Silicone Sealant - excellent adhesive strength Ideal for use on copper and applications involving large gaps High temperature resistance LOCTITE SI 5990 is a non-corrosive silicone sealant and cures on exposure to moisture in the air to form a tough rubber gasket The nature of LOCTITE SI 5990 reduces the migration of liquid product after application to the part It has excellent temperature resistance characteristics and can also be used for electrical insulating applications This product is typically used in applications up to 350 degrees celsius Features: Suitable for all kinds of surfaces including metals and plastics High temperature resistance Electrical insulating product Oil resistant Copper colour