07010-00105 0701000105 HNBR PU FKM Graphite Infused PTFE Multi-Material Composite Oil Seal Kit for Bulldozer Hydraulic Accumulator Servicing

1. Quick Details of  seal 07010-00105:

2. 07010-00105  picture:

3. Service part number :

4. FAQ

Q: What clear color and structural visual differences allow maintenance technicians to quickly identify each precision component inside this hydraulic accumulator seal kit?
A: HNBR floating piston main seals are matte jet black with wide multi-lip integrated sealing structure, the contact lip surface undergoes precision nano mirror polishing without micro burrs or cyclic abrasion scratches. Circular PU pulsation buffer rings are pale apricot yellow with full circular closed shock absorption outline, visually distinguishable from concave, oval and wedge buffer rings used on pilot valves, gear pumps and single-action hydraulic cylinders. FKM thick static O-rings are dark maroon brown with thick uniform circular cross-section, no shrinkage or permanent deformation after months of static pressure storage. Graphite-infused PTFE wide anti-extrusion rings are light ash gray with evenly scattered fine graphite powder across the wide flat surface, easy to separate from off-white carbon-filled PTFE rings applied to narrow-gap pump and valve assemblies. The heavy-duty double-layer dust wiper ring is thick black with dual internal and external scraping lips, dedicated to blocking large mud clumps and ultra-fine silt particles from entering the accumulator cylinder’s external mounting gaps. Each heavy accessory is laser printed with clear hydraulic accumulator matching dimension marks on the surface for rapid sorting and matching during on-site heavy component assembly.

Q: What wide temperature range and long-cycle static high-pressure hydraulic working conditions can this four-material composite seal kit sustain for long-term stable continuous operation?
A: This integrated oil seal kit can steadily bear sustained long-term static working pressure up to 480 bar, and withstand repeated instantaneous peak impact pressure up to 540 bar without extrusion failure of heavy-duty sealing components. HNBR and PU components retain stable elastic recovery and cyclic sealing performance within -38°C ~ +122°C, fully adapting to sub-zero frozen mountain construction and long-term outdoor parking in winter. FKM thick O-rings can operate reliably within -26°C ~ +148°C, perfectly matching the high-temperature hydraulic oil storage state of non-stop full-load earthmoving in summer. Graphite-infused PTFE wide backup rings will not soften or deform under thousands of cyclic piston sliding friction and persistent high static temperature, maintaining consistent anti-leakage protective performance through all seasonal construction environments.

Q: What hidden high-pressure hydraulic system malfunctions and corresponding financial losses will customers face if they select low-grade inferior seal kits instead of this complete multi-material composite set?
A: Cheap inferior seal kits only utilize recycled low-grade ordinary NBR raw materials, without matching full circular PU pulsation buffer rings and graphite-infused PTFE wide anti-extrusion protective layers. After thousands of cyclic pressure pulsations and long-term static oil corrosion, the wide floating piston sealing lip will fatigue and wear rapidly, triggering internal hydraulic oil slow bypass and continuous external oil seepage of the hydraulic accumulator assembly. The bulldozer will exhibit insufficient instantaneous hydraulic power during blade lifting and emergency steering, obvious hydraulic pressure drop after short idle parking, large hydraulic vibration noise during frequent load switching and unstable blade floating balance. Worn large rubber and plastic debris will scratch the precision polished accumulator cylinder inner barrel and floating piston outer surface, requiring costly full replacement of integral metal accumulator pressure vessel components. Meanwhile, persistent slow oil seepage increases daily hydraulic oil consumption costs, and prolonged equipment shutdown will delay overall construction project schedules, bringing extra labor rental and operation loss expenses for customers.

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