20pcs 60mm*50mm*5mm Black Nbr O-rings - Gaskets - AliExpress
O-Rings NBR Nitrile Rubber O Ring Seals Gaskets 5mm-50mm OD, 1,5/2/3mm Thickness | eBay
10pcs x Black 55mm OD 50mm Inner Dia Nitrile Rubber O-ring Oil Seal Gaskets
X AUTOHAUX Silicone O-Rings, 50mm OD 43.8mm ID 3.1mm Width VMQ Seal Gasket for Compressor Valves Pipe Repair, White, Pack of 10: Amazon.com: Industrial & Scientific
Lauter Tun Shaft Seal 50mm, Gasket and O-ring - Deutsche Beverage Parts
20Pcs Rubber O-Ring ID 1.8mm to 50mm Select Variations 1.8mm Cross Section | eBay
Bondage Hardware 50mm rings
Amazon.com: 12 Pcs Silver Multi-Purpose Metal O Ring Non-Welded O Ring for DIY Accessories Hardware Bags Ring,Dream Catcher and Crafts,2 inch/50mm
O' Ring 50mm
Flat O Rings 19-50mm Silver O Rings Metal O Buckle Belt Strap - Etsy