The Grahneis GmbH also has suitable material qualities available for special requirements – eg, in the pharmaceuticals industry or in the foods sector. The company focuses particularly on precision parts with especially superior dimensional accuracy.
These include, for example, pump diaphragms made of fluoro-rubber (FKM) as used in various fields. These parts, produced according to customer-specified norms in large production series, maintain tolerances of just a few hundredths of a millimeter – thanks to premium composition and special tool technology. Hydro-Stop diaphragms from Grahneis are used in reflux inhibitors in water fixtures. These diaphragms are made of either nitrile rubber (NBR) or of ethylene propylene diene monomer rubber (EPDM) and are suitable for drinking water according to the KTW and W 270 directives (German regulations on plastics levels for drinking water).