Precision Associates, Inc.
Precision Associates, Inc.
3800 North Washington Ave.
Minneapolis, MN 55412-2142
Toll Free: 1-800-394-6590
Local: +1 612-333-7464
Sales: +1 612-334-9190
Fax: 612-342-2417
Email: [email protected]
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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".
O-Ring Picture
Unit of Measure
1 2 3 4 

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
20-248 N/A .50 N/A 6.30 N/A 7.30 N/A Yes N/A N/A
20-305 N/A .50 N/A 7.75 N/A 8.75 N/A Yes N/A N/A
20-311VS N/A .50 N/A 8.0 N/A 9.0 N/A Yes N/A N/A
20-354VS N/A .50 N/A 9.00 N/A 10.0 N/A Yes N/A N/A
20-433VS N/A .50 N/A 11.10 N/A 12.1 N/A Yes N/A N/A
20-515 N/A .50 N/A 13.1 N/A 14.10 N/A Yes N/A N/A
20-583ES N/A .50 N/A 14.90 N/A 15.90 N/A Yes N/A N/A
20-595 N/A .50 N/A 15.10 N/A 16.10 N/A Yes N/A N/A
24-55SS N/A .60 N/A 1.40 N/A 2.6 N/A Yes N/A Yes N/A
24-78SS N/A .60 N/A 2.0 N/A 3.20 N/A Yes N/A N/A
24-169 N/A .60 N/A 4.30 N/A 5.50 N/A Yes N/A N/A
24-205 N/A .60 N/A 5.20 N/A 6.40 N/A Yes N/A N/A
24-472 N/A .60 N/A 12.00 N/A 13.20 N/A Yes N/A N/A
24-945 N/A .60 N/A 24 N/A 25.20 N/A Yes N/A N/A
27-32 N/A .70 N/A .80 N/A 2.20 N/A Yes N/A N/A
27-59VS N/A .70 N/A 1.50 N/A 2.90 N/A Yes N/A N/A
28-94 N/A .70 N/A 2.40 N/A 3.80 N/A Yes N/A N/A
28-110 N/A .70 N/A 2.80 N/A 4.2 N/A Yes N/A N/A
27-143 N/A .70 N/A 3.60 N/A 5.0 N/A Yes N/A N/A
28-201 N/A .70 N/A 5.10 N/A 5.50 N/A Yes N/A N/A
28-210SS N/A .70 N/A 5.40 N/A 6.80 N/A Yes N/A N/A
28-320VS N/A .70 N/A 8.20 N/A 9.60 N/A Yes N/A N/A
28-346VS N/A .70 N/A 8.9 N/A 10.3 N/A Yes N/A N/A
28-347VS N/A .70 N/A 8.9 N/A 10.3 N/A N/A Yes N/A
28-1.181 N/A .70 N/A 30.0 N/A 31.40 N/A Yes N/A N/A
28-7.717NS N/A .70 N/A 196.00 N/A 197.40 N/A Yes N/A N/A
30-157VS N/A .75 N/A 4.00 N/A 5.50 N/A Yes N/A N/A
30-199ES N/A .75 N/A 5.00 N/A 6.50 N/A Yes N/A N/A
30-228VS N/A .75 N/A 5.80 N/A 7.30 N/A Yes N/A N/A
29-1.620SS N/A .75 N/A 41.50 N/A 44.90 N/A Yes N/A N/A
29-1.692SS N/A .75 N/A 43.40 N/A 44.90 N/A Yes N/A N/A
31-31ES N/A .80 N/A .80 N/A 2.40 N/A Yes N/A N/A
32-39 N/A .80 N/A 1.00 N/A 2.6 N/A Yes N/A N/A
31-43 N/A .80 N/A 1.10 N/A 2.7 N/A Yes N/A N/A
32-44VS N/A .80 N/A 1.10 N/A 2.7 N/A N/A Yes N/A
31-47 N/A .80 N/A 1.20 N/A 2.80 N/A Yes N/A N/A
32-55 N/A .80 N/A 1.40 N/A 3.00 N/A Yes N/A N/A
31-67SS N/A .80 N/A 1.70 N/A 3.30 N/A Yes N/A N/A
32-133SS N/A .80 N/A 3.4 N/A 5.0 N/A N/A Yes N/A
31-146 N/A .80 N/A 3.70 N/A 5.30 N/A Yes N/A N/A
32-154 N/A .80 N/A 3.90 N/A 5.50 N/A Yes N/A N/A
32-160VS N/A .80 N/A 4.1 N/A 5.7 N/A N/A Yes N/A
71-178 N/A .80 N/A 4.50 N/A 8.10 N/A Yes N/A N/A
31-187 N/A .80 N/A 4.75 N/A 6.35 N/A Yes N/A N/A
32-220 N/A .80 N/A 5.60 N/A 7.20 N/A Yes N/A N/A
32-253VS N/A .80 N/A 6.50 N/A 8.10 N/A Yes N/A N/A
31-378VS N/A .80 N/A 9.7 N/A 11.3 N/A N/A Yes N/A
31-410 N/A .80 N/A 10.40 N/A 12.00 N/A Yes N/A N/A
32-409SS N/A .80 N/A 10.50 N/A 12.1 N/A Yes N/A N/A
31-409SS N/A .80 N/A 10.50 N/A 12.1 N/A Yes N/A N/A
31-539SS N/A .80 N/A 13.80 N/A 15.40 N/A Yes N/A N/A
32-566VS N/A .80 N/A 14.50 N/A 16.10 N/A Yes N/A N/A
31-779 N/A .80 N/A 19.80 N/A 21.40 N/A Yes N/A N/A
31-898 N/A .80 N/A 22.80 N/A 24.40 N/A Yes N/A N/A
32-1.039 N/A .80 N/A 26.40 N/A 28.00 N/A Yes N/A N/A
31-1.071 N/A .80 N/A 27.20 N/A 28.80 N/A Yes N/A N/A
31-1.226ES N/A .80 N/A 31.30 N/A 32.90 N/A Yes N/A N/A
31-1.331 N/A .80 N/A 33.80 N/A 35.40 N/A Yes N/A N/A
32-1.559SS N/A .80 N/A 40 N/A 41.60 N/A Yes N/A N/A
31-1.718 N/A .80 N/A 43.80 N/A 45.40 N/A Yes N/A N/A
31-1.895SS N/A .80 N/A 48.90 N/A 50.50 N/A Yes N/A N/A
31-2.200VS N/A .80 N/A 56.40 N/A 58.00 N/A Yes N/A N/A
32-2.284SS N/A .80 N/A 58.60 N/A 60.20 N/A Yes N/A N/A
36-47 N/A .90 N/A 1.20 N/A 3.00 N/A Yes N/A N/A
35-55 VS N/A .90 N/A 1.40 N/A 3.20 N/A Yes N/A N/A
35-59VS N/A .90 N/A 1.50 N/A 3.30 N/A Yes N/A N/A
35-75 N/A .90 N/A 1.90 N/A 3.70 N/A Yes N/A N/A
36-125 N/A .90 N/A 3.2 N/A 5.0 N/A Yes N/A N/A
35-130 N/A .90 N/A 3.30 N/A 5.10 N/A Yes N/A N/A
36-138 N/A .90 N/A 3.50 N/A 5.30 N/A Yes N/A N/A
35-182VS N/A .90 N/A 4.60 N/A 6.40 N/A N/A Yes N/A
35-301VS N/A .90 N/A 7.7 N/A 9.5 N/A N/A Yes N/A
35-307ES N/A .90 N/A 7.80 N/A 9.60 N/A Yes N/A N/A
36-312SS N/A .90 N/A 8.0 N/A 9.80 N/A Yes N/A N/A
35-318VS N/A .90 N/A 8.1 N/A 9.90 N/A N/A Yes N/A
35-318VS N/A .90 N/A 8.20 N/A 10.0 N/A Yes N/A N/A
35-426 N/A .90 N/A 10.80 N/A 12.60 N/A Yes N/A N/A
36-465 N/A .90 N/A 11.80 N/A 13.60 N/A Yes N/A N/A
35-512SS N/A .90 N/A 13.1 N/A 14.90 N/A Yes N/A N/A
40-23 N/A 1.00 N/A .60 N/A 2.6 N/A Yes N/A N/A
39-79 N/A 1.00 N/A 2.0 N/A 4.00 N/A Yes N/A N/A
40-87 N/A 1.00 N/A 2.20 N/A 4.2 N/A Yes N/A N/A
39-91ES N/A 1.00 N/A 2.30 N/A 4.30 N/A N/A Yes N/A
40-117 N/A 1.00 N/A 3.00 N/A 5.0 N/A Yes N/A N/A
40-118VS N/A 1.00 N/A 3.00 N/A 5.0 N/A N/A Yes N/A
39-150SS N/A 1.00 N/A 3.80 N/A 5.80 N/A N/A Yes N/A
39-157NS N/A 1.00 N/A 4.00 N/A 6.00 N/A Yes N/A N/A
40-162 N/A 1.00 N/A 4.1 N/A 6.10 N/A Yes N/A N/A
40-176 N/A 1.00 N/A 4.50 N/A 6.50 N/A Yes N/A N/A
40-180 N/A 1.00 N/A 4.60 N/A 6.60 N/A Yes N/A N/A
40-184SS N/A 1.00 N/A 4.70 N/A 6.70 N/A Yes N/A N/A
39-189SS N/A 1.00 N/A 4.80 N/A 6.80 N/A N/A Yes N/A
39-197ES N/A 1.00 N/A 5.00 N/A 7.00 N/A N/A Yes N/A
40-200 N/A 1.00 N/A 5.10 N/A 7.10 N/A Yes N/A N/A
40-228 N/A 1.00 N/A 5.80 N/A 7.80 N/A Yes N/A N/A
39-295 N/A 1.00 N/A 7.50 N/A 9.5 N/A Yes N/A N/A
40-310VS N/A 1.00 N/A 7.90 N/A 9.90 N/A N/A Yes N/A
39-317VS N/A 1.00 N/A 8.1 N/A 10.1 N/A N/A Yes N/A
39-317VS N/A 1.00 N/A 8.1 N/A 10.1 N/A N/A Yes N/A
39-327 N/A 1.00 N/A 8.30 N/A 10.3 N/A Yes N/A N/A
39-354 N/A 1.00 N/A 9.00 N/A 11.00 N/A Yes N/A N/A
40-370 N/A 1.00 N/A 9.40 N/A 11.40 N/A Yes N/A N/A
39-386 N/A 1.00 N/A 9.80 N/A 11.80 N/A Yes N/A N/A
40-395 N/A 1.00 N/A 10.00 N/A 12.00 N/A Yes N/A N/A
40-426 N/A 1.00 N/A 10.80 N/A 12.80 N/A Yes N/A N/A
39-433 N/A 1.00 N/A 11.00 N/A 13.00 N/A Yes N/A N/A
40-440 N/A 1.00 N/A 11.20 N/A 13.20 N/A Yes N/A N/A
40-445SS N/A 1.00 N/A 11.40 N/A 13.40 N/A Yes N/A N/A
39-472 N/A 1.00 N/A 12.00 N/A 14.00 N/A Yes N/A N/A
40-484 N/A 1.00 N/A 12.30 N/A 14.30 N/A Yes N/A N/A
39-492 N/A 1.00 N/A 12.50 N/A 14.50 N/A Yes N/A N/A
40-508NS N/A 1.00 N/A 12.90 N/A 14.90 N/A Yes N/A N/A
39-535 N/A 1.00 N/A 13.60 N/A 15.60 N/A Yes N/A N/A
39-550VS N/A 1.00 N/A 14.0 N/A 16.00 N/A N/A Yes N/A
40-550 N/A 1.00 N/A 14.0 N/A 16.00 N/A Yes N/A N/A
39-570 N/A 1.00 N/A 14.50 N/A 16.50 N/A Yes N/A N/A
39-630 N/A 1.00 N/A 16.00 N/A 18.00 N/A Yes N/A N/A
40-701 N/A 1.00 N/A 17.80 N/A 19.80 N/A Yes N/A N/A
40-725 N/A 1.00 N/A 18.40 N/A 20.40 N/A Yes N/A N/A
40-825 N/A 1.00 N/A 21.00 N/A 23.00 N/A Yes N/A N/A
40-929 N/A 1.00 N/A 23.60 N/A 25.60 N/A Yes N/A N/A
39-945NS N/A 1.00 N/A 24 N/A 26.0 N/A N/A Yes N/A
39-984NS N/A 1.00 N/A 25 N/A 27 N/A N/A Yes N/A
40-1.062 N/A 1.00 N/A 27.00 N/A 29.00 N/A Yes N/A N/A
39-1.063VS N/A 1.00 N/A 27.00 N/A 29.00 N/A N/A Yes N/A
40-1.086 N/A 1.00 N/A 27.60 N/A 29.60 N/A Yes N/A N/A
40-1.105 N/A 1.00 N/A 28.10 N/A 30.10 N/A Yes N/A N/A
40-1.116VS N/A 1.00 N/A 28.60 N/A 30.60 N/A Yes N/A N/A
39-1.189 N/A 1.00 N/A 30.20 N/A 32.20 N/A Yes N/A N/A
40-1.220 N/A 1.00 N/A 31.00 N/A 33.00 N/A Yes N/A N/A
40-1.249VS N/A 1.00 N/A 32.00 N/A 34.00 N/A Yes N/A N/A
40-1.310 N/A 1.00 N/A 33.20 N/A 35.20 N/A Yes N/A N/A
39-1.437 N/A 1.00 N/A 36.50 N/A 38.50 N/A Yes N/A N/A
39-1.476 N/A 1.00 N/A 37.50 N/A 39.50 N/A Yes N/A N/A
40-1.520VS N/A 1.00 N/A 38.60 N/A 40.60 N/A N/A Yes N/A
39-1.574NS N/A 1.00 N/A 40 N/A 42 N/A N/A Yes N/A
39-1.732 N/A 1.00 N/A 44.00 N/A 46.00 N/A Yes N/A N/A
39-1.772SS N/A 1.00 N/A 45.00 N/A 47.00 N/A N/A Yes N/A
39-1.772SS N/A 1.00 N/A 45.40 N/A 47.40 N/A Yes N/A N/A
40-1.828 N/A 1.00 N/A 46.40 N/A 48.40 N/A Yes N/A N/A
39-1.889NS N/A 1.00 N/A 48.0 N/A 50.0 N/A N/A Yes N/A
39-1.969 N/A 1.00 N/A 50.0 N/A 52.00 N/A Yes N/A N/A
39-1.969SS N/A 1.00 N/A 50.0 N/A 52.00 N/A N/A Yes N/A
39-1.969SS N/A 1.00 N/A 50.20 N/A 52.20 N/A Yes N/A N/A
40-2.177 N/A 1.00 N/A 55.30 N/A 57.30 N/A Yes N/A N/A
40-2.249 N/A 1.00 N/A 57.10 N/A 59.10 N/A Yes N/A N/A
40-2.342 N/A 1.00 N/A 59.50 N/A 61.50 N/A Yes N/A N/A
40-2.400 N/A 1.00 N/A 61.00 N/A 63.00 N/A Yes N/A N/A
40-2.875 N/A 1.00 N/A 73.00 N/A 75.00 N/A Yes N/A N/A
40-3.000 N/A 1.00 N/A 76.20 N/A 78.20 N/A Yes N/A N/A
40-3.370VS N/A 1.00 N/A 86.40 N/A 88.40 N/A Yes N/A N/A
43-150 N/A 1.10 N/A 3.80 N/A 6.00 N/A Yes N/A N/A
43-315 N/A 1.10 N/A 8.0 N/A 10.20 N/A Yes N/A N/A
43-495TS N/A 1.10 N/A 12.60 N/A 14.80 N/A Yes N/A N/A
43-642SS N/A 1.10 N/A 16.40 N/A 18.60 N/A Yes N/A N/A
43-1.101 N/A 1.10 N/A 28.00 N/A 30.20 N/A Yes N/A N/A
43-1.101SS N/A 1.10 N/A 28.20 N/A 30.40 N/A Yes N/A N/A
43-1.934 N/A 1.10 N/A 49.10 N/A 51.30 N/A Yes N/A N/A
47-71VS N/A 1.20 N/A 1.90 N/A 4.30 N/A N/A Yes N/A
47-87 N/A 1.20 N/A 2.20 N/A 4.6 N/A Yes N/A N/A
47-114 N/A 1.20 N/A 2.90 N/A 5.30 N/A Yes N/A N/A
46-278VS N/A 1.20 N/A 7.20 N/A 9.60 N/A Yes N/A N/A
47-780SS N/A 1.20 N/A 20.00 N/A 22.40 N/A Yes N/A N/A
47-780SS N/A 1.20 N/A 20.00 N/A 22.40 N/A Yes N/A N/A
46-1.130SS N/A 1.20 N/A 29.20 N/A 31.60 N/A Yes N/A N/A
47-1.245SS N/A 1.20 N/A 31.90 N/A 34.30 N/A Yes N/A N/A
47-1.453 N/A 1.20 N/A 36.90 N/A 39.30 N/A Yes N/A N/A
47-1.575 N/A 1.20 N/A 40 N/A 42.40 N/A Yes N/A N/A
47-1.891 N/A 1.20 N/A 48.0 N/A 50.40 N/A Yes N/A N/A
47-1.934 N/A 1.20 N/A 49.10 N/A 51.50 N/A Yes N/A N/A
47-1.954 N/A 1.20 N/A 49.80 N/A 52.20 N/A Yes N/A N/A
47-2.141ES N/A 1.20 N/A 54.50 N/A 56.90 N/A Yes N/A N/A
48-2.236SS N/A 1.20 N/A 56.80 N/A 59.20 N/A N/A Yes N/A
47-2.350 N/A 1.20 N/A 59.70 N/A 62.10 N/A Yes N/A N/A
47-4.343 N/A 1.20 N/A 110.30 N/A 112.70 N/A Yes N/A N/A
Unit of Measure
1 2 3 4