This 3.5 oz (100g) of gasket maker is the stuff I use in the shop for Ducati engines. It has never let me down. Forms a strong pliable gasket for mating surfaces, such as when reinstalling the alternator cover, clutch side cover, etc. A little goes a long way. This tube will probably last you for years and is identical to the formulation used at the Ducati factory. Do NOT trust generic permatex with engine parts.