Stainless Steel Neoprene EPDM Washers 5/16 ID x 3/4 OD (100 Pcs) 18-8: Amazon.com: Industrial & Scientific
Black Rubber Washer Large Rubber Washers 1 1/4" OD x 3/4" ID x 1/8" Thickness - EPDM Rubber Washers Flat Rubber Washers Round Rubber Washers (Pack of 12): Amazon.com: Industrial & Scientific