1211 is recommended for sealing engine cases, gasket
surfaces, exhaust flanges, intake manifolds, etc.
1211 is effective over a wide temperature range, -76
to 482 degrees. The free-flowing low viscosity silicone
rubber is tack free in 90 minutes and cures in 24
Fuel, oil and chemical resistant, this is an excellent
choice to cure problem air leaks with intake manifolds,
head gaskets, crankshaft seals,etc. TB 1211 is used
by many OEM manufacturers, and it the sealant preferred
by most professional engine builders.