A success story - and how it all began ...

1919 Two farsighted designer engineers at Blohm & Voss in Hamburg started their own business in 1919 in order to start production of ship installation equipment made of brass. At that time, all products made of brass were still being cast at the shipyards themselves by a time-consuming process, so for Wilhelm Hoppmann and Hermann Mulsow it was simply a logical step to manufacture these units at low cost and with high precision by series production.

          Wilhelm Hoppmann            Hermann Mulsow

After just a few years, the good insulating capability of plastics was recognised, and as early as 1925 a start was made on the production of parts made of Duroplast.   At the end of the 1920s, WISKA produced the first cable gland made of thermoset, ISOSTABIL.

        Company premises in Hamburg

Peter and Karin Hoppmann

1954, Peter Hoppmann took over the business in 2nd generation. Later on his wife Karin also joined the management.   1961, the Mulsow family left the company, and so from that time onwards the Hoppmann family alone has been controlling the destiny of the company.