Gregory Bender

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 codeDecimal size in millimetersDecimal size in inches
Cross-sectionIDCross-sectionID
3.3 × 2.4 (3.3X2.4)2.4 mm3.3 mm0.094 inch0.13 inch
4.3 × 2.4 (4.3X2.4)2.4 mm4.3 mm0.094 inch0.169 inch
5.3 × 2.4 (5.3X2.4)2.4 mm5.3 mm0.094 inch0.209 inch
6.3 × 2.4 (6.3X2.4)2.4 mm6.3 mm0.094 inch0.248 inch
7.3 × 2.4 (7.3X2.4)2.4 mm7.3 mm0.094 inch0.287 inch
8.3 × 2.4 (8.3X2.4)2.4 mm8.3 mm0.094 inch0.327 inch
9.3 × 2.4 (9.3X2.4)2.4 mm9.3 mm0.094 inch0.366 inch
10.3 × 2.4 (10.3X2.4)2.4 mm10.3 mm0.094 inch0.406 inch
11.3 × 2.4 (11.3X2.4)2.4 mm11.3 mm0.094 inch0.4451 inch
12.3 × 2.4 (12.3X2.4)2.4 mm12.3 mm0.094 inch0.484 inch
13.3 × 2.4 (13.3X2.4)2.4 mm13.3 mm0.094 inch0.524 inch
14.3 × 2.4 (14.3X2.4)2.4 mm14.3 mm0.094 inch0.563 inch
15.3 × 2.4 (15.3X2.4)2.4 mm15.3 mm0.094 inch0.602 inch
16.3 × 2.4 (16.3X2.4)2.4 mm16.3 mm0.094 inch0.642 inch
17.3 × 2.4 (17.3X2.4)2.4 mm17.3 mm0.094 inch0.681 inch
19.2 × 3 (19.2X3)3 mm19.2 mm0.118 inch0.756 inch
22.2 × 3 (22.2X3)3 mm22.2 mm0.118 inch0.874 inch
24.2 × 3 (24.2X3)3 mm24.2 mm0.118 inch0.953 inch
26.2 × 3 (26.2X3)3 mm26.2 mm0.118 inch1.031 inch
29.2 × 3 (29.2X3)3 mm29.2 mm0.118 inch1.15 inch
32.2 × 3 (32.2X3)3 mm32.2 mm0.118 inch1.268 inch
34.2 × 3 (34.2X3)3 mm34.2 mm0.118 inch1.346 inch
36.2 × 3 (36.2X3)3 mm36.2 mm0.118 inch1.425 inch
39.2 × 3 (39.2X3)3 mm39.2 mm0.118 inch1.543 inch
42.2 × 3 (42.2X3)3 mm42.2 mm0.118 inch1.661 inch
44.2 × 3 (44.2X3)3 mm44.2 mm0.118 inch1.74 inch
44.2 × 5.7 (44.2X5.7)5.7 mm44.2 mm0.224 inch1.74 inch
49.2 × 5.7 (49.2X5.7)5.7 mm49.2 mm0.224 inch1.937 inch
49.3 × 5.7 (49.3X5.7)5.7 mm49.3 mm0.224 inch1.941 inch
54.2 × 5.7 (54.2X5.7)5.7 mm54.2 mm0.224 inch2.134 inch
59.2 × 5.7 (59.2X5.7)5.7 mm59.2 mm0.224 inch2.331 inch
64.2 × 5.7 (64.2X5.7)5.7 mm64.2 mm0.224 inch2.528 inch
69.2 × 5.7 (69.2X5.7)5.7 mm69.2 mm0.224 inch2.724 inch
74.2 × 5.7 (74.2X5.7)5.7 mm74.2 mm0.224 inch2.921 inch
79.2 × 5.7 (79.2X5.7)5.7 mm79.2 mm0.224 inch3.118 inch
84.1 × 5.7 (84.1X5.7)5.7 mm84.1 mm0.224 inch3.311 inch
89.1 × 5.7 (89.1X5.7)5.7 mm89.1 mm0.224 inch3.508 inch
94.1 × 5.7 (94.1X5.7)5.7 mm94.1 mm0.224 inch3.705 inch
99.1 × 5.7 (99.1X5.7)5.7 mm99.1 mm0.224 inch3.902 inch
104.1 × 5.7 (104.1X5.7)5.7 mm104.1 mm0.224 inch4.098 inch
109.1 × 5.7 (109.1X5.7)5.7 mm109.1 mm0.224 inch4.295 inch
114.3 × 5.7 (114.3X5.7)5.7 mm114.3 mm0.224 inch4.5 inch
119.3 × 5.7 (119.3X5.7)5.7 mm119.3 mm0.224 inch4.697 inch
124.3 × 5.7 (124.3X5.7)5.7 mm124.3 mm0.224 inch4.894 inch
129.3 × 5.7 (129.3X5.7)5.7 mm129.3 mm0.224 inch5.091 inch
134.3 × 5.7 (134.3X5.7)5.7 mm134.3 mm0.224 inch5.287 inch
139.3 × 5.7 (139.3X5.7)5.7 mm139.3 mm0.224 inch5.484 inch
144.3 × 5.7 (144.3X5.7)5.7 mm144.3 mm0.224 inch5.681 inch
144.1 × 8.4 (144.1X8.4)8.4 mm144.1 mm0.331 inch5.673 inch
149.1 × 8.4 (149.1X8.4)8.4 mm149.1 mm0.331 inch5.87 inch
154.1 × 8.4 (154.1X8.4)8.4 mm154.1 mm0.331 inch6.067 inch
159.1 × 8.4 (159.1X8.4)8.4 mm159.1 mm0.331 inch6.264 inch
164.1 × 8.4 (164.1X8.4)8.4 mm164.1 mm0.331 inch6.461 inch
169.1 × 8.4 (169.1X8.4)8.4 mm169.1 mm0.331 inch6.657 inch
174.1 × 8.4 (174.1X8.4)8.4 mm174.1 mm0.331 inch6.854 inch
179.1 × 8.4 (179.1X8.4)8.4 mm179.1 mm0.331 inch7.051 inch
184.1 × 8.4 (184.1X8.4)8.4 mm184.1 mm0.331 inch7.248 inch
189.1 × 8.4 (189.1X8.4)8.4 mm189.1 mm0.331 inch7.445 inch
194.1 × 8.4 (194.1X8.4)8.4 mm194.1 mm0.331 inch7.642 inch
199.1 × 8.4 (199.1X8.4)8.4 mm199.1 mm0.331 inch7.839 inch
209.1 × 8.4 (209.1X8.4)8.4 mm209.1 mm0.331 inch8.232 inch
219.1 × 8.4 (219.1X8.4)8.4 mm219.1 mm0.331 inch8.626 inch
229.1 × 8.4 (229.1X8.4)8.4 mm229.1 mm0.331 inch9.02 inch
239.1 × 8.4 (239.1X8.4)8.4 mm239.1 mm0.331 inch9.413 inch
249.1 × 8.4 (249.1X8.4)8.4 mm249.1 mm0.331 inch9.807 inch

Sizes within the SMS 1586 standard for O-rings (static applications)

Size reference codeDecimal size in millimetersDecimal size in inches
Cross-sectionIDCross-sectionID
3.1 × 1.6 (3.1X1.6)1.6 mm3.1 mm0.063 inch0.122 inch
4.1 × 1.6 (4.1X1.6)1.6 mm4.1 mm0.063 inch0.161 inch
5.1 × 1.6 (5.1X1.6)1.6 mm5.1 mm0.063 inch0.201 inch
6.1 × 1.6 (6.1X1.6)1.6 mm6.1 mm0.063 inch0.24 inch
7.1 × 1.6 (7.1X1.6)1.6 mm7.1 mm0.063 inch0.28 inch
8.1 × 1.6 (8.1X1.6)1.6 mm8.1 mm0.063 inch0.319 inch
9.1 × 1.6 (9.1X1.6)1.6 mm9.1 mm0.063 inch0.358 inch
10.1 × 1.6 (10.1X1.6)1.6 mm10.1 mm0.063 inch0.398 inch
11.1 × 1.6 (11.1X1.6)1.6 mm11.1 mm0.063 inch0.437 inch
12.1 × 1.6 (12.1X1.6)1.6 mm12.1 mm0.063 inch0.476 inch
13.1 × 1.6 (13.1X1.6)1.6 mm13.1 mm0.063 inch0.516 inch
14.1 × 1.6 (14.1X1.6)1.6 mm14.1 mm0.063 inch0.555 inch
15.1 × 1.6 (15.1X1.6)1.6 mm15.1 mm0.063 inch0.594 inch
16.1 × 1.6 (16.1X1.6)1.6 mm16.1 mm0.063 inch0.634 inch
17.1 × 1.6 (17.1X1.6)1.6 mm17.1 mm0.063 inch0.673 inch
18.1 × 1.6 (18.1X1.6)1.6 mm18.1 mm0.063 inch0.713 inch
19.1 × 1.6 (19.1X1.6)1.6 mm19.1 mm0.063 inch0.752 inch
22.1 × 1.6 (22.1X1.6)1.6 mm22.1 mm0.063 inch0.87 inch
25.1 × 1.6 (25.1X1.6)1.6 mm25.1 mm0.063 inch0.988 inch
27.1 × 1.6 (27.1X1.6)1.6 mm27.1 mm0.063 inch1.067 inch
29.1 × 1.6 (29.1X1.6)1.6 mm29.1 mm0.063 inch1.146 inch
32.1 × 1.6 (32.1X1.6)1.6 mm32.1 mm0.063 inch1.264 inch
35.1 × 1.6 (35.1X1.6)1.6 mm35.1 mm0.063 inch1.382 inch
37.1 × 1.6 (37.1X1.6)1.6 mm37.1 mm0.063 inch1.461 inch
49.5 × 3 (49.5X3)3 mm49.5 mm0.118 inch1.949 inch
54.5 × 3 (54.5X3)3 mm54.5 mm0.118 inch2.146 inch
59.5 × 3 (59.5X3)3 mm59.5 mm0.118 inch2.343 inch
64.5 × 3 (64.5X3)3 mm64.5 mm0.118 inch2.539 inch
69.5 × 3 (69.5X3)3 mm69.5 mm0.118 inch2.736 inch
74.5 × 3 (74.5X3)3 mm74.5 mm0.118 inch2.933 inch
79.5 × 3 (79.5X3)3 mm79.5 mm0.118 inch3.13 inch
84.5 × 3 (84.5X3)3 mm84.5 mm0.118 inch3.327 inch
89.5 × 3 (89.5X3)3 mm89.5 mm0.118 inch3.524 inch
94.5 × 3 (94.5X3)3 mm94.5 mm0.118 inch3.72 inch
99.5 × 3 (99.5X3)3 mm99.5 mm0.118 inch3.917 inch
104.5 × 3 (104.5X3)3 mm104.5 mm0.118 inch4.114 inch
109.5 × 3 (109.5X3)3 mm109.5 mm0.118 inch4.311 inch
114.5 × 3 (114.5X3)3 mm114.5 mm0.118 inch4.508 inch
119.5 × 3 (119.5X3)3 mm119.5 mm0.118 inch4.705 inch
124.5 × 3 (124.5X3)3 mm124.5 mm0.118 inch4.902 inch
129.5 × 3 (129.5X3)3 mm129.5 mm0.118 inch5.098 inch
134.5 × 3 (134.5X3)3 mm134.5 mm0.118 inch5.295 inch
139.5 × 3 (139.5X3)3 mm139.5 mm0.118 inch5.492 inch
144.5 × 3 (144.5X3)3 mm144.5 mm0.118 inch5.689 inch
149.3 × 5.7 (149.3X5.7)5.7 mm149.3 mm0.224 inch5.878 inch
154.3 × 5.7 (154.3X5.7)5.7 mm154.3 mm0.224 inch6.075 inch
159.3 × 5.7 (159.3X5.7)5.7 mm159.3 mm0.224 inch6.272 inch
164.3 × 5.7 (164.3X5.7)5.7 mm164.3 mm0.224 inch6.468 inch
169.3 × 5.7 (169.3X5.7)5.7 mm169.3 mm0.224 inch6.665 inch
174.3 × 5.7 (174.3X5.7)5.7 mm174.3 mm0.224 inch6.862 inch
179.3 × 5.7 (179.3X5.7)5.7 mm179.3 mm0.224 inch7.059 inch
184.3 × 5.7 (184.3X5.7)5.7 mm184.3 mm0.224 inch7.256 inch
189.3 × 5.7 (189.3X5.7)5.7 mm189.3 mm0.224 inch7.453 inch
194.3 × 5.7 (194.3X5.7)5.7 mm194.3 mm0.224 inch7.65 inch
199.3 × 5.7 (199.3X5.7)5.7 mm199.3 mm0.224 inch7.846 inch
209.3 × 5.7 (209.3X5.7)5.7 mm209.3 mm0.224 inch8.24 inch
219.3 × 5.7 (219.3X5.7)5.7 mm219.3 mm0.224 inch8.634 inch
229.3 × 5.7 (229.3X5.7)5.7 mm229.3 mm0.224 inch9.028 inch
239.3 × 5.7 (239.3X5.7)5.7 mm239.3 mm0.224 inch9.421 inch
249.3 × 5.7 (249.3X5.7)5.7 mm249.3 mm0.224 inch9.815 inch
259.3 × 5.7 (259.3X5.7)5.7 mm259.3 mm0.224 inch10.21 inch
269.3 × 5.7 (269.3X5.7)5.7 mm269.3 mm0.224 inch10.6 inch
279.3 × 5.7 (279.3X5.7)5.7 mm279.3 mm0.224 inch11 inch
289.3 × 5.7 (289.3X5.7)5.7 mm289.3 mm0.224 inch11.39 inch
299.3 × 5.7 (299.3X5.7)5.7 mm299.3 mm0.224 inch11.783 inch
319.3 × 5.7 (319.3X5.7)5.7 mm319.3 mm0.224 inch12.571 inch
339.3 × 5.7 (339.3X5.7)5.7 mm339.3 mm0.224 inch13.358 inch
359.3 × 5.7 (359.3X5.7)5.7 mm359.3 mm0.224 inch14.146 inch
379.3 × 5.7 (379.3X5.7)5.7 mm379.3 mm0.224 inch14.933 inch
399.3 × 5.7 (399.3X5.7)5.7 mm399.3 mm0.224 inch15.72 inch
419.3 × 5.7 (419.3X5.7)5.7 mm419.3 mm0.224 inch16.508 inch
439.3 × 5.7 (439.3X5.7)5.7 mm439.3 mm0.224 inch17.295 inch
459.3 × 5.7 (459.3X5.7)5.7 mm459.3 mm0.224 inch18.083 inch
479.3 × 5.7 (479.3X5.7)5.7 mm479.3 mm0.224 inch18.87 inch
499.3 × 5.7 (499.3X5.7)5.7 mm499.3 mm0.224 inch19.657 inch