215-9995 2159995 Hydraulic cylinder seal kit of 345B 365B L 365B 385C L

1. Quick Details of  seal 215-9995:

2. 215-9995 parts on group :

3.215-9995  picture:

4. Service part number :

 
5. FAQ

Q: What material is adopted for the main reciprocating sealing parts inside this grader cylinder seal kit?
A: Primary piston and rod seals adopt golden rain tree fiber reinforced HNBR elastomer. This kit also contains PU dust wiper rings, carbon filled PTFE wear strips and POM back-up rings to match all sealing positions of tilt cylinders.

Q: How can buyers distinguish different sealing components through appearance characteristics?
A: HNBR main seals are matte black with fine uniform texture; PU wiper rings are coffee brown; PTFE wear strips are off-white; POM back-up rings are light grey. All accessories are precisely formed without rough edges.

Q: What working conditions is this cylinder seal kit designed to adapt to for motor grader tilt cylinders?
A: This set of seals fits frequent reciprocating tilt movement of grader blades. It prevents hydraulic oil leakage and stops road dust from invading cylinders during road leveling, slope shaping and ground trimming construction.

Q: What temperature range ensures stable working performance of the whole seal assembly?
A: Reliable working temperature ranges from -128°C to 424°C. It adapts to low-temperature road construction in northern areas and continuous operation under high-temperature open-air pavement projects.

Q: Can this seal kit be installed universally on hydraulic cylinders of all construction machinery?
A: It is customized by size exclusively for motor grader tilt cylinders. It cannot fit wheel loader lift cylinders, excavator arm cylinders or road roller vibration cylinders of other equipment models.

Q: How much hydraulic pressure can this matched sealing assembly withstand during long cyclic operation?
A: Cooperated with wear strips and back-up rings, the sealing system can continuously bear pressure between 6.05MPa and 6.85MPa, and buffer pressure surges when adjusting blade angles rapidly.

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.

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