O-rings are the most common sealing device. OEM International has the largest selection of molded components and offers unlimited sizes through vulcanization. All O-rings are manufactured to established standards including ASTM, SAE, DIN, ISO and JIS. Our rubber compounds include nitrile butadiene, butyl, fluorosilicone and natural rubber. In addition to O-rings, we offer cord, lathe cuts, quad rings, kits, molded profiles and extrusions.