6mm ID Rubber Flat Washers 19mm OD x 1.6mm Thick Sealing Spacer 6 x 19 x 1.6mm
1/4″ ID Rubber Flat Washers 5/8″ OD x 1/8″ Gasket Sealing Spacer 1/4 x 5/8 x 1/8. 1/4″ ID Rubber Flat Washers 5/8″ OD 1/16″ Thick Gasket Spacer 1/4 x 5/8 x 1/16. 6 x 19 x 1.6mm Round High Quality EPDM Rubber Flat Washers.