While there are several options when it comes to approved polymeric or elastomeric seals for food processing applications, PTFE is one of the more popular choices–and that includes rotary shaft seals, as well.
Why are PTFE rotary shaft seals good for food processing applications? Rotary shaft seals for food processing equipment have to do more than an ordinary seal: they also need to withstand aggressive cleaning and sanitation regimens that may involve corrosive chemicals, be approved for contact with food, and offer effective, reliable performance.