This toughness makes urethanes ideal for parts subject to high impact or repeated pounding. Under repeated flexing, urethanes resist cracking as well as most other elastomers. Unlike rubbers, urethanes don't have to be made soft to make them resilient. In fact, urethanes can be as resilient as much softer materials. Flexible at low temperatures.
Special formulations allow urethanes to remain quite flexible even in frigid temperatures.
In addition, they have proven remarkably resistant to thermal shock and withstand sudden and drastic temperature drops without cracking. Won't swell or deteriorate in water. Urethanes remain stable even when immersed in water as warm as 120 F for very long periods of time. Urethanes are frequently utilized because of their excellent insulating properties. However, with certain additives, electrical conductivity can be increased.