O Ring for Unloading Piston 1903021008 Replacement

O Ring for Unloading Piston 1903021008 Replacement is an unloader for Chicago Pneumatic HX2T 75-100, HX1T 20-25 and HX2T 50-60 compressors. It holds the suction valve open so the compressor runs unloaded once pressure is reached. The same number is written 1903 0210 08. You will find it in the Hp Cylinder Assembly, Suction Valve Assembly Lp Hp, LP Cylinder Assembly and 1 other parts lists. Send PFC your enquiry for this unloader.