HYXXYY 304 Seamless Welding Stainless Steel Rings 3" Metal O-Ring, Heavy Duty Smooth Solid Multi-Purpose Ring for Crafts, 5/16" x 2.36" (8mm x 60mm), 2 Pack: Amazon.com: Tools & Home Improvement
53mm ID x 60mm OD x 3.5mm CS Nitrile Butadiene Rubber O-Ring 20 Pcs – Gavantools