The ACS sump tank filter is constructed with the highest quality materials to withstand burst pressure ratings required by Atlas Copco. Spin-on oil filter elements are installed by simply spinning off and thenreplacing the current filter element on your Atlas Copco Oil FIlter Replacement air compressor. Our Atlas Copco oil filters are manufactured of synthetic, paper, metal, mesh or cloth with a micron rating matching Atlas Copco’s specifications.