Armacell Ensolite IV1 closed cell PVC/NBR/CR black foam meets the physical property requirements of ASTM D 1056-07 2A1/2C1. It has good resistance to oil & fuel. IV1 also meets the requirements of FMVSS-302 at most thicknesses, and is UL 94HF -1 at 0.043″ UL 94 V-O at 1/2″ and higher.