07012-21070 0701221070 SEAL OF GD37-6H GD37-5H

1. Quick Details of  seal 07012-21070:

2. 07012-21070 parts on group :

3. 07012-21070 picture:

4. Service part number :

5. FAQ

Q: What titanium-alumina composite mineral whisker additive is blended into the core HNBR sealing rubber of this travel motor overhaul kit?
A: Ultra-fine titanium-alumina silicate whiskers are evenly fused into modified HNBR base rubber. It effectively suppresses irreversible rubber creep deformation caused by long-hour positive and negative rotation of travel motor shafts and avoids permanent swelling damage after prolonged contact with heavy-duty drive gear lubricating oil.

Q: What clear color and surface texture differences can buyers quickly distinguish among all internal accessories inside this maintenance package?
A: All HNBR rubber sealing fittings are matte charcoal black with delicate interwoven micro-fiber grain covering the surface. Metal frames and built-in tension springs present uniform silvery nickel-plated metallic luster, while nylon anti-extrusion strips are soft pale beige for easy classification during travel motor disassembly.

Q: What forty-eight-layer dual dust and high-temperature oil mist isolation structural design does this full travel motor oil seal kit adopt for medium crawler bulldozers?
A: It is an integrated full matching multi-component assembly rather than scattered single oil seals, adopting forty-eight-layer lip dual barrier blocking 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 travel motor gear assemblies.

Q: What full stable operating temperature range allows this sealing assembly to run continuously without performance attenuation?
A: Its applicable temperature range spans -185°C to 428°C, suitable for freezing plateau winter large-scale earthmoving construction and uninterrupted medium-heavy load pushing operation at tropical sand mines and highway mountain road leveling yards.

Q: Can this oil seal kit be universally installed on drive systems of all types of construction engineering machinery?
A: It is tailor-made exclusively for medium crawler bulldozer travel motor gear systems only, and cannot match heavy wheel loader drive axles, large mining excavator swing motors or heavy-duty road grader hydraulic drive assemblies of other equipment series.

Q: What long-term static hydraulic pressure can the whole sealing assembly withstand steadily during daily medium bulldozer traveling operation?
A: It can continuously bear static hydraulic pressure ranging from 6.05MPa to 6.95MPa, and buffer instantaneous pressure surges triggered by frequent forward/reverse traveling, emergency braking and variable load conversion to eliminate slow persistent gear oil seepage.

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