McNett Silicone Grease is specially formulated to permeate rubber surfaces to provide deep, long lasting conditioning and lubrication. Use on O rings in your dive gear, cameras and headlamps. Also helps provide a better seal against water and dust. 100% food grade silicone permeates the surface of materials to prevent oxidation and extend the life of products. Some users report great success using the grease to condition and preserve latex drysuit and dry top gaskets. Ideal for breathing apparatus, BCDs, hoses, cylinder O rings, pressure systems, cameras, waterproof flashlights, medical equipment, electrical connectors, pipe fittings and anywhere resistance to moisture and degradation is desired. Comes in handy snap top container a little bit goes a long way.