The seal of the front end of the cylinder and the cylinder, "O" ring, why has it been serrated for some time?,
1., your O ring quality is not good, that is, the process and material problems.2. may be the contact material of your O ring, causing it to wear out
It should be considered that the gap between the two mounting surfaces of the 0 type ring is too large.It is recommended to reduce the fit clearance or increase the retaining ring.
It should be the sawtooth at the other end of the pressure chamber.
