▪ 90% Pure Silicone Grease ▪ Will Not Harm Plastic Or Rubber Parts ▪ Lubricates And Prevents Rust, Oxidation And Corrosion ▪ For Use On Faucets, Valve Stems, Ballcock Linkages And Other Places ▪ Withstands Temperatures From 40‚° To 400‚° F ▪ Waterproof