JB Weld 31314 High Temp Gasket Maker & Sealant Red RTV 100% Silicone POD Postage
J-B Weld 31314UK - Hi Temperature Gasket Maker & Sealant (Red) RTV 100% Silicone, Cracking Stuff for Exhaust manifolds etc. It will not shrink or crack, resists weathering, is sensor safe and is great for many automotive applications.