12 to 18 ID X 0.394 (10.00mm) C/S Vulcanized Fluorocarbon Viton® FKM O-Rings 75 Durometer [VV75.394-018] : The O-Ring Store LLC, We make getting O-Rings easy!
Fluorocarbon O-Ring, 75 Shore A, Broad Applicability (Prädifa Series V0747-75) | Parker NA
312 Viton / FKM O-ring 75A Durometer Brown, Sterling Seal and Supply (250 Count) - Walmart.com
Viton Cord FKM FPM Black Rubber O Ring Cord 6mm Diameter Malaysia Supplier
Shop O-Ring, Viton, 28 x 1 mm | 700009614 | Waters