When the Deventer plants started production in 1920, they produced sealing technology for the fields of mechanical engineering and electromechanical engineering.
Over the years, the piston rod packing has become the leading product. This is why the company was renamed to STASSKOL - STASSfurter KOLbenstangendichtungen (piston rod packings manufactured in Staßfurt) in 1991.
The production of sealing elements for reciprocating machines, i.e. piston compressors, was extended in 2009 with the wide range of shaft seals which are used in rotating machines, i.e.  turbocompressors, fans, etc.