4I-6442 4I6442 210.2mm inner diameter support ring of 365C 385B 385C 365B

1. Quick Details of  seal 4I-6442:

2.  4I-6442 picture:

3. Service part number :

4. FAQ

Q: Can this piston seal ring adapt to hydraulic cylinders of all construction equipment?
A: It is specially matched for grader lift cylinders. It cannot be installed on excavator stick cylinders or wheel loader tilt cylinders.

Q: Does this piston seal ring come with split opening design?
A: Yes, it uses step split structure for simple field assembly. The seamless integrated version can be customized upon special requests.

Q: What role does this guiding ring play inside hydraulic cylinders?
A: It guides piston movement, withstands transverse loads and prevents direct metal contact to reduce cylinder inner wall abrasion.

Q: What hydraulic pressure level fits graphite filled PTFE wear rings?
A: It runs smoothly under continuous high pressure. Fabric reinforced resin material performs better under cyclic impact loads.

Q: Is the product capable of stable operation under frequent reciprocating motion?
A: Sure. Graphite filler enhances self-lubricating performance and lowers wear during long continuous working cycles.

Q: Are these sealing rings sold separately or assembled into service kits?
A: Individual pieces can be supplied directly. We can match various sealing spare parts to form complete overhaul kits.

Q: What hydraulic fluids are compatible with this guiding component?
A: It works well with mineral hydraulic oil and most synthetic hydraulic fluids with stable chemical resistance.

Q: What engineering projects commonly require replacement of this piston seal ring?
A: It serves routine maintenance of hydraulic cylinder piston sealing assemblies on medium crawler excavators, widely used in urban infrastructure, highway subgrade construction, small quarry loading and residential foundation excavation projects.

5. Exhibition and Wearhous

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