Search our list of Metric O-Rings. O-Rings included on this list are either included in an International Standard, or measure in even mm increments. If you can't find your O-Ring seal in this group, be sure to check out "All O-Rings".
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Item #

C/S Metric (mm)

ID Metric (mm)

OD Metric (mm)

Std Shrink

Special Shrink

Reference Size

4-4 N/A .10 N/A .10 N/A .30 N/A Yes N/A N/A
5-275SS N/A .13 N/A 7.00 N/A 7.26 N/A Yes N/A N/A
6-275ES N/A .15 N/A 7.00 N/A 7.30 N/A Yes N/A N/A
7-275ES N/A .17 N/A 7.00 N/A 7.34 N/A Yes N/A N/A
8-372 N/A .20 N/A 9.45 N/A 9.85 N/A Yes N/A N/A
10-10 N/A .25 N/A .25 N/A .75 N/A Yes N/A N/A
12-51VS N/A .30 N/A 1.30 N/A 1.90 N/A Yes N/A N/A
12-77VS N/A .30 N/A 2.0 N/A 2.6 N/A Yes N/A N/A
12-145 N/A .30 N/A 3.70 N/A 4.30 N/A Yes N/A N/A
12-158SS N/A .30 N/A 4.00 N/A 4.6 N/A Yes N/A N/A
12-227VS N/A .30 N/A 5.80 N/A 6.40 N/A Yes N/A N/A
12-551VS N/A .30 N/A 14.10 N/A 14.70 N/A Yes N/A N/A
16-28 N/A .40 N/A .70 N/A 1.50 N/A Yes N/A N/A
16-47 N/A .40 N/A 1.20 N/A 2.00 N/A Yes N/A N/A
20-20 N/A .50 N/A .50 N/A 1.50 N/A Yes N/A N/A
20-30 N/A .50 N/A .75 N/A 1.75 N/A Yes N/A N/A
20-66 N/A .50 N/A 1.70 N/A 2.7 N/A Yes N/A N/A
20-87 N/A .50 N/A 2.20 N/A 3.20 N/A Yes N/A N/A
20-90 N/A .50 N/A 2.30 N/A 3.30 N/A Yes N/A N/A
20-98 N/A .50 N/A 2.5 N/A 3.5 N/A Yes N/A N/A
19-102VS N/A .50 N/A 2.6 N/A 3.6 N/A Yes N/A N/A
20-110 N/A .50 N/A 2.80 N/A 3.80 N/A Yes N/A N/A
20-125VS N/A .50 N/A 3.2 N/A 4.2 N/A N/A Yes N/A
20-150 N/A .50 N/A 3.80 N/A 4.80 N/A Yes N/A N/A
20-170 N/A .50 N/A 4.30 N/A 5.30 N/A Yes N/A N/A
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