1945
The production of the mechanical seals ROTEN started in 1945 in Milan with the company “LABORATORIO ELETTROMECCANICA DI PRECISIONE Carlo Fontanella”, founded by Mr. & Mrs Fontanella, then modified in ROTEN srl; The name ROTEN comes from the union of two abbreviated words RO = “rotate” and TEN = “sealing”. In 1945, the activity began with the production of TOMBAC metal bellows seals for refrigeration compressors.
1957
ROTEN patented its first seal, the ROTEN 2 with a self-driving spring, still produced today and sold worldwide in millions.
1970
ROTEN patented the ROTEN 3 with spring with three diameters sold worldwide in million pieces.