uxcell Nitrile Rubber O-Rings 200mm OD 190mm ID 5mm Width, Metric Buna-N Sealing Gasket, Pack of 1: Amazon.com: Industrial & Scientific
Amazon.com: uxcell Nitrile Rubber O-Rings 200mm OD 193mm ID 3.5mm Width, Metric Buna-N Sealing Gasket, Pack of 10 : Industrial & Scientific
Amazon.com: 200pcs 4mm (0.16 Inch) Small Open Jump Ring O Ring Connector (Wire - 0.9mm/0.035 inch/19 Gauge) Antique Bronze Plated Brass for Jewelry Craft Making CF85-4
Amazon.com : iShoot CNC Tripod Mount Ring, 76mm Aviation Aluminum Lens Collar Stand for Tamron SP 70-200mm f/2.8 Di VC USD G2 Lens (of Nikon F and Canon EF Mount), Built-in Arca-Swiss
Amazon.com: 10/50Pcs * VMQ White Silicone O Ring Gasket Thickness 1.5mm OD 5~60mm High Grade Rubber Insulate Round O Shape Seal O-Ring (Size : OD 37mm (10pcs), Thickness : 1.5mm) : Industrial