The PORON" series 4701-30 urethane foam is soft (typical compression forces of 2 to 9 lb per square inch, depending on density, at 25 percent deflection) yet has exceptionally high resistance to compression set. This combination of features allows the new foam material to protect delicate components or hold a seal while under light compression, and over a long period of time. The material also is low outgassing and flame retardant. The 4701-30 formulation meets UL 94 HBF requirements down to and including 0.093" thickness, which are important criteria for many electronic and consumer product designs.
Rogers Corp., Poron Materials Unit, Woodstock, CT (800) 755-6766, ext. 8857.