SMS 1586 O-ring standard specifications (metric)
I learned much of this information from the Gapi S.p.A. and Precision Associates websites.
About the SMS 1586
standard for O-rings
The SMS 1586
standard for O-rings is produced by the Sveriges Mekanstandardisering (Swedish Mechanical Standard). The SMS 1586
specification describes 140 O-rings in two different groups: dynamic and static.
The dynamic group describes 65 O-rings. Each size is designated by its dimension: ID × cross-section.
The static group describes 75 O-rings. Each size is designated by its dimension: ID × cross-section.
In contrast to the AS 568 A inch system, the nominal and physical dimensions of metric O-rings match precisely. That is, a 1 mm O-ring will have a cross-section of 1 mm. The space that is being filled must be about 10% to 15% smaller than the cross-section of the O-ring in order for O-ring to seal properly.
Sizes within the SMS 1586
standard for O-rings (dynamic applications)
| Size reference code | Decimal size in millimeters | Decimal size in inches | ||
|---|---|---|---|---|
| Cross-section | ID | Cross-section | ID | |
| 3.3 × 2.4 (3.3X2.4) | 2.4 mm | 3.3 mm | 0.094 inch | 0.13 inch |
| 4.3 × 2.4 (4.3X2.4) | 2.4 mm | 4.3 mm | 0.094 inch | 0.169 inch |
| 5.3 × 2.4 (5.3X2.4) | 2.4 mm | 5.3 mm | 0.094 inch | 0.209 inch |
| 6.3 × 2.4 (6.3X2.4) | 2.4 mm | 6.3 mm | 0.094 inch | 0.248 inch |
| 7.3 × 2.4 (7.3X2.4) | 2.4 mm | 7.3 mm | 0.094 inch | 0.287 inch |
| 8.3 × 2.4 (8.3X2.4) | 2.4 mm | 8.3 mm | 0.094 inch | 0.327 inch |
| 9.3 × 2.4 (9.3X2.4) | 2.4 mm | 9.3 mm | 0.094 inch | 0.366 inch |
| 10.3 × 2.4 (10.3X2.4) | 2.4 mm | 10.3 mm | 0.094 inch | 0.406 inch |
| 11.3 × 2.4 (11.3X2.4) | 2.4 mm | 11.3 mm | 0.094 inch | 0.4451 inch |
| 12.3 × 2.4 (12.3X2.4) | 2.4 mm | 12.3 mm | 0.094 inch | 0.484 inch |
| 13.3 × 2.4 (13.3X2.4) | 2.4 mm | 13.3 mm | 0.094 inch | 0.524 inch |
| 14.3 × 2.4 (14.3X2.4) | 2.4 mm | 14.3 mm | 0.094 inch | 0.563 inch |
| 15.3 × 2.4 (15.3X2.4) | 2.4 mm | 15.3 mm | 0.094 inch | 0.602 inch |
| 16.3 × 2.4 (16.3X2.4) | 2.4 mm | 16.3 mm | 0.094 inch | 0.642 inch |
| 17.3 × 2.4 (17.3X2.4) | 2.4 mm | 17.3 mm | 0.094 inch | 0.681 inch |
| 19.2 × 3 (19.2X3) | 3 mm | 19.2 mm | 0.118 inch | 0.756 inch |
| 22.2 × 3 (22.2X3) | 3 mm | 22.2 mm | 0.118 inch | 0.874 inch |
| 24.2 × 3 (24.2X3) | 3 mm | 24.2 mm | 0.118 inch | 0.953 inch |
| 26.2 × 3 (26.2X3) | 3 mm | 26.2 mm | 0.118 inch | 1.031 inch |
| 29.2 × 3 (29.2X3) | 3 mm | 29.2 mm | 0.118 inch | 1.15 inch |
| 32.2 × 3 (32.2X3) | 3 mm | 32.2 mm | 0.118 inch | 1.268 inch |
| 34.2 × 3 (34.2X3) | 3 mm | 34.2 mm | 0.118 inch | 1.346 inch |
| 36.2 × 3 (36.2X3) | 3 mm | 36.2 mm | 0.118 inch | 1.425 inch |
| 39.2 × 3 (39.2X3) | 3 mm | 39.2 mm | 0.118 inch | 1.543 inch |
| 42.2 × 3 (42.2X3) | 3 mm | 42.2 mm | 0.118 inch | 1.661 inch |
| 44.2 × 3 (44.2X3) | 3 mm | 44.2 mm | 0.118 inch | 1.74 inch |
| 44.2 × 5.7 (44.2X5.7) | 5.7 mm | 44.2 mm | 0.224 inch | 1.74 inch |
| 49.2 × 5.7 (49.2X5.7) | 5.7 mm | 49.2 mm | 0.224 inch | 1.937 inch |
| 49.3 × 5.7 (49.3X5.7) | 5.7 mm | 49.3 mm | 0.224 inch | 1.941 inch |
| 54.2 × 5.7 (54.2X5.7) | 5.7 mm | 54.2 mm | 0.224 inch | 2.134 inch |
| 59.2 × 5.7 (59.2X5.7) | 5.7 mm | 59.2 mm | 0.224 inch | 2.331 inch |
| 64.2 × 5.7 (64.2X5.7) | 5.7 mm | 64.2 mm | 0.224 inch | 2.528 inch |
| 69.2 × 5.7 (69.2X5.7) | 5.7 mm | 69.2 mm | 0.224 inch | 2.724 inch |
| 74.2 × 5.7 (74.2X5.7) | 5.7 mm | 74.2 mm | 0.224 inch | 2.921 inch |
| 79.2 × 5.7 (79.2X5.7) | 5.7 mm | 79.2 mm | 0.224 inch | 3.118 inch |
| 84.1 × 5.7 (84.1X5.7) | 5.7 mm | 84.1 mm | 0.224 inch | 3.311 inch |
| 89.1 × 5.7 (89.1X5.7) | 5.7 mm | 89.1 mm | 0.224 inch | 3.508 inch |
| 94.1 × 5.7 (94.1X5.7) | 5.7 mm | 94.1 mm | 0.224 inch | 3.705 inch |
| 99.1 × 5.7 (99.1X5.7) | 5.7 mm | 99.1 mm | 0.224 inch | 3.902 inch |
| 104.1 × 5.7 (104.1X5.7) | 5.7 mm | 104.1 mm | 0.224 inch | 4.098 inch |
| 109.1 × 5.7 (109.1X5.7) | 5.7 mm | 109.1 mm | 0.224 inch | 4.295 inch |
| 114.3 × 5.7 (114.3X5.7) | 5.7 mm | 114.3 mm | 0.224 inch | 4.5 inch |
| 119.3 × 5.7 (119.3X5.7) | 5.7 mm | 119.3 mm | 0.224 inch | 4.697 inch |
| 124.3 × 5.7 (124.3X5.7) | 5.7 mm | 124.3 mm | 0.224 inch | 4.894 inch |
| 129.3 × 5.7 (129.3X5.7) | 5.7 mm | 129.3 mm | 0.224 inch | 5.091 inch |
| 134.3 × 5.7 (134.3X5.7) | 5.7 mm | 134.3 mm | 0.224 inch | 5.287 inch |
| 139.3 × 5.7 (139.3X5.7) | 5.7 mm | 139.3 mm | 0.224 inch | 5.484 inch |
| 144.3 × 5.7 (144.3X5.7) | 5.7 mm | 144.3 mm | 0.224 inch | 5.681 inch |
| 144.1 × 8.4 (144.1X8.4) | 8.4 mm | 144.1 mm | 0.331 inch | 5.673 inch |
| 149.1 × 8.4 (149.1X8.4) | 8.4 mm | 149.1 mm | 0.331 inch | 5.87 inch |
| 154.1 × 8.4 (154.1X8.4) | 8.4 mm | 154.1 mm | 0.331 inch | 6.067 inch |
| 159.1 × 8.4 (159.1X8.4) | 8.4 mm | 159.1 mm | 0.331 inch | 6.264 inch |
| 164.1 × 8.4 (164.1X8.4) | 8.4 mm | 164.1 mm | 0.331 inch | 6.461 inch |
| 169.1 × 8.4 (169.1X8.4) | 8.4 mm | 169.1 mm | 0.331 inch | 6.657 inch |
| 174.1 × 8.4 (174.1X8.4) | 8.4 mm | 174.1 mm | 0.331 inch | 6.854 inch |
| 179.1 × 8.4 (179.1X8.4) | 8.4 mm | 179.1 mm | 0.331 inch | 7.051 inch |
| 184.1 × 8.4 (184.1X8.4) | 8.4 mm | 184.1 mm | 0.331 inch | 7.248 inch |
| 189.1 × 8.4 (189.1X8.4) | 8.4 mm | 189.1 mm | 0.331 inch | 7.445 inch |
| 194.1 × 8.4 (194.1X8.4) | 8.4 mm | 194.1 mm | 0.331 inch | 7.642 inch |
| 199.1 × 8.4 (199.1X8.4) | 8.4 mm | 199.1 mm | 0.331 inch | 7.839 inch |
| 209.1 × 8.4 (209.1X8.4) | 8.4 mm | 209.1 mm | 0.331 inch | 8.232 inch |
| 219.1 × 8.4 (219.1X8.4) | 8.4 mm | 219.1 mm | 0.331 inch | 8.626 inch |
| 229.1 × 8.4 (229.1X8.4) | 8.4 mm | 229.1 mm | 0.331 inch | 9.02 inch |
| 239.1 × 8.4 (239.1X8.4) | 8.4 mm | 239.1 mm | 0.331 inch | 9.413 inch |
| 249.1 × 8.4 (249.1X8.4) | 8.4 mm | 249.1 mm | 0.331 inch | 9.807 inch |
Sizes within the SMS 1586
standard for O-rings (static applications)
| Size reference code | Decimal size in millimeters | Decimal size in inches | ||
|---|---|---|---|---|
| Cross-section | ID | Cross-section | ID | |
| 3.1 × 1.6 (3.1X1.6) | 1.6 mm | 3.1 mm | 0.063 inch | 0.122 inch |
| 4.1 × 1.6 (4.1X1.6) | 1.6 mm | 4.1 mm | 0.063 inch | 0.161 inch |
| 5.1 × 1.6 (5.1X1.6) | 1.6 mm | 5.1 mm | 0.063 inch | 0.201 inch |
| 6.1 × 1.6 (6.1X1.6) | 1.6 mm | 6.1 mm | 0.063 inch | 0.24 inch |
| 7.1 × 1.6 (7.1X1.6) | 1.6 mm | 7.1 mm | 0.063 inch | 0.28 inch |
| 8.1 × 1.6 (8.1X1.6) | 1.6 mm | 8.1 mm | 0.063 inch | 0.319 inch |
| 9.1 × 1.6 (9.1X1.6) | 1.6 mm | 9.1 mm | 0.063 inch | 0.358 inch |
| 10.1 × 1.6 (10.1X1.6) | 1.6 mm | 10.1 mm | 0.063 inch | 0.398 inch |
| 11.1 × 1.6 (11.1X1.6) | 1.6 mm | 11.1 mm | 0.063 inch | 0.437 inch |
| 12.1 × 1.6 (12.1X1.6) | 1.6 mm | 12.1 mm | 0.063 inch | 0.476 inch |
| 13.1 × 1.6 (13.1X1.6) | 1.6 mm | 13.1 mm | 0.063 inch | 0.516 inch |
| 14.1 × 1.6 (14.1X1.6) | 1.6 mm | 14.1 mm | 0.063 inch | 0.555 inch |
| 15.1 × 1.6 (15.1X1.6) | 1.6 mm | 15.1 mm | 0.063 inch | 0.594 inch |
| 16.1 × 1.6 (16.1X1.6) | 1.6 mm | 16.1 mm | 0.063 inch | 0.634 inch |
| 17.1 × 1.6 (17.1X1.6) | 1.6 mm | 17.1 mm | 0.063 inch | 0.673 inch |
| 18.1 × 1.6 (18.1X1.6) | 1.6 mm | 18.1 mm | 0.063 inch | 0.713 inch |
| 19.1 × 1.6 (19.1X1.6) | 1.6 mm | 19.1 mm | 0.063 inch | 0.752 inch |
| 22.1 × 1.6 (22.1X1.6) | 1.6 mm | 22.1 mm | 0.063 inch | 0.87 inch |
| 25.1 × 1.6 (25.1X1.6) | 1.6 mm | 25.1 mm | 0.063 inch | 0.988 inch |
| 27.1 × 1.6 (27.1X1.6) | 1.6 mm | 27.1 mm | 0.063 inch | 1.067 inch |
| 29.1 × 1.6 (29.1X1.6) | 1.6 mm | 29.1 mm | 0.063 inch | 1.146 inch |
| 32.1 × 1.6 (32.1X1.6) | 1.6 mm | 32.1 mm | 0.063 inch | 1.264 inch |
| 35.1 × 1.6 (35.1X1.6) | 1.6 mm | 35.1 mm | 0.063 inch | 1.382 inch |
| 37.1 × 1.6 (37.1X1.6) | 1.6 mm | 37.1 mm | 0.063 inch | 1.461 inch |
| 49.5 × 3 (49.5X3) | 3 mm | 49.5 mm | 0.118 inch | 1.949 inch |
| 54.5 × 3 (54.5X3) | 3 mm | 54.5 mm | 0.118 inch | 2.146 inch |
| 59.5 × 3 (59.5X3) | 3 mm | 59.5 mm | 0.118 inch | 2.343 inch |
| 64.5 × 3 (64.5X3) | 3 mm | 64.5 mm | 0.118 inch | 2.539 inch |
| 69.5 × 3 (69.5X3) | 3 mm | 69.5 mm | 0.118 inch | 2.736 inch |
| 74.5 × 3 (74.5X3) | 3 mm | 74.5 mm | 0.118 inch | 2.933 inch |
| 79.5 × 3 (79.5X3) | 3 mm | 79.5 mm | 0.118 inch | 3.13 inch |
| 84.5 × 3 (84.5X3) | 3 mm | 84.5 mm | 0.118 inch | 3.327 inch |
| 89.5 × 3 (89.5X3) | 3 mm | 89.5 mm | 0.118 inch | 3.524 inch |
| 94.5 × 3 (94.5X3) | 3 mm | 94.5 mm | 0.118 inch | 3.72 inch |
| 99.5 × 3 (99.5X3) | 3 mm | 99.5 mm | 0.118 inch | 3.917 inch |
| 104.5 × 3 (104.5X3) | 3 mm | 104.5 mm | 0.118 inch | 4.114 inch |
| 109.5 × 3 (109.5X3) | 3 mm | 109.5 mm | 0.118 inch | 4.311 inch |
| 114.5 × 3 (114.5X3) | 3 mm | 114.5 mm | 0.118 inch | 4.508 inch |
| 119.5 × 3 (119.5X3) | 3 mm | 119.5 mm | 0.118 inch | 4.705 inch |
| 124.5 × 3 (124.5X3) | 3 mm | 124.5 mm | 0.118 inch | 4.902 inch |
| 129.5 × 3 (129.5X3) | 3 mm | 129.5 mm | 0.118 inch | 5.098 inch |
| 134.5 × 3 (134.5X3) | 3 mm | 134.5 mm | 0.118 inch | 5.295 inch |
| 139.5 × 3 (139.5X3) | 3 mm | 139.5 mm | 0.118 inch | 5.492 inch |
| 144.5 × 3 (144.5X3) | 3 mm | 144.5 mm | 0.118 inch | 5.689 inch |
| 149.3 × 5.7 (149.3X5.7) | 5.7 mm | 149.3 mm | 0.224 inch | 5.878 inch |
| 154.3 × 5.7 (154.3X5.7) | 5.7 mm | 154.3 mm | 0.224 inch | 6.075 inch |
| 159.3 × 5.7 (159.3X5.7) | 5.7 mm | 159.3 mm | 0.224 inch | 6.272 inch |
| 164.3 × 5.7 (164.3X5.7) | 5.7 mm | 164.3 mm | 0.224 inch | 6.468 inch |
| 169.3 × 5.7 (169.3X5.7) | 5.7 mm | 169.3 mm | 0.224 inch | 6.665 inch |
| 174.3 × 5.7 (174.3X5.7) | 5.7 mm | 174.3 mm | 0.224 inch | 6.862 inch |
| 179.3 × 5.7 (179.3X5.7) | 5.7 mm | 179.3 mm | 0.224 inch | 7.059 inch |
| 184.3 × 5.7 (184.3X5.7) | 5.7 mm | 184.3 mm | 0.224 inch | 7.256 inch |
| 189.3 × 5.7 (189.3X5.7) | 5.7 mm | 189.3 mm | 0.224 inch | 7.453 inch |
| 194.3 × 5.7 (194.3X5.7) | 5.7 mm | 194.3 mm | 0.224 inch | 7.65 inch |
| 199.3 × 5.7 (199.3X5.7) | 5.7 mm | 199.3 mm | 0.224 inch | 7.846 inch |
| 209.3 × 5.7 (209.3X5.7) | 5.7 mm | 209.3 mm | 0.224 inch | 8.24 inch |
| 219.3 × 5.7 (219.3X5.7) | 5.7 mm | 219.3 mm | 0.224 inch | 8.634 inch |
| 229.3 × 5.7 (229.3X5.7) | 5.7 mm | 229.3 mm | 0.224 inch | 9.028 inch |
| 239.3 × 5.7 (239.3X5.7) | 5.7 mm | 239.3 mm | 0.224 inch | 9.421 inch |
| 249.3 × 5.7 (249.3X5.7) | 5.7 mm | 249.3 mm | 0.224 inch | 9.815 inch |
| 259.3 × 5.7 (259.3X5.7) | 5.7 mm | 259.3 mm | 0.224 inch | 10.21 inch |
| 269.3 × 5.7 (269.3X5.7) | 5.7 mm | 269.3 mm | 0.224 inch | 10.6 inch |
| 279.3 × 5.7 (279.3X5.7) | 5.7 mm | 279.3 mm | 0.224 inch | 11 inch |
| 289.3 × 5.7 (289.3X5.7) | 5.7 mm | 289.3 mm | 0.224 inch | 11.39 inch |
| 299.3 × 5.7 (299.3X5.7) | 5.7 mm | 299.3 mm | 0.224 inch | 11.783 inch |
| 319.3 × 5.7 (319.3X5.7) | 5.7 mm | 319.3 mm | 0.224 inch | 12.571 inch |
| 339.3 × 5.7 (339.3X5.7) | 5.7 mm | 339.3 mm | 0.224 inch | 13.358 inch |
| 359.3 × 5.7 (359.3X5.7) | 5.7 mm | 359.3 mm | 0.224 inch | 14.146 inch |
| 379.3 × 5.7 (379.3X5.7) | 5.7 mm | 379.3 mm | 0.224 inch | 14.933 inch |
| 399.3 × 5.7 (399.3X5.7) | 5.7 mm | 399.3 mm | 0.224 inch | 15.72 inch |
| 419.3 × 5.7 (419.3X5.7) | 5.7 mm | 419.3 mm | 0.224 inch | 16.508 inch |
| 439.3 × 5.7 (439.3X5.7) | 5.7 mm | 439.3 mm | 0.224 inch | 17.295 inch |
| 459.3 × 5.7 (459.3X5.7) | 5.7 mm | 459.3 mm | 0.224 inch | 18.083 inch |
| 479.3 × 5.7 (479.3X5.7) | 5.7 mm | 479.3 mm | 0.224 inch | 18.87 inch |
| 499.3 × 5.7 (499.3X5.7) | 5.7 mm | 499.3 mm | 0.224 inch | 19.657 inch |