The very soft PORON 4701-30 polyurethane foam is ideal in applications where flexibility is a key requirement. PORON 4701-30 foam material maintains its integrity and effectiveness in gap filling, gasketing and vibration isolation applications.


  • Thickness range of .031 to .5 in (.79 to 12.7 mm)
  • Available densities of 320 or 400 kg/m3 (20 or 25lb/ft3)
  • Excellent compression set resistance
  • Temperature range of -51 to 121° C (constant use recommended at 90°C)


  • Flexible and easily compressed
  • Excellent durability
  • Noise reduction



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