Amazon.co.jp: uxcell O Ring 2.0 x 0.8 inches (50 x 20 mm) Black Outer Diameter 0.6 inch (15 mm) ID Nitrile Rubber Oil Seal Gasket : DIY, Tools & Garden
Amazon.co.jp: Uxcell O-Ring Rubber O-Ring O-Gasket Rubber 1.1 x 1.3 x 0.1 inches (29.2 x 34 x 2.4 mm), Pack of 10
53102011 - Lapp Kabel - O Ring Seal, NBR (Nitrile Butadiene Rubber), Black
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