03-11-2016, 12:11 PM
WD-40 is completely safe for O-rings. It is a formula similar to kerosene. Motorcyclist magazine recently tested WD-40, soaking chain O-rings in the product for an extended period. The rings suffered no damage whatever and were as soft and pliable as new. I have been using WD-40 as a chain cleaner for over 12 years and have gotten excellent results. Like kerosene it is highly flammable.
