Series B20N & B20LS are designed for extremely corrosive chemicals, including concentrated acids, salts, strong oxidizing & reducing agents, and chemically active organic compounds. All components which come in contact with the liquid being sealed are made of chemically inert material. Metallic components, clamping ring and springs are located outside the media.

Series B20N : In this seal series Glass filled PTFE face is composite molded with highly flexible PTFE bellows.

Series B20LS : This seal is designed with replaceable sealing faces and is positively driven by integral lugs on bellows. These lugs impart smooth drive to the face. Replacement of faces can be done easily.