Permatex Optimum Easy-Disassembly Black NOW has Easy-Disassembly feature to reduce the time it takes to disassemble the engine or parts. Apply Optimum Easy Disassembly as normal and when it comes time to take apart, all you have to do is loosen the parts from each other and peel away the gasket maker with your fingers. Its that easy! Permatex Optimum Easy Disassembly Seals Strong and Removes Fast. Permatex Optimum Easy Disassembly Black combines maximum oil resistance with maximum flexibility. Today, we see components changing and unlike materials meeting (plastic/steel, aluminum/steel, etc.), all with different rates of expansion and contraction. In addition, with technology advancing, regulations and requirements tightening, we see thinner metals, fewer fasteners, and wider spread bolt patterns. The strength and flexibility of Optimum Black handles the changes and added stresses that exist between today’s lightweight, high performance, and premium component assemblies. Optimum Black is sensor safe, low odor, and non-corrosive with resistance to oil, shop fluids. It is one of the most advanced, maximum flex, maximum oil resistant RTV silicone gasket makers available.