Military Specification M25988/4-224 O-Ring at SkyGeek.com
Amazon.com: YINGJUN CS7mm 2Pcs FKM Rubber O Ring ID 224/230/43/250/258/265x7mm O-Ring Fluorine Gasket Oil Seal Green ORing Ring Gasket (Size : ID224x7mm) : Industrial & Scientific
Arctic Cat 3003-224 O-Ring
Military Standard MS29561-224 O-Ring at SkyGeek.com
Buna O-rings # 224-90D Minimum 10 pcs - OringsandMore
Cs5.3mm Fkm Rubber O Ring Id 218/224/230/236/240/243/245*5.3 Mm 2pcs O-ring Fluorine Gasket Oil Seal Green Oring - Gaskets - AliExpress