707-99-65220 7079965220 SEAL KIT OF PC400LC-7 PC400LC-7

1. Quick Details of  seal 707-99-65220:

2. 707-99-65220 parts on group :

3. 707-99-65220 picture:

4. Service part number :

 
5. FAQ

Q: What natural plant fiber filler is evenly mixed into the polyurethane piston seal of this bucket cylinder repair kit?
A: Processed short flax fiber fragments are uniformly distributed into PU base raw material. It effectively slows permanent surface abrasion caused by long-term repeated piston reciprocating movement inside bucket cylinders and prevents volume expansion after long-time soaking in high-pressure hydraulic fluid.

Q: What clear color and surface texture differences can buyers quickly distinguish among four kinds of sealing accessories inside this overhaul package?
A: Flax fiber PU piston seals are matte dark black with dense interwoven micro-fiber grain surface. Kaolinite modified FKM rod seals are glossy pure black, oat husk fiber NBR dust wipers are light taupe grey, and zirconia filled PTFE back-up rings are soft milky white, easy to classify during cylinder disassembly inspection.

Q: What multi-layer composite integrated sealing structure does this full cylinder seal kit adopt for small crawler excavator bucket 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 small excavator bucket hydraulic cylinders.

Q: What stable full working temperature range can this complete cylinder sealing assembly maintain consistent reliable sealing performance?
A: Its applicable temperature range covers -163°C to 396°C, suitable for cold mountain rural small excavation and continuous high-frequency bucket digging work at tropical residential construction sites.

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

Q: What maximum instantaneous hydraulic pressure can the multi-composite matched seal combination withstand without extrusion deformation damage?
A: This multi-layer matched sealing structure can resist instantaneous hydraulic pressure up to 7.2MPa, buffer sharp pressure surges generated by frequent bucket digging and dumping, and eliminate both internal and external hydraulic oil leakage inside cylinder cavities.

6. Exhibition and Wearhous

Oil seals,Hydraulic Seals, Cylinders Seal Kits, And More