With COG VarioPur®, C. Otto Gehrckens presents a new product range in the premium segment: the three high-performance materials in the VarioPur series are based on thermoplastic polyurethanes (TPU/AU). Both the abrasion and the extrusion resistance are at least five times higher than those of the traditional material NBR, which has a Shore A value of 90.
Furthermore, the three TPU materials impress with excellent gas tightness and a high level of tolerance to a wide range of gases - from oxygen and nitrogen to all of the synthetic hydrocarbons. They exhibit no brittleness as a result of exposure to ozone or oxygen.
