I have pneumatic cylinder on on milling machine tool changer that has a leaking internal seal. It works on the outward stroke but air exhausts out of the back valve on the return stroke.


Does anyone know if I could replace the internal seal on this cylinder?


If not does anyone have a spare lying around?


The cylinder is a Joucomatic Isoclair 435 50 438 c 25 A 150 (P max 140psi)