The integral spaced lugs 50 extend downwardly beyond the bottom edge of the side wall and the bottom surface I38 of each of the lugs is adapted to engage the upper surface of the bottom wall 48 to provide a plurality of spaced passages I38 between the vertical portion of the lugs which lead to the annular opening or circumferential discharge passage 5|. Some or all of these lugs are tapped as at I39, through their lower surfaces I36 in alignment with mating openings I40 about the outer edge of the bottom wall 48 to receive bolts I42 whereby the bottom and side walls are secured together to provide a rigid unitary structure. Each of the integral inwardly and downwardly projecting combined lugs and spacers has its outer peripheral portion I44 in approximate alignment with the inner periphery 4'! of the side wall 45 to provide forthe annular circumferential discharge passage 5 I. This spacin permits the liquid pressure to act uniformly on the entire sealing ring 52 when the tub is rotated and at the same time provides a uniform seating surface therefor. In addition to the spacing of the lugs from the outer periphery of the side wall, the lugs 50 are preferably elongated circumferentially about the tub to provide a pair of relatively wide and flat outwardly tapering inner surfaces I46. By elongating the lugs in this manner, the tendency of particles of lint or pieces of string-like fabric to wrap or become snared about the lugs is reduced, because the increased surface will tend to cause a large portion of the material to move in one direction or the other through the passages I38 when the tub is rotated and not wrap about the lugs and extend outward from both sides thereof through the discharge passage 5I. The centrifugally operated toroidal resilient ring or valve 52 is positioned about the outer peripheral portion of the base to seal the annular passage 5i against the now of liquid therethrough by being in contact with the lower edge of the side wall 45 and the upper outer marginal edge I43 of the bottom wall 48, The diameter of the ring and modulus of elasticity is so selected as to insure seating when the tub is stationary and that it will stretch or yield when rotated above a given speed. This toroidal rin is further provided with an integral downwardly and then inwardly extending flange I55 which is clamped to the bottom wall by means of the bolts I42 to hold and guide the same when the tub is rotated. .In addition to the flange $55 for holding the ring 52 there is provided an annular cup-shaped guard or stop device I52 having a horizontal inwardly extending flange I54 adapted to overlie the resilient flange I58 and it is also clamped to the base by the bolts I 42. The outer portion of the stop device I52 is generally shaped to conform to the contour of the outer surface of the ring 52 and flange I50 to support the same when stretched by centrifugal force, as shown in dot and dash lines in Figure 2. This stop prevents the resilient ring from passing through its dead center posi- 8 tion and not returning to its seat when rotation of the tub is terminated.