ARK C400/C500 RT 2 1/2-4

This 2 1/2 to 4 inch lead free repair kit is used for the Colt(TM) reduced pressure zone and detector assembly. The contents of this kit are used for proper maintenance to the internal rubber parts and uses red silicone on the check disk material. This total rubber parts kit consists of two shutoff disks, two check O-rings, two E-clips, relief valve diaphragm, relief valve piston, two sleeve O-rings, relief valve E-clip, relief valve O-ring, and lube.