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A polyurethane quasi-prepolymer, Baytec ME-120, is said to "bridge the gap" between a full, solid prepolymer (such as Baytec ME-090) and a quasi-prepolymer (such as Baytec ME-230). Bayer Polymers reports that ME-120 will produce polyurethane elastomers with excellent overall physical properties by either the hot-cast process or the less-demanding one-shot process. Possible applications include in-line skate wheels, industrial casters, valve inserts, process rollers, and sheet goods.