07010-00150 0701000150 HNBR PU FKM Graphite Infused PTFE Multi-Material Composite Oil Seal Kit for Bulldozer Accumulator Charging Valve Complete Servicing

1. Quick Details of  seal 07010-00150:

2. 07010-00150  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 accumulator charging valve seal kit?
A: HNBR charging shuttle spool and balance piston main seals are matte jet black with multi-lip labyrinth micro sealing structure, the contact lip surface undergoes nano mirror precision polishing without micro burrs or static-pulse alternating cyclic abrasion scratches. Narrow arc PU charging pulse buffer rings are pale apricot yellow with exclusive slim arc shock absorption outline, visually distinguishable from straight trapezoidal, rectangular and circular PU buffer rings used on anti-cavitation valves, sequence valves and main hydraulic cylinders. FKM micro static O-rings are dark maroon brown with uniform miniature circular cross-section, no shrinkage or permanent micro deformation after long-term static high-pressure oil soaking storage. Graphite-infused PTFE slim anti-extrusion rings are light ash gray with evenly scattered fine graphite powder across the thin flat surface, easy to separate from off-white carbon-filled PTFE rings applied to wide-gap pump and motor assemblies. The lightweight micro dust wiper ring is thin black with single ultra-fine scraping lip, dedicated to blocking sludge micro particles from entering narrow charging shuttle spool gaps. Each miniature accessory is laser printed with clear accumulator charging valve matching tiny dimension marks on the surface for rapid sorting and matching during on-site delicate assembly.

Q: What wide temperature range and static high-pressure + intermittent pulse charging 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 standby working pressure up to 520 bar, and withstand repeated instantaneous charging pulse peak impact pressure up to 580 bar without micro extrusion failure of delicate miniature sealing components. HNBR and PU components retain stable micro elastic recovery and cyclic sealing performance within -38°C ~ +122°C, fully adapting to sub-zero frozen mountain construction in winter and high-temperature continuous heavy pushing in summer. FKM micro O-rings can operate reliably within -26°C ~ +148°C, perfectly matching the high-temperature static oil storage state of all-season earthmoving construction with frequent accumulator pressure supplement cycles. Graphite-infused PTFE slim backup rings will not soften or deform under millions of intermittent micro spool sliding friction and persistent high static temperature, maintaining consistent micro anti-leakage protective performance through all seasonal construction environments.

Q: What hidden energy storage hydraulic circuit 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 narrow arc PU charging pulse buffer rings and graphite-infused PTFE slim anti-extrusion protective layers. After millions of static-pulse alternating pressure fluctuations and long-term sludge oil corrosion, the ultra-thin multi-lip shuttle spool sealing lip will fatigue and wear rapidly, triggering internal charging oil bypass and continuous slow micro oil seepage of the accumulator charging valve assembly. The bulldozer will exhibit rapid accumulator pressure loss after shutdown, frequent automatic charging action leading to increased pump load, insufficient instantaneous hydraulic power during emergency blade lifting, unstable system base pressure and obvious low-frequency hydraulic pulse vibration noise during long-hour heavy rock cutting operation. Worn tiny rubber and plastic micro debris will fall into the high-pressure energy storage circuit, pollute the whole hydraulic oil system, scratch the precision polished charging shuttle spool and valve body inner micro bore, requiring costly full replacement of integral metal charging valve core components, full hydraulic oil change and all filter element replacement. Meanwhile, persistent slow micro 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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