Abstract: A cartridge seal is described where the outer ring 1 and the inner ring 4 are inseparably joined to each other. The outer ring has a circumferential groove 2 which is axially open in a direction toward the outside 14 and which is engaged by a first and second sealing lip of the inner ring 4. The second sealing lip 9 is formed by an extrusion of the protruding end of the first sealing lip 8. Both sealing lips 8, 9 contact their corresponding counter surfaces 6, 7 with circumferential sealing edges 10, 11.

Abstract: A coffered seal including an inner ring having a U-shaped cross section open radially outward and consisting of two rings of L-shaped cross section facing each other and joined together by bearing sleeve. Within the space embraced by the U-shaped cross section is an outer ring also having a U-shaped cross section open axially and having an outer side and an inner side of frusto-conical shape. Two sealing rings in the space embraced by the cross section of the inner ring having lips that engage opposite surfaces of the frusto-conical inner side of the outer ring at approximately the same diameter to form inner and outer circular seals against the same.