Leading chain manufacturers suggest you use kerosene to clean your chain. Tirox® Chain Degreaser / Cleaner contains mostly kerosene, as recommended. If your chain cleaner does not contain kerosene, then you could be distressing your O-rings. Tirox Chain Degreaser / Cleaner is formulated to remove heavy residue and deposits efficiently from chains, sprockets, rims and swing arms. It won’t harm O, X & Z rings or plastics. Regular use and cleaning with Tirox Chain Cleaner with Kerosene extends chain life and optimizes performance.