The Poron polyurethane black open-cell foam sheet has a medium firmness and meets Underwriters Laboratories ULHBF and Federal Motor Vehicle Safety Standard FMVSS 302 specifications. Poron foam is a polyurethane material that provides excellent recovery from compression and offers good chemical resistance. It has a medium firmness, which requires approximately 8 to 14 psi of pressure to compress.

Industrial foam is made of plastic or rubber and has internal air cells that make it lightweight and ideal for sealing and cushioning.