312-4248 3124248 76.2mm connecting rod diameter buffer seal of 824G II 844H 844K

1. Quick Details of  seal 312-4248:

2. 312-4248  picture:

3. Service part number :

 
4. FAQ

Q: Can this piston rod seal be mounted to hydraulic cylinders of all construction machinery?
A: It is specially manufactured for grader tilt cylinders. It cannot fit excavator stick cylinders or wheel loader steering cylinders of different structural sizes.

Q: Where is this piston rod seal installed on bulldozer equipment?
A: It fits inside the cylinder head groove, working directly against the reciprocating hydraulic piston rod surface.

Q: What dual‑purpose functions can this seal achieve during equipment operation?
A: It buffers sudden hydraulic pressure spikes meanwhile blocks hydraulic oil from leaking out along the piston rod gap.

Q: Could this seal sustain heavy‑load impact pressure under earth‑moving working scenarios?
A: Composite material structure absorbs instantaneous pressure surges and keeps stable sealing performance under cyclic impact load.

Q: Are these rod seals manufactured according to standard cylinder installation groove specifications?
A: Each component is precision machined to match standard housing groove dimensions for heavy‑duty bulldozer hydraulic cylinders.

Q: Will continuous back‑and‑forth rod movement cause rapid abrasion on the sliding surface?
A: Modified PU formula improves sliding property, lowers friction loss and extends service life under repeated reciprocating motion.

Q: What unique advantages does apricot fiber reinforced FKM have compared with traditional sealing rubber?
A: It delivers excellent oil corrosion resistance and thermal stability, perfectly adapting to high-frequency movement of excavator boom cylinders.

Q: What practical efficiency benefits can on-site excavator maintenance staff gain from using this fully pre-matched rod seal kit?
A: All supporting sealing accessories required for rod overhaul are pre-assembled into one complete set without separate procurement. Technicians do not need to carry scattered loose seals or repeatedly measure rod groove dimensions on site, greatly shortening cylinder repair time.

5. Exhibition and Wearhous

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