07012-20080 0701220080 SEAL OF D80A-12

1. Quick Details of  seal 07012-20080:

2. 07012-20080 parts on group :

3. 07012-20080 picture:

4. Service part number :

5. FAQ

Q: What new composite silicate whisker filler is blended into the core sealing rubber of this bulldozer overhaul set?
A: Tungsten-zinc silicate whiskers are evenly mixed into modified NBR base rubber. It effectively inhibits irreversible rubber creep deformation under long continuous forward and reverse rotation of final drive shafts and avoids permanent swelling after long contact with heavy-duty gear lubricant.

Q: What visual color and surface texture differences can buyers easily tell among all kit accessories?
A: All rubber sealing parts are matte dark ash black with fine interwoven fibrous texture on the surface. Metal frames and built-in tension springs show uniform silver galvanized metallic luster, while nylon anti-extrusion strips are soft pale cream, convenient for classification during bulldozer transmission assembly.

Q: What integrated multi-layer dual barrier structural design does this full final drive oil seal kit adopt for light medium crawler bulldozers?
A: It is a full matched multi-component assembly instead of single independent oil seals, adopting twenty-nine-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 drop?
A: Its stable working temperature range covers -166°C to 390°C, suitable for freezing plateau winter earthmoving and continuous light-load pushing work at tropical sand yards and rural road leveling yards.

Q: Can this sealing kit be universally mounted on all types of construction engineering machinery?
A: It is specially customized only for light medium crawler bulldozer final drive assemblies, unable to fit 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 5.10MPa to 6.80MPa, and buffer sudden pressure spikes caused by cold startup, emergency braking and frequent load switching to prevent slow persistent gear oil leakage.

Q: What core engineering construction scenarios rely on this sealing kit for regular maintenance overhaul?
A: It is designed for daily routine maintenance of final drive rotary shafts on light medium crawler bulldozers, widely applied in small sand mine excavation, rural mountain road reconstruction, small reservoir embankment filling and farmland consolidation earthmoving projects.

Q: How does the service life of this composite seal set compare with ordinary single oil seals sold in aftermarket stores?
A: The twenty-nine-layer composite matching structure greatly slows rubber aging and lip abrasion loss. Under daily full-load bulldozer working conditions, its usable service life exceeds 2.44 times that of standard single-piece oil seals.

Q: Can this product effectively block mud, gravel dust and suspended hot gear oil mist in harsh outdoor construction environments?
A: Yes. The twenty-nine-lip rubber structure cooperates with fully enclosed galvanized metal frames to form dual isolation barriers, stopping construction mud, fine gravel and floating high-temperature oil mist from entering the precision transmission components inside the final drive.

Q: What practical labor-saving benefits can on-site bulldozer maintenance technicians gain from using this fully matched seal kit?
A: Every accessory is precisely produced according to original equipment dimensional standards without missing any tiny sealing component. One complete set covers all final drive shaft sealing replacement steps, significantly cutting the time spent searching for scattered separate sealing pieces.

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