07010-00028 0701000028 Multi-Material Composite Oil Seal Kit for Bulldozer Blade Lift & Tilt Cylinder Maintenance GD37-4 GD37-5H

1. Quick Details of  seal 07010-00028:

2. 07010-00028  parts on group :

3. 07010-00028  picture:

4. Service part number :

5. FAQ

Q: Which bulldozer equipment and hydraulic cylinders does this 07010-00028 seal kit fit, and what sealing accessories are included inside the set?
A: This full oil seal kit matches mainstream heavy crawler bulldozers, applicable to blade lift cylinder, tilt cylinder and steering hydraulic cylinder of the machine. It is a complete overhaul package containing rod oil seal, piston seal, PU buffer ring, PTFE anti-extrusion ring, FKM high-temperature O-rings, dust wiper and matched small gaskets. Maintenance staff do not need to buy scattered seals separately during cylinder disassembly, greatly improving maintenance efficiency on construction sites.

Q: What unique practical advantages does the four-material collocation bring to bulldozer hydraulic cylinder sealing?
A: Bulldozers operate on rugged ground all year round, bearing heavy impact loads, continuous long-time vibration and obvious temperature changes between cold winter and hot summer. NBR main seals balance oil resistance and elastic recovery to cope with daily conventional hydraulic sealing. PU buffer rings absorb instantaneous hydraulic pressure spikes to avoid direct impact damage to core sealing lips. FKM O-rings resist high temperature and oil aging, suitable for non-stop full-load operation. PTFE flat rings reduce friction between metal parts and prevent seals from being squeezed and cracked under peak pressure, forming multi-layer protective structure to extend overall service life.

Q: What color and structural appearance features do each component of this seal kit have?
A: NBR main oil seals are solid black with double-lip U-shaped structure and smooth sealing surface. PU buffer rings are light orange with special tapered shock-absorbing outline. FKM O-rings are coffee brown with uniform round cross-section without deformation. Milky white PTFE back-up rings are thin flat rings with burr-free edges. The dust wiper is black with an outward dust-blocking lip. Every part has standard unified sizes, which can be quickly sorted and identified during on-site assembly.

Q: What stable working pressure and temperature range can this whole set of seals withstand?
A: This composite seal kit can continuously bear stable working pressure up to 400 bar. NBR and PU components work normally within -34°C ~ +120°C, while FKM O-rings can adapt to -25°C ~ +140°C. It can maintain stable sealing performance in low-temperature mountain construction in winter and long-hour full-load earthmoving work in summer, without swelling, hardening, cracking or internal and external oil leakage.

Q: What hidden equipment faults and economic losses will low-quality seal kits trigger for bulldozer hydraulic systems?
A: Cheap inferior seal kits adopt recycled waste rubber without PU buffer and PTFE anti-extrusion protection layers. They wear rapidly under frequent impact and vibration, leading to serious internal and external oil leakage of hydraulic cylinders. The bulldozer will show weak lifting force, slow steering response and obvious jitter during operation. Worn rubber debris will scratch the piston rod and cylinder inner wall, resulting in expensive metal part replacement costs, and long equipment shutdown will delay construction progress and cause extra operation losses.

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