For drives with short dimensions having a short shaft distance dimension we would recommend POLY-NORM. The customer is allowed to select among a large number of various designs. POLY-NORM is also available as a three-parted design for a radial replacement of the elastomer ring. As a standard POLY-NORM is supplied with ATEX marking. Apart from the extension of the series by the sizes 140, 160 and 180, new components are the new spline rings made from the temperature-resistant material FKM.