Protektive Pak 37683 Foam, Black, Conductive, 1/2 x 37 x 57 in Cushion GradeProtektive Pak 37683 Foam, Black, Conductive, 1 2 x 37 x 57 in Cushion Grade Conductive crosslink polyethylene Rtt < 1 x 104 ohms This foam provides protection from physical shock during handling, packaging, and storage of ESD sensitive devices Non contaminating, non corrosive, and non sloughing 2. 8 lb ft density Dimensions are nominal; thickness is 1 16" Not recommended for lead insertion applications. See item 37707 for lead insertion grade foam.