Baytec MS-081 Isocyanate-terminated polyester prepolymer Bayer PU - Prepolymers >> Isocyanate PU - Prepolymers >> Polyester SEALANT Baytec MS-081 Isocyanate-terminated polyester prepolymer Wheels, rolls, seals Dynamic performance, low compression set, oil/solvent resistance Isocyanate-terminated polyester prepolymer. Used in seals. Offers dynamic performance, low compression set and oil/solvent resistance.