O-ring seal SA series

plasticfor rotating shaftsfor the food industry

The corrosion-free material properties mean that the plastic seals from GMN are particularly well-suited for protecting from watery liquids. Polyoxymethylene has a high resistance to a variety of acids (lactic acids), chemicals and fungi. GMN non-contact plastic seals are approved for the food industry. The SA design is additionally equipped with a drainage groove on the outer ring for rotating shafts that removes any penetrated liquid during heavy and direct spray impact. Technical data: The technical data for the SA design is the same as for the S design Characteristics Frictionless Thanks to their non-contact design, GMN labyrinth seals guarantee completely frictionless operation. Wear-free GMN seal components work completely wear-free and offer an unlimited service life. Abrasion-free The non-contact design of GMN seal components guarantees operation free from abrasion that fulfills the highest cleanliness requirements. (Approved for the food industry.) Effective The small distance between the outer and inner ring guarantees highly effective sealing and very good protection from fouling. Heat-free Because no friction heat is generated, neither the seal nor the adjacent components or the lubricant are subjected to thermal loads. Efficient The frictionless design enables operation without performance losses. This means that the seal offers maximum sealing effect with reduced energy consumption even at high speeds. Compact GMN labyrinth seals achieve 2–4-layered labyrinths in the smallest space.