These are external mounted Mechanical Seals inherently Balanced in nature. It's special design avoids contact of metal parts from liquid therefore such Seals are most commonly used in all kind of Acids, Alkalies,
Series 12T/12TB are Teflon Bellow Seal designed to handle highly corrosive chemical, such as concentrated acids, caustic, strong oxidizing and reducing agents, and chemically active organic components. These seal can be offered in composite or replaceable face design, replaceable face version give flexibility to select face material for the media to be sealed. All the components which come in contact with media to be sealed are made of chemically inert material, hence it is effective and reliable to perform against extreme corrosive media. Metallic Components such as clamping ring and spring does not come in contact with the media to be sealed.