KIESEL manufactures pigging systems in nominal diameters from DN 25 to DN 250 (additional diameters upon inquiry). The hygienic pigs are individually designed based on the plant standard respective customer's plant standard. This provides for our customers maximized service life in various areas of application as well as special degrees of cleaning within these areas. The pigs are available in the materials silicone (FDA-compliant), PU Vulcolan (FDA-complaint is possible), Viton and Viton extreme (FDA-complaint possible), Vulcozell, EPDM. NBR, HNBR, etc.