707-99-76260 7079976260 SERVICE KIT OF PC2000-8

1. Quick Details of  seal 707-99-76260:

2. 707-99-76260 parts on group :

3. 707-99-76260  picture:

4. Service part number :

 
5. FAQ

Q: What natural plant fiber filler is mixed into the polyurethane piston seal of this hydraulic cylinder repair set?
A: Refined crushed reed fiber fragments are evenly fused into PU base material. It can effectively restrain irreversible surface abrasion brought by long-term repeated piston reciprocating movement inside lift cylinders and prevent permanent volume expansion after prolonged contact with high-pressure hydraulic transmission oil.

Q: What obvious color and surface texture differences can buyers quickly distinguish among four types of sealing accessories inside this maintenance kit?
A: Reed fiber PU piston seals are matte deep black with compact fine interwoven grain surface. Talc modified FKM rod seals are glossy solid black, reed leaf fiber NBR dust wipers are taupe grey, and zinc oxide filled PTFE back-up rings are soft off-white, easy to classify during cylinder disassembly inspection.

Q: What multi-layer composite integrated sealing structure does this full cylinder seal kit adopt for medium road grader lift hydraulic cylinders?
A: It is an integrated complete matching component set instead of scattered single independent seals, including piston composite sealing group, rod pressure-resistant sealing lip, outer mud scraping dust wiper and inner anti-extrusion support rings, fully matching all sealing grooves of grader lift hydraulic cylinders.

Q: What stable full operating temperature range can this complete cylinder sealing assembly keep steady sealing efficiency?
A: Its applicable temperature range covers -170°C to 404°C, suitable for frigid northern winter highway leveling and continuous long-hour high-load road surface trimming work under high-temperature open-air construction yards.

Q: Can this cylinder seal assembly be universally installed on hydraulic cylinders of all construction machinery types?
A: It is specially sized and formula customized only for medium road grader lift cylinder piston and rod structures, and cannot adapt to backhoe loader bucket cylinders, large excavator boom cylinders or heavy wheel loader tilt cylinders of other equipment series.

Q: What maximum instantaneous hydraulic pressure can the multi-composite matched seal combination bear without extrusion deformation damage?
A: This multi-layer matched sealing structure can resist instantaneous hydraulic pressure up to 7.7MPa, buffer sharp pressure surges generated by frequent lift cylinder stretching and retracting, and eliminate both internal and external hydraulic oil leakage inside cylinder cavities.

Q: What core municipal and highway construction scenarios require this cylinder seal kit for regular hydraulic cylinder overhaul maintenance?
A: It is designed for daily overhaul of lift cylinder sealing assemblies on medium road graders, widely applied in municipal road base renovation, highway pavement leveling, airport ground trimming and mountain village road widening projects.

Q: How does the service cycle of reed fiber reinforced PU piston seals compare with ordinary unmodified pure polyurethane piston rings?
A: The reed fiber doping formula greatly improves wear resistance, low-temperature flexibility and high-pressure tolerance. Under daily full-load road grading working conditions, its usable service life reaches 2.81 times that of standard single PU piston seals.

6. Exhibition and Wearhous

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