Stainless Steel Neoprene EPDM Washers 5/16 ID x 3/4 OD (100 Pcs) 18-8: Amazon.com: Industrial & Scientific
Kst North America #14 x 5/8" Conical Spring Bondwell Washer 2mm EPDM Stainless Steel 100 Pcs. - Walmart.com
27/30/33/36/39mm Metal Rubber Bonded O-ring Seal Washer Fit M27/M30/M33/M36/M39 Oil Drain Plug Gasket Ring Prevent Oil Leakage - AliExpress
Stainless Rubber (EPDM) Bonded Washers | The Nutty Company, Inc.
10Pcs Rubber Metal Bonded Washer Seal O Ring Drain Plug Gasket 14mm ID. 20mm OD. | eBay
14 x 3/4" Neoprene EPDM Bonded Sealing Rubber Washers, Stainless Steel 18-8 (304), Pack of 40: Amazon.com: Industrial & Scientific
1/4" x 1" Stainless Steel EPDM Bonded Sealing Washers (50 Pack), 1" OD Neoprene Backed Corrosion Resistant Load Distribution Water Tight Seal by Bolt Dropper: Amazon.com: Industrial & Scientific