Rubber products such as O-rings. Regulator and valve system components. Breathing apparatus, B.C.D.s, hoses, cylinder O-rings, pressure systems, cameras. Trident Brand Silicone Grease is formulated to permeate rubber surfaces to provide deep, long lasting conditioning. Treated products resist drying and cracking and provide a better seal. Also great to waterproof flashlights, medical equipment, electrical connectors, pipe fittings and anywhere resistance to moisture and degradation is desired. Ideal for lubricating moving metal parts. Permeates the surface of materials for thorough lubrication. Preserves rubber, plastic and metal. Reduces damage caused by sticking or exposure to the elements. Superior oxidation resistance and water repellency. Remains pliable even after extended use. 100% pure. Non-flammable, non-toxic formula.