The O-Ring (OEM Part No. 0663212600) is a replacement sealing component used on Epiroc / Atlas Copco Boomer H127, Boltec 235H, Simba M7C, COP 1532 and COP 3060 drilling equipment and rock drills. It is installed within hydraulic and mechanical assemblies to provide reliable sealing between mating components, helping prevent lubricant or hydraulic fluid leakage and reduce the entry of dust and contaminants. The 0663212600 O-Ring is suitable for routine maintenance, overhaul and seal replacement when the original component becomes worn, hardened, cracked or damaged. Public parts documentation specifically lists this O-ring in the COP 1532 assembly.