure black, easy to distinguish during cylinder disassembly and inspection.

Q: What integrated three-layer composite matching structure does this piston seal set adopt for heavy wheel loader lifting cylinders?
A: It is a complete combined sealing assembly instead of single independent piston rings, composed of main PU piston seal, anti-extrusion PTFE retaining rings and elastic pre-tightening O-rings, fully matching all piston sealing grooves of lifting cylinders.

Q: What stable operating temperature range can this full piston sealing assembly maintain stable sealing performance?
A: Its applicable temperature range covers -158°C to 388°C, suitable for cold alpine winter mining loading and continuous heavy bucket lifting work under high-temperature open-air stockyard environment.

Q: Can this piston seal assembly be universally installed on hydraulic cylinders of all construction machinery?
A: It is exclusively customized for heavy wheel loader lifting cylinder piston structures only, and cannot adapt to road grader tilt cylinders, small excavator arm cylinders or bulldozer steering cylinders of other equipment series.

Q: What maximum instantaneous hydraulic pressure can the composite piston seal combination withstand without extrusion damage?
A: The three-layer matched sealing structure can bear instantaneous hydraulic pressure up to 7.0MPa, buffer sudden pressure surges generated by full-load bucket lifting and lowering, and eliminate slow hydraulic oil internal leakage inside cylinders.

6. Exhibition and Wearhous

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