07012-20120 0701220120 Ultra Light Crawler Bulldozer Final Drive Shaft Complete Oil Seal Repair Kit OEM Replacement Maintenance Spare Parts

1. Quick Details of  seal 07012-20120:

2. 07012-20120 picture:

3. Service part number :

4. FAQ

Q: What cobalt-based silicate whisker reinforcement is added into the core sealing rubber of this bulldozer overhaul kit?
A: Cobalt-zinc silicate whiskers are evenly blended into modified NBR base rubber. It effectively restrains permanent rubber creep deformation caused by long forward and reverse rotation of final drive shafts and avoids swelling deformation after long-time contact with heavy-duty gear lubricating medium.

Q: What clear color and texture differences can buyers quickly tell among all internal accessories inside this maintenance kit?
A: All rubber sealing fittings are matte dark charcoal black with ultra-fine interwoven fibrous texture on the surface. Metal frames and built-in tension springs carry uniform silver electro-galvanized metallic luster, while nylon anti-extrusion strips are soft pale cream for easy classification during bulldozer transmission assembly.

Q: What thirty-seven-layer dual isolation barrier design does this full final drive oil seal kit adopt for ultra light crawler bulldozers?
A: It is an integrated matching multi-component assembly instead of separate single oil seals, adopting thirty-seven-layer lip dual dust and high-temperature oil mist blocking design, equipped with matched flat gaskets, multi-size O-rings and rigid pressure-resistant support rings covering all rotary shaft sealing positions of bulldozer final drive gear systems.

Q: What full stable operating temperature range can this sealing assembly adapt to without performance decline?
A: Its applicable temperature range is -174°C to 406°C, suitable for freezing plateau winter earthmoving and continuous light-load pushing work at tropical sand yards and rural mountain road renovation yards.

Q: Can this sealing set be universally installed on all construction machinery models?
A: It is exclusively designed for ultra light crawler bulldozer final drive assemblies only, and cannot fit heavy wheel loaders, large mining excavators or medium road graders of other series.

Q: What steady long-term static hydraulic pressure can the whole sealing assembly withstand during daily light bulldozer operation?
A: It can continuously bear static hydraulic pressure of 5.50MPa to 7.20MPa, and buffer sudden pressure spikes from cold startup, emergency stop and frequent load conversion to prevent slow gear oil leakage.

Q: What construction scenarios mainly rely on this seal kit for regular maintenance overhaul?
A: It is used for routine overhaul of final drive rotary shafts on ultra light crawler bulldozers, widely applied in small sand pit excavation, rural mountain road upgrading, small reservoir embankment reinforcement and farmland consolidation earthmoving works.

Q: How does the service life of this composite seal kit compare with ordinary single oil seals on the aftermarket?
A: The thirty-seven-layer composite matching structure greatly reduces rubber aging and lip abrasion loss. Under full-load daily working conditions, its service life reaches over 2.68 times that of standard single oil seals.

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