Use for camshaft sprocket bolts, crankshaft bolts, idler bearings, press fit filler tubes, transmission input and output shaft threads and ring gear or shock bolts. For all 3/8 in to 1 in diameter nut and bolt assemblies. Seals against leakage; prevents boltsand press fits from loosening due to shock, severe vibration and heat stress. Protects threads from corrosion. Removable with hand tools for easy disassembly. Resistant to chemicals and dripping from threads during assembly. For newer engines and high-performance applications that require extreme temperature resistance. -65 to 450° Fahrenheit temperature resistance range. Heavy duty.