|An anxilary metal rings to prevent the roof of the lip against deformation due to high pressure.
||Metal O.D design with an inner case for greater sturctural rigidity or heavy duty outer cases necessary
||Metal O.D design with fluid side rubber covered
||Metal O.D design. This is one of the popular designs. The roof of sealing lip is bonded to the I.D of the metal case
||Metal O.D design for greater O.D sealing ability
||Rubber O.D and an inner metal component design for excellent O.D sealing ability