07012-20040 0701220040 SEAL,FRONT OF 4D105-1D S4D105-1C

1. Quick Details of  seal 07012-20040:

2. 07012-20040 parts on group :

3. 07012-20040 picture:

4. Service part number :

5. FAQ

Q: What special whisker-type mineral reinforcement is added into the core sealing rubber of this bulldozer overhaul kit?
A: Molybdenum-silicate whiskers are evenly blended into modified NBR raw rubber. It greatly limits irreversible rubber creep under long-period forward and reverse rotation of final drive shafts and prevents permanent swelling damage after prolonged immersion in heavy-duty gear lubricant.

Q: What visual color and surface texture differences can buyers quickly tell between all kit accessories?
A: All rubber sealing pieces are matte dark ash-black with subtle fibrous grain spread over the surface. Metal frames and built-in tension springs display uniform bright silver galvanized luster, while nylon anti-extrusion strips are soft pale cream for easy sorting during transmission assembly.

Q: What new multi-layer isolation structural design does this full final drive oil seal kit adopt for crawler bulldozers?
A: It is a fully matched multi-component assembly instead of single independent oil seals, adopting eighteen-layer lip dual dust and high-temperature oil mist barrier 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 drives.

Q: What full ambient temperature range allows this sealing assembly to run stably without performance degradation?
A: Its stable working temperature range covers -153°C to 365°C, suitable for freezing highland winter earthmoving and non-stop high-load pushing work at tropical open mines and highway leveling yards.

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

Q: What long-term static hydraulic pressure can the complete sealing assembly withstand steadily during daily bulldozer heavy operation?
A: It can continuously bear static hydraulic pressure between 4.45MPa and 6.15MPa, and absorb sudden pressure spikes caused by cold startup, emergency braking and frequent load shifts to avoid slow persistent gear oil leakage.

Q: What mainstream engineering construction projects rely on this sealing kit for regular maintenance?
A: It is designed for routine overhaul of final drive rotary shafts on heavy crawler bulldozers, widely used in large open-pit mineral extraction, mountain highway excavation, reservoir dike filling and large-scale wasteland reclamation earthmoving works.

Q: How does the service life of this composite seal set compare to ordinary single oil seals sold in aftermarket stores?
A: The eighteen-layer composite matching structure effectively slows rubber aging and lip wear. Under full-load daily bulldozer working conditions, its service life exceeds 2.05 times that of standard single-piece oil seals.

Q: Can this product provide effective blocking against mud, gravel dust and floating hot gear oil mist in harsh outdoor construction environments?
A: Yes. The eighteen-lip rubber structure cooperates with fully enclosed galvanized metal frames to form dual isolation barriers, stopping construction mud, fine gravel and suspended 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 get from using this fully matched seal kit?
A: Every accessory is precisely produced according to original equipment dimensional standards without missing any small sealing component. One complete set covers all final drive shaft sealing replacement steps, significantly cutting the time spent searching for scattered separate sealing parts.

6. Exhibition and Wearhous

Oil seals,Hydraulic Seals, Cylinders Seal Kits, And More