328-9669 3289669 261.77 mm inner diameter thrust washer of 140M 3 AWD 14L 12H NA

1. Quick Details of  seal 328-9669:

2. 328-9669 picture:

3. Service part number :

4. FAQ

Q: What unique material performance can piston seal ring part number 328-9669 offer?
A: Part number 328-9669 adopts bronze‑filled PTFE composite paired with NBR energizer. This material combination brings excellent anti‑extrusion capacity and low‑friction feature, maintaining stable sealing pressure under high‑pressure cylinder reciprocating motion and continuous bulldozer impact load.

Q: What visual appearance characteristics can customers observe for piston seal ring part number 328-9669?
A: For part number 328-9669, the main PTFE sealing body shows matte bronze‑grey tone, and the inner elastic energizer presents solid black, there is no additional paint coating or surface modification treatment on seal surface.

Q: Where is this piston seal ring installed on bulldozer?
A: This seal ring is assembled inside the piston groove of bulldozer lift hydraulic cylinder, located between piston outer circle and inner wall of cylinder tube.

Q: What core practical functions does this piston seal ring undertake?
A: It isolates high‑pressure hydraulic oil on both sides of piston, reduces internal oil leakage, and keeps steady output force for dozer blade lifting and tilting hydraulic cylinder.

Q: Can this ring work independently without matching main piston sealing elements?
A: It acts as guiding and auxiliary sealing part; dedicated main piston seals are still required for full pressure holding.olding effect.

Q: What storage suggestions do you offer for these PTFE sealing accessories?
A: Keep goods in cool, dry warehouse. Avoid persistent high temperature and long-time ultraviolet radiation to slow material aging.

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

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