3P-2794 plastic seal ring for CAT wheel loader spare part

3P-2794 plastic seal ring for CAT wheel loader spare part Featured Image
  • 3P-2794 plastic seal ring for CAT wheel loader spare part
  • 3P-2794 plastic seal ring for CAT wheel loader spare part

Short Description:

Plastic seal ring for Caterpillar 980 series wheel loader, 825/826 compactor transmission clutch, inner lip PTFE seal ring, stabilizes clutch pressure and reduces internal oil leakage.

Product Detail

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description

Plastic seal ring is an inner dynamic seal installed on transmission clutch piston. It matches rotating clutch structure, isolates pressurized transmission oil, controls clutch oil pressure and reduces internal leakage to keep friction plate engagement stable. Wear, fracture, extrusion deformation and jamming of the seal ring will cause clutch slipping, slow shifting and low oil pressure, which accelerates friction plate burnout.

Part No.:3P-2794
Type: Plastic seal ring (inner lip piston seal ring)
Material: Engineering plastic (PTFE)
Structure: Split circular ring
Sealing Medium: Transmission hydraulic oil
Working Condition: Medium-high pressure, dynamic sealing for transmission clutch
Matching System: Transmission clutch assembly
Inner Diameter: 354.46 mm
Matching Part: 3P-2793 (outer seal ring)

Application Scenarios

Fits Caterpillar 980C/980F/980G/980H/980K/980L wheel loader, 825C/825G/825H, 826C/826G/826H compactor, 824C/824G wheel dozer, installed on inner seal groove of transmission clutch piston, often used together with 3P-2793.

Maintenance & Replacement Tips

Use brass or plastic pry tools during disassembly and assembly, avoid sharp tools to prevent scratch. Clean sludge, iron scraps and old seal residue in piston groove before installation. Do not stretch or twist the ring excessively. Check groove surface for scratches and burrs. Inspect matched outer seal ring and clutch friction plates together when replacing.

FAQ 

Q：Can I keep using it temporarily if the seal ring cracks?
A：Not recommended. Crack will cause rapid oil leakage and pressure drop, which may damage internal gears and bearings.

Q：Which direction should the split gap face during installation?
A：Keep the gap away from high-pressure oil impact, follow official assembly drawing, do not face oil inlet.

Q：Can ordinary O-ring replace this plastic seal ring?
A：No. They differ in structure, pressure resistance and wear resistance, replacement will lead to early failure.

Q：Why does the seal ring get crushed quickly after installation?
A：Excessive groove clearance, overpressure and insufficient chamfer /burrs on groove are the main causes.

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