Hydroxyl-terminated polybutadiene(HTPB) is resistant to acid, alkali and hydrolysis with good transparency and strong electric insulation, which is used as sealing material in rubber products and electricity insulating material, adhesive, sealant, coatings, rubber modifier, reaction & injection, typecasting, It can also applies as adhesive of solid propellant in rocket, insulation inner lining of engine, healing of engine and coating of submarine Specification: Hydroxyl value, mmol of KOH/g : 0.65-0.8 Moisture content: 0.1% max Viscosity at 40íµ Pa.S: 2.5-5.5 Molecular Weight: 2300-3500 Packing: Minimum packing is a plastic barrel of 40Kg net each.