Permatex the right stuff is a single component, room temperature curing, elastomeric gasketing compound designed to provide reliable formed-in-place gaskets for mechanical assemblies. It has been designed specifically as a replacement for conventional cut gaskets where instant sealability is advantageous. - The right stuff is a non-slumping, non-corrosive, low odor, low volatile, single component, proprietary, hi-tech, elastomeric rubber gasketing material.