Moldings from reinforced polyurethane-urea elastomers and their use

A molding comprising one or more polyurethane-urea elastomers, having a urea content of from about 70 to about 95 mol % and a urethane content of from about 9 to about 30 mol %, based in each case on mol % of an NCO equivalent, the elastomers produced by reacting:

• a component A containing
• A1) one or more aromatic diamines having an alkyl substituent in at least one ortho position to the amino groups,
• A2) an aliphatic component consisting of at least one polyetherpolyol and/or polyesterpolyol having a number-average molecular weight of from about 500 to about 18,000 and a functionality of from about 3 to about 8 and having at least one of hydroxyl and primary amino groups,
• A3) a reinforcing agent;
• and
• A4) optionally catalysts and/or optionally additives,
• with a component B produced by reacting
• B1) a polyisocyanate component chosen from polyisocyanates and polyisocyanate mixtures of the diphenylmethane series and liquefied polyisocyanates of the diphenylmethane series, with
• B2) at least one polyol component having a number-average molecular weight of from about 500 to about 18,000 and a functionality of from about 3 to about 8 chosen from polyetherpolyols optionally containing organic fillers and polyesterpolyols optionally containing organic fillers,
• wherein at least one of component A and component B contains rubber gels (C) modified by groups reactive towards isocyanate groups.