NYSEAL®, a patented, pre-applied, permanently fused sealing element creates a gasket-type seal, prevents leakage of fluids under pressures up to 100 psi and eliminates the need for time-consuming, in-house applications of O-rings, gasket seals or sealant compounds. It is also useful for preventing chemical reactions between aluminum and stainless steel parts. NYSEAL® fasteners are reusable and the green sealing element will not shrink or dry out from age.