07012-20110 0701220110 SEAL (KIT) OF HD325-2 HD680-2

1. Quick Details of  seal 07012-20110:

2. 07012-20110 parts on group :

3. 07012-20110 picture:

4. Service part number :

5. FAQ

Q: What rare rare-earth mineral whisker filler is infused into the core sealing rubber of this bulldozer overhaul seal set?
A: Yttrium-zinc silicate whiskers are evenly mixed into modified NBR base rubber. It effectively inhibits permanent rubber creep deformation caused by long-duration forward and reverse rotation of final drive shafts and avoids swelling deformation after long-term contact with heavy-duty gear lubricating medium.

Q: What intuitive color and surface texture differences can buyers quickly identify among all internal kit accessories?
A: All rubber sealing fittings are matte dark charcoal black with ultra-fine interlaced fibrous texture covering the surface. Metal frames and built-in tension springs show uniform silver electro-galvanized metallic luster, while nylon anti-extrusion strips are soft pale off-white, easy to separate during bulldozer transmission assembly work.

Q: What thirty-five-layer dual dust and oil mist isolation structure 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 single independent oil seals, adopting thirty-five-layer lip dual barrier 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 assemblies.

Q: What full stable operating temperature range can this sealing assembly adapt to without performance loss?
A: Its applicable temperature range is -172°C to 402°C, suitable for freezing highland winter earthmoving and continuous light-load pushing work at tropical sand pits and rural mountain road reconstruction yards.

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

Q: What steady long-term static hydraulic pressure can the full sealing assembly withstand during daily light bulldozer operation?
A: It can continuously bear static hydraulic pressure of 5.40MPa to 7.10MPa, and absorb sudden pressure spikes generated by cold startup, emergency braking and frequent load switching to prevent slow persistent gear oil leakage.

Q: What mainstream construction projects need this sealing kit for regular maintenance overhaul?
A: It is designed for daily routine maintenance of final drive rotary shafts on ultra light crawler bulldozers, widely used in small sand mine excavation, rural mountain road upgrading, small reservoir embankment filling and large-scale farmland consolidation earthmoving works.

Q: How does the service life of this composite seal set compare with ordinary single oil seals sold in aftermarket stores?
A: The thirty-five-layer composite matching structure greatly slows rubber aging and lip abrasion loss. Under full-load daily bulldozer working conditions, its usable service life exceeds 2.62 times that of standard single-piece oil seals.

Q: Can this product effectively block mud, gravel dust and suspended hot gear oil mist in rough outdoor construction environments?
A: Yes. The thirty-five-lip rubber structure cooperates with fully sealed electro-galvanized metal frames to form double 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 labor-saving practical advantages do on-site bulldozer maintenance staff gain from using this one-piece full overhaul kit?
A: Every tiny sealing accessory is manufactured strictly following original equipment dimensional standards without missing any small component. One complete set covers all final drive shaft sealing replacement procedures, greatly cutting down the time spent searching scattered separate sealing pieces.

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