ISO 6149 Metric O-Rings Size Chart

ISO 6149 specifies O-Rings designed for use in Metric Tube Fittings. This standard includes 13 different sizes and calls out the metric thread size for each o-ring size.

For a complete listing of all metric o-ring sizes, visit our Metric O-Ring Cross Reference Table.

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ISO 6149 Size Chart

Global Part # Reference C/S (MM) I.D. (MM) C/S (Inch) I.D. (Inch)
1.60X006.1 M8 X 1 1.6 6.1 0.063 0.24
1.60X008.1 M10 X 1 1.6 8.1 0.063 0.319
2.20X009.3 M12 X 1.5 2.2 9.3 0.087 0.366
2.20X011.3 M14 X 1.5 2.2 11.3 0.087 0.445
2.20X013.3 M16 X 1.5 2.2 13.3 0.087 0.524
2.20X015.3 M18 X 1.5 2.2 15.3 0.087 0.602
2.20X017.3 M20 X 1.5 2.2 17.3 0.087 0.681
2.20X019.3 M22 X 1.5 2.2 19.3 0.087 0.76
2.90X023.6 M27 X 2 2.9 23.6 0.114 0.929
2.90X029.6 M33 X 2 2.9 29.6 0.114 1.165
2.90X038.6 M42 X 2 2.9 38.6 0.114 1.52
2.90X044.6 M48 X 2 2.9 44.6 0.114 1.756
2.90X056.6 M60 X 2 2.9 56.6 0.114 2.228