Hi-Temperature Silicone sealant is a one-part, moisture curing, RTV (room temperature vulcanizing) silicone that cures to form a tough rubber gasket. RTV high temp was specifically formulated to be used as a formed-in-place gasket where operating temperatures up to 310??C (600??F) are reached intermittently. high temperature silicone will remain permanently flexible and provides excellent resistance to aging, vibration and shock. TYPICAL USES The primary use for RTV high Temp high temp silicone is formed-in-place gaskets in high temperature applications to replace conventional paper and cork gaskets. Such uses include: Automotive ??? valve covers ??? axle housings ??? water and oil pump seals ??? thermostat housings ??? bearing cap seals ??? timing chain covers ??? fuel pumps to blocks ??? solenoid covers Industrial ??? pump and compressor gaskets ??? appliance door gaskets ??? humidifier gaskets ??? air conditioner gaskets ??? repairing torn silicone rubber sheets ??? ductwork gaskets ??? dust collection components ??? wire and cable insulation ??? furnace door gaskets DIRECTIONS high temperature silicone is ready to use and requires no mixing or additives. The cure mechanism begins as soon as the sealant comes in contact with the air. At conditions of 25??C (77??F) and 50% relative humidity, the sealant will skin in 10 minutes and cure within 24 hours (1/4 bead), ultimate cure in 7 days. SURFACE PREPARATION All surfaces should be clean and dry. It is recommended that bonding surfaces be solvent wiped with a naphtha, ketone or chlorinated solvent. Suitable solvents include xylol, toluol and mineral spirits. Do not solvent wipe with alcohols or oil-containing solvents such as Varsol. For gasket applications, apply an even bead, with a diameter of 1/8 or less, to one surface, making certain to surround all bolt holes. Press, do not slide parts together, and torque normally. On surfaces where adhesion is not desired, a light coat of oil or grease will act as a release agent. If removal of high temperature silicone is necessary, it can be wiped off surfaces to be mated when uncured. After the material cures, it can be abraded or scraped from the surface. High temp silicone is not recommended as a gasket for cylinders