J-B Weld Hi-Temp Red Silicone Gasket Maker & Sealant is an RTV (Room Temperature Vulcanized) silicone gasketing material, designed for use in mechanical assemblies where the existence of higher, continuous temperatures up to 550 deg F or 650 deg F intermittent might exist.

Upon curing, which occurs when the product is exposed to the moisture in air, the silicone forms a tough, waterproof seal on most surfaces. It will not shrink or crack, resists weathering, is sensor safe and is great for many automotive applications.

• Hi-temp 100% silicone sealant is resistant up to 650 degrees
• Set time is 1 hour - cure color is red
• Use as gasket maker for oven doors, water pumps, valve covers, oil pans, exhaust manifolds & more
• Made in the USA