The green-colored pre-applied Nyseal sealing element from Nylok Corp. is said to eliminate application of O-rings, gasket seals and sealant compounds by creating a gasket-like seal at pressures up to 500 psi. The coating is said to be permanently fused on the bearing surface of the fasteners, eliminates the leak path and will not work loose. It is also said to prevent galvanic corrosion between dissimilar materials, is highly durable and will not shrink or dry out from age.
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