PIB 1. HRD(F)-950 Mv:95000 2. For hot melt butyl sealant,chewing gum base,medical plaster,pv sealant,lubricant grease etc. Medium molecular weight PIB (Insutrial & Food Grade) Applications:sAdhesives, Sealants, Chewing gum base, medical plasters, lubricant grease Polyisobutylene HRD(F)-950