Rubber O Rings Kit 10pcs O Ring Seal Gasket Thickness CS 3mm OD 10~70mm Silicone Rubber Insulated Waterproof Washer Round Shape Red Sealing Gasket (Color : Red, Size : OD 10MM_3MM): Amazon.com:
NBR O-ring 193 x 3mm (OD 199mm) 70 Shore A [5 Pieces] | Tameson.com
3mm Wire Diameter Food Grade Silicone O-Ring 10mm To 70mm OD Red O Rings Seals | eBay