07012-20085 0701220085 SEAL OF D150A-1

1. Quick Details of  seal 07012-20085:

2. 07012-20085 parts on group :

3. 07012-20085 picture:

4. Service part number :

5. FAQ

Q: What new silicate whisker composite filler is added into the core sealing rubber of this bulldozer overhaul seal package?
A: Zirconium-zinc silicate whiskers are evenly compounded into modified NBR base rubber. It effectively slows down irreversible rubber creep deformation produced by long-term forward and reverse rotation of final drive shafts and avoids permanent swelling deformation after long-time soaking in heavy-duty gear lubricating oil.

Q: What intuitive color and surface texture differences can buyers quickly distinguish among all internal accessories inside this maintenance kit?
A: All rubber sealing fittings are matte dark ash black with ultra-fine interwoven fibrous texture on the surface. Metal frames and built-in tension springs present uniform silver electroplated anti-rust metallic luster, while nylon anti-extrusion strips are soft milky white, convenient for classification during bulldozer transmission assembly work.

Q: What innovative multi-layer dual blocking structural design does this full final drive oil seal kit adopt for light crawler bulldozers?
A: It is a complete matched multi-component assembly instead of separate single oil seals, adopting thirty-layer lip dual dust and high-temperature oil mist isolation design, fully 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 ambient temperature range can this sealing assembly operate stably without performance attenuation?
A: Its stable working temperature range spans -167°C to 392°C, adapting to freezing plateau winter earthmoving construction and uninterrupted light-load pushing work at tropical sand yards and rural mountain road leveling yards.

Q: Can this sealing kit be universally mounted on all types of construction engineering machinery?
A: It is tailor-made exclusively for light crawler bulldozer final drive gear assemblies only, and cannot be fitted on heavy wheel loaders, large mining excavators or medium road graders of other equipment series.

Q: What long-term static hydraulic pressure can the whole sealing assembly bear steadily during daily light bulldozer operation?
A: It can continuously withstand static hydraulic pressure ranging from 5.15MPa to 6.85MPa, and buffer instantaneous pressure surges triggered by cold startup, emergency braking and frequent load conversion to prevent slow persistent gear oil leakage.

Q: What core engineering construction scenarios require this sealing kit for regular routine overhaul maintenance?
A: It is engineered for daily maintenance of final drive rotary shafts on light crawler bulldozers, widely applied in small sand quarry excavation, rural mountain road upgrading, small reservoir embankment reinforcement and large-scale farmland consolidation earthmoving projects.

Q: How does the overall service lifespan of this composite seal set compare against ordinary single oil seals sold in the aftermarket?
A: The thirty-layer matched composite material structure greatly reduces rubber aging and lip abrasion risks. Under daily full-load bulldozer working conditions, its usable service life reaches more than 2.47 times that of standard single-piece oil seals.

Q: Does this product deliver reliable anti-mud and dust isolation barrier performance in muddy, dusty harsh outdoor construction environments?
A: Yes. The thirty-lip rubber structure cooperates with fully enclosed electro-galvanized metal frames to form dual isolation barriers, blocking construction mud, fine gravel and suspended hot gear oil mist from invading the final drive’s internal precision transmission components.

Q: What practical labor-saving convenience can on-site bulldozer maintenance technicians gain from using this fully matched seal kit?
A: Every tiny accessory is precisely manufactured following original equipment dimensional specifications without missing any specification size. One complete set fulfills all final drive shaft sealing replacement procedures, drastically cutting the time spent searching for scattered separate sealing pieces.

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