When it comes to gasket design, PORON 4701-40 polyurethane is a soft foam that is fit for the job. The material provides a broad range of compression performance for gasketing and sealing in a variety of applications in portable electronics, automotive, aerospace and more.


  • Thickness range of .79 to 12.7 mm (.031 to .5 in.)
  • Available densities of 240, 320 or 480 kg/m3 (15, 20 or 30lb/ft3)
  • Typical compression force deflection of 41, 76 or 173 kPa (5, 11 or 25 psi)


  • Excellent dimensional stability
  • Extremely durable
  • Maintains integrity in lengthy temperature fluctuations



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