It can withstand temperatures as high as 650°F (343°C). Perfect for thermostat housings, headers, intake and exhaust manifolds, etc. It is leak-proof and won't interfere with oxygen sensors. Size of Part No. in Pieces/Case 12/CASE 11-AB 3 OZ/85g 11-AB-42* 12/CASE, 1.5 OZ/42.5g