Transparent, non-toxic, tasteless, semi-solid material, packed in 20 kgs/carton. Polyisobutylene HRD-5001.HRD-500 Mv:50,000 ± 25002.Packing: 20kgs/carton, 12,000kgs/pallet.3.Applications: Hot melt butyl sealant, Lubricant grease, PV sealant, Paraffin, Bitumen, Adhesive, Etc.4.Specifications: Polyisobutylene (PIB) HRD-500