Amazon.com: SUOFEILAIMU-MI CS2.65mm 50PCS Silicone O Ring ID 33.5/34.5/35.5/36.5/40x2.65mm O-Ring VMQ Gasket Seal Thickness 2.65mm White Red Rubber ORing (Size : ID40x2.65mm Red) : Industrial & Scientific
KTM O-ring - 40x2 5mm 0770400025
O-ring 40x2 NBR80
O-ring seal or-40x2.50-nbr90 - 40x45x2.5 mm | 123bearing
O-Ring,Viton,40 X 2 MM, PL23970416 – Chemtech Scientific Incorporated