In order to ensure that process plants meet hygiene requirements, industry-specific approvals and resistance to CIP/SIP media, Freudenberg Sealing Technologies has developed a new series of high-performance seals for butterfly valves. The seals have been developed in conjunction with French customer Definox, one of the leading manufacturers of first class process valves and stainless steel equipment for high-end applications in sectors such as food, beverage, cosmetics, pharmaceutical and animal feed.
Following rigorous tests, 70 EPDM 291 O-rings have already been delivered to Definox, where they have been successfully deployed and demonstrated. Based on this first success, both companies decided to launch a project for the development of new butterfly seals.











