Silicone grease lubricates and conditions rubber products such as o-rings and other regulator and valve system components. Ideal for breathing apparatus, BCD's, hoses, cylinder o-rings, pressure systems, cameras, dive lights and more. Specially formulated to permeate rubber surfaces to provide deep, long lasting conditioning. Superior oxidation resistance and water repellent. O-rings treated with silicone grease resist drying and cracking and provide a better seal. Non-flammable, non-toxic formula.