18X1 Oring 18mm ID X 1mm CS NBR Nitrile Acrylonitrile Butadiene IRHD 70 Black O ring Oring Sealing O ring Rubber|o rings rubber|ring rubberseal o ring - AliExpress
ARRMA O-Ring 18x1.2mm: Nero (4) | Tower Hobbies
Dornbracht O-Ring 18 x 1,5 NBR70 I. 09141014090 20x20x1
Ascaso group O ring
O-ring seal or-18x1.80-nbr70 - 18x21.6x1.8 mm | 123bearing - 123bearin