Hydratech Industries, a seal manufacturer for wind power facilities and hydraulic systems, now uses a polyurethane seal from Freudenberg-NOK Sealing Technologies for its new hydraulic accumulator. Test comparisons with other products have shown that Freudenberg-NOK’s SIMKO 300 seal ring offers distinct advantages over frequently used polytetrafluorethylene (PTFE) seals with regard to operating life, form stability…