24mm 25mm 26mm 27mm 28mm 29mm 30mm 31mm Inner Diameter ID 2mm Thickness Black EPDM EPM Rubber Grommet Seal Washer O Ring Gasket 24mm 25mm 26mm 27mm 28mm 29mm 30mm 31mm Inner Diameter ID 2mm Thickness Black EPDM EPM Rubber Grommet Seal Washer O Ring Gasket. Sale price : $6.94 Category : Home Improvement