O-Ring Schnurstärke 2,0 mm günstig bei Erkaflex.de, 0,39 €
Amazon.com: uxcell Nitrile Rubber O-Rings, 50mm OD 44mm ID 3mm Width, Metric Sealing Gasket, Pack of 10 : Automotive
IR Dichtungstechnik - O-Ring 50,0 x 3,5 mm NBR 70 +/- 5 Shore A schwarz/black
High Temperature Resistance Standard and Custom Size O-Ring NBR Nitrile FKM FPM Silicone Mvq HNBR EPDM PU Ffkm 50/55/70/75/90 Shore a Rubber Oring - China O Ring, O-Ring | Made-in-China.com