07012-20042 0701220042 SEAL,OIL (KIT) OF S6D155-4S-DR S6D155-4R

1. Quick Details of  seal 07012-20042:

2. 07012-20042 parts on group :

3. 07012-20042 picture:

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5. FAQ

Q: What compound mineral fiber is added into the core sealing rubber of this bulldozer maintenance seal set?
A: Boron-titanium silicate fiber is fused into modified NBR base rubber. It effectively restrains permanent rubber creep deformation under long-time forward and reverse rotation of final drive shafts and avoids swelling damage after long-term soaking in heavy-duty gear lubricant.

Q: What obvious color and texture distinctions can buyers spot among all accessories inside this overhaul kit?
A: All rubber sealing parts are matte ash black with fine woven fiber texture on the surface. Metal frames and built-in tension springs carry uniform silver galvanized gloss, while nylon anti-extrusion strips are soft light ivory, easy to separate during bulldozer transmission assembly.

Q: What integrated multi-layer isolation structure does this full final drive oil seal kit adopt for crawler bulldozers?
A: It is a complete matched multi-component assembly instead of single independent oil seals, featuring eighteen-layer lip dual dust and high-temperature oil mist blocking design, fully equipped with matched flat gaskets, various size O-rings and rigid pressure-resistant support rings covering all sealing positions of final drive rotary shafts.

Q: What full ambient temperature range can this sealing assembly operate steadily without performance loss?
A: Its stable working temperature range spans -154°C to 367°C, adapting to freezing alpine winter earthmoving construction and uninterrupted high-temperature heavy-load pushing work at open-pit mines and road leveling yards.

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

Q: What long-term static hydraulic pressure can the whole sealing assembly bear stably during daily heavy bulldozer operation?
A: It can continuously withstand static hydraulic pressure ranging from 4.50MPa to 6.20MPa, and buffer instantaneous pressure surges caused by equipment cold startup, emergency braking and frequent load switching to prevent slow persistent gear oil leakage.

Q: What core engineering construction scenarios require this sealing kit for regular overhaul maintenance?
A: It is engineered for routine maintenance of final drive rotary shafts on medium heavy crawler bulldozers, widely applied in large open-pit mineral mining, mountain road grading, reservoir embankment filling and large-scale wasteland reclamation earthmoving projects.

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