Freudenberg-NOK Sealing Technologies is introducing a new generation of polyurethane that is expected to set new standards for the sealing industry. The polyurethane was developed for a wide array of uses. It is more resistant to water and withstands major temperature fluctuations than existing polyurethanes.
Polyurethane is primarily known as foam for doorframes and mattresses and is also frequently used in paints and adhesives. Polyurethane is important for the production of seals that perform tasks under especially severe conditions. Along with excellent resistance to ozone, it has four times the robustness of elastomers. It also effectively withstands exposure to mineral fluids.
The usage spectrum for the new polyurethane ranges between -40°C and +120°C. This was made possible by a specific modification of the polyurethane components responsible for its temperature characteristics, so that seals made from the material stay flexible at low temperatures and sufficiently stable at high temperatures.
This new generation of polyurethane seals is especially well suited to construction and agricultural machinery, as well as materials-handling equipment which require high-performance materials that allow far longer periods of operation.