NBR O-ring 193 x 3mm (OD 199mm) 70 Shore A [5 Pieces] | Tameson.com
Mr O-Ring 1.5X3 Metric Viton O-Ring - 90A Durometer, 3 mm ID, 6 mm OD, 1.5 mm CS, Black (Pack of 100): Amazon.com: Tools & Home Improvement
3mm X 20.5mm (NBR) Buna-N 70 Duro Metric O-Ring [N3.00X020.5-GRN] : The O- Ring Store LLC, We make getting O-Rings easy!
12.5mmID x 18.5mm OD x 3mm thick O-ring. Buna-70. Quan 3. | eBay
uxcell Nitrile Rubber O-Rings 70mm OD 63mm ID 3.5mm Width, Metric Nitrile Rubber Sealing Gasket for Automotive Machine Plumbing, Pack of 5: Amazon.com: Industrial & Scientific
FKM O-Ring 3mm Wire Diameter 10-70mm Out Diameter Seal Ring Heat-Resistant 280°C | eBay
Rubber O Rings Kit 10pcs O Ring Seal Gasket Thickness CS 3mm OD 10~70mm Silicone Rubber Insulated Waterproof Washer Round Shape Red Sealing Gasket (Color : Red, Size : OD 10MM_3MM): Amazon.com: