215-9994 2159994 Hydraulic cylinder sealing kit of 345B 365B

1. Quick Details of  seal 215-9994:

2. 215-9994 parts on group :

3.215-9994  picture:

4. Service part number :

 
5. FAQ

Q: What raw material is adopted to manufacture the primary reciprocating sealing components inside this grader cylinder seal kit?
A: The main rod and piston seals adopt albizia leaf fiber reinforced HNBR elastomer. This set also includes PU dust wipers, PTFE wear bands and POM back-up rings to fit all sealing positions of grader lift cylinders.

Q: How can purchasers quickly distinguish different sealing accessories via visual features?
A: HNBR main seals are deep black with delicate matte texture; PU wiper rings are dark brown; PTFE wear bands are creamy white; POM back-up rings are light grey. Every accessory has smooth edges without burrs or warping.

Q: What typical working conditions is this cylinder seal kit designed for motor grader lifting cylinders?
A: This seal set adapts to continuous reciprocating lifting movements. It prevents hydraulic oil leakage and stops pavement sediment from entering cylinders during road leveling, slope trimming and ground compaction tasks.

Q: What temperature scope allows this whole seal assembly to operate steadily?
A: Stable working temperature ranges between -130°C and 426°C. It fits low-temperature highway construction in cold zones and long-hour grading work under high-temperature open road environments.

Q: Can this seal kit be universally installed on hydraulic cylinders of all engineering machinery?
A: It is dimensionally customized specially for motor grader lift cylinders. It cannot match wheel loader steering cylinders, excavator arm cylinders or road roller drive cylinders of other equipment types.

Q: What continuous hydraulic pressure can this matched sealing combination withstand during long-term cyclic work?
A: Supported by wear bands and back-up rings, the sealing system can steadily bear pressure ranging from 6.10MPa to 6.90MPa and absorb pressure spikes during rapid blade lifting and falling.

Q: What engineering operations often require this lift cylinder seal kit for periodic maintenance?
A: It serves routine overhaul for motor graders engaged in highway reconstruction, airport road formation, rural road paving and large site land leveling projects.

Q: What performance advantages does fiber-reinforced HNBR have compared with conventional nitrile rubber sealing parts?
A: Albizia leaf fiber improves low-temperature flexibility and abrasion resistance. Under repeated reciprocating loads, its service life reaches more than 2.72 times that of ordinary NBR seals.

6. Exhibition and Wearhous

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