Exhaust Header GasketSeal-4-Good Header Flange GasketSeal-4-Good Header Flange Gasket; Square; 1.8 Inch x 1.5 in.;SPECIFICATIONS:WARNING CA Proposition 65: NoFEATURES:100 Percent ReusableMade Of Dead Soft AluminumMulti Layered Which Conforms To Header FlangesCreates Ultimate SealWill Not Blow-Out Or Burn-OutThe Percys Seal-4-Good Reusable Flange Gaskets are multi-layered and made from a special "Dead Soft" Aluminum, which conforms to header flanges for the ultimate seal. Since the Seal-4-Good is made from multiple layers of dead soft metal, it easily conforms to small imperfections that a copper gasket simply can not. Due to this construction, these gaskets will not blow out or burn out when properly installed.Percy's High Performance - A Product Line of Taylor Cable Products Inc. was started in 1995 by racers for racers, with a vision of developing unique, problem solving products for the racing and high performance automotive aftermarket. Since then Percy's has developed many products that have done just that. Percy's has patents on most of the products that we make and continue to lead the way in cutting edge technology and new concepts. All Percy's products are proudly made right here in the USA, and most parts are made right in house by people that care about our customers.