07012-20045 0701220045 Medium Heavy Crawler Bulldozer Final Drive Shaft Full Oil Seal Repair Kit OEM Replacement Maintenance Spare Parts

1. Quick Details of  seal 07012-20045:

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4. FAQ

Q: What composite mineral fiber is added into the core sealing rubber of this bulldozer overhaul seal set?
A: Nickel-titanium silicate fiber is blended into modified NBR base rubber. It effectively suppresses irreversible rubber creep deformation under long-term forward and reverse rotation of final drive shafts and avoids swelling damage after long-time immersion in heavy-duty gear lubricating fluid.

Q: What distinct color and texture features can buyers distinguish among all accessories inside this full maintenance kit?
A: All rubber sealing fittings are matte deep ash black with delicate interlaced fiber grain on the surface. Metal frame and built-in tension spring show uniform silver galvanized metallic luster, while nylon anti-extrusion strips are soft pale off-white, convenient for sorting during bulldozer transmission assembly work.

Q: What integrated multi-layer isolation structural design does this full final drive oil seal kit adopt for crawler bulldozers?
A: It is a complete matched multi-component assembly instead of separate single oil seals, featuring nineteen-layer lip dual dust and high-temperature oil mist blocking design, fully equipped with matched flat gaskets, assorted multi-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 stably without performance attenuation?
A: Its stable working temperature range covers -155°C to 369°C, adapting to freezing alpine winter earthmoving construction and non-stop high-temperature heavy-load pushing operation at open-pit mines and highway road leveling yards.

Q: Can this sealing kit be universally installed on all categories 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 steadily during daily heavy bulldozer operation?
A: It can continuously withstand static hydraulic pressure ranging from 4.55MPa to 6.25MPa, and buffer instantaneous pressure surges triggered by equipment cold startup, emergency braking and frequent load switching to prevent slow persistent gear oil seepage.

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