Under-the-Head Sealant (Water, Dust, Air & Noise)

Nyplas® sealant is a plastisol material pre-applied coating under the heads of a variety of fasteners to provide sealing against water, moisture, dust, air and noise dampening.


  • Seals/dampens immediately upon assembly
  • No secondary material required
  • Eliminates the need for O-rings, gasket seals and sealant compounds
  • Eliminates leak path
  • Reusable
  • Non-toxic, assembler friendly
  • Will not shrink or dry out with age
  • Meets major OEM specifications
Technical Data
  • Color: black
  • Temperature Range: -40°C (-40°F) to +150°C to (+300°F)
  • Can be applied to virtually any headed fastener
  • Shelf life indefinite
Performance Results
  • Seals up to 500psi
Manufacturing Specifications

  • FORD
    • ESB-M4G70 A OR B

  • GM
    • GM6086M-TYPE 3
    • GM1131M-TYPE D
  • Automotive

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