For lack of a better description...it goes on with the consistency of "sticky Vaseline." It doesn't drip or run. An example of its performance...aircraft (most) engine crank cases are two piece, with the crank shaft "sandwiched" between them. The case is held together with a series of bolts, studs and nuts. The two mating surfaces do not use a gasket of the sorts, but a strand of silk thread (same size a common sewing thread) and in the past, brush on "Permatex" was used as a sealant. Now all we use is the 515. I usually apply a small bead of the 515 on the flange or the mating surfaces and spread it evenly with a brush. (acid brush) When actually using a gasket (cork or paper) I'll massage the gaskets with the 515 using my fingers. You don't need a lot on the a gasket, just make sure it has been coated on both sides. Yes, it's a little expensive, but it goes a long way. I'll add one last thing. The 515 is not intended to fill voids in what you are building, it is intended to be used with "well mating surfaces and gaskets." It does not " require a "hammer and chisel" to take it apart.
