NYSEAL® creates a gasket-type seal, preventing leakage of fluids and gases under pressures up to 500 psi. The coating is fused on the bearing surface of the fastener. As the screw is seated to its final position against the mating part, the NYSEAL® element compresses slightly and fills the void under the bearing surface of the head and countersink/counterbore.


Product Advantages

  • Eliminates time-consuming, in-house applications of O-rings, gasket seals and sealant compounds 
  • Eliminates the leak path 
  • Easy to use in assembly
  • Prevents galvanic corrosion between dissimilar materials
  • Reusable and highly durable
  • The sealing element will not shrink or dry out from age 
  • Resistant to chemicals like alcohol, gasoline, oil, kerosene, diesel fuel and hydraulic fluids 
  • Screw strength is unaffected
  • Will not work loose


Technical Data

Property Description Property Description
Operation temperature -40℃ ~66℃ Coating range 360° Under-the-head



NYSEAL® is a registered trademark of Nylok USA.