| Tube Fitting O-Ring Boss Size Chart |
| 1/16 (.070 o-ring) AS568A Sizes 3/32(.103 o-ring) AS568A Sizes 1/8(.139 o-ring) AS568A Sizes 3/16(.210 o-ring) AS568A Sizes 1/4 (.275 o-ring) AS568A Sizes |
| AS568A O-RING UNIVERSAL SERIES SIZE CHART - FLEX INC. TEL 800-525-8463 & FAX 440-946-4620 Metric Size Chart |
| AS568A- |
| ID |
| TOL.+/- |
| C/S |
| TOL.+/- |
| Nom. I.D. |
| 902 |
| .239 |
| 0.005 |
| 0.064 |
| 0.003 |
| 1/8 |
| 903 |
| .301 |
| 0.005 |
| 0.064 |
| 0.003 |
| 3/32 |
| 904 |
| .351 |
| 0.005 |
| 0.072 |
| 0.003 |
| 1/4 |
| 905 |
| .414 |
| 0.005 |
| 0.072 |
| 0.003 |
| 5/16 |
| 906 |
| .468 |
| 0.005 |
| 0.078 |
| 0.003 |
| 3/8 |
| 907 |
| .530 |
| 0.007 |
| 0.082 |
| 0.003 |
| 7/16 |
| 908 |
| .644 |
| 0.009 |
| 0.087 |
| 0.003 |
| 1/2 |
| 909 |
| .706 |
| 0.009 |
| 0.097 |
| 0.003 |
| 9/16 |
| 910 |
| .755 |
| 0.009 |
| 0.097 |
| 0.003 |
| 5/8 |
| 911 |
| .863 |
| 0.009 |
| 0.116 |
| 0.004 |
| 11/16 |
| 912 |
| .924 |
| 0.009 |
| 0.116 |
| 0.004 |
| 3/4 |
| 914 |
| 1.047 |
| 0.010 |
| 0.116 |
| 0.004 |
| 7/8 |
| 916 |
| 1.171 |
| 0.010 |
| 0.116 |
| 0.004 |
| 1 |
| 918 |
| 1.355 |
| 0.012 |
| 0.116 |
| 0.004 |
| 1-1/16 |
| 920 |
| 1.475 |
| 0.014 |
| 0.118 |
| 0.004 |
| 1-1/4 |
| 924 |
| 1.720 |
| 0.014 |
| 0.118 |
| 0.004 |
| 1-1/2 |
| 928 |
| 2.090 |
| 0.018 |
| 0.118 |
| 0.004 |
| 1-3/4 |
| 932 |
| 2.337 |
| 0.018 |
| 0.118 |
| 0.004 |
| 2 |
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