Check out a large selection of O-ring assortments from Grainger to help ensure you’ve got the right kind of rings when you need them. Find O-rings made of Buna N, EPDM, neoprene, PTFE, urethane, high-saturated nitrile, and Viton materials in a wide range of sizes in sets of as many as 1,415 pieces. Restock your shelves with O-ring assortments from Grainger.