370-1932 3701932 Hydraulic cylinder sealing kit of 312D2 312D2 L 385C L

1. Quick Details of  seal 370-1932:

2. 370-1932 parts on group :

3. 370-1932 picture:

4. Service part number :

 
5. FAQ

Q: What raw material is used for the main dynamic sealing parts of this seal kit?
A: Primary piston and rod seals adopt mulberry fiber reinforced HNBR elastomer. This set also includes PU dust wiper rings, molybdenum filled PTFE wear strips and POM back-up rings to match all sealing positions of arm cylinders.

Q: How can I distinguish each sealing component simply by appearance?
A: HNBR main seals are matte black with delicate compact texture; PU wiper rings are reddish brown; PTFE wear strips are snow white; POM back-up rings are light grey. All parts are precisely processed with smooth edges.

Q: What operation movements is this cylinder seal kit designed for small excavator arm cylinders?
A: This set of seals adapts to continuous extending and retracting movement of the excavator dipper arm. It avoids hydraulic oil leakage and blocks silt when digging soil and transferring materials on construction sites.

Q: What temperature range guarantees stable continuous operation of this whole sealing assembly?
A: The stable working temperature ranges from -102°C to 398°C. It can handle low-temperature winter construction and long-time excavation work under high-temperature outdoor environments.

Q: Can this seal kit be installed on hydraulic cylinders of all construction machinery universally?
A: It is customized with dedicated dimensions for small excavator arm cylinders. It cannot fit wheel loader bucket cylinders, motor grader tilt cylinders or road roller steering cylinders of other machine models.

Q: How much continuous hydraulic pressure can this matched sealing assembly withstand during repeated cyclic work?
A: Supported by wear strips and back-up rings, the sealing group can continuously bear pressure between 5.40MPa and 6.20MPa and relieve pressure surges when the arm touches hard ground.

Q: What construction scenarios often require this arm cylinder seal kit for regular maintenance?
A: It is widely used for maintaining mini excavators working on villa foundation projects, landscape engineering, pipeline trenching and rural road reconstruction.

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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