A black RTV silicone for oxygen sensors. This RTV silicone is great to use to create gaskets in place, is also an excellent adhesive, sealant and caulk. Ideally suited wherever a strong, permanently flexible weatherproof caulk, adhesive or sealant is needed. Excellent as an adhesive for bonding plastic and metal. Works well in high humidity, is mildew resistant, and won’t fade or discolor with aging. When fully cured forms an extremely tough, rubbery solid like material.