Standard O-Rings are available in 369 sizes as set up by the Aerospace Standard 568 published by the Society of Automotive Engineers. These sizes are designated by dash numbers shown on the 568 DASH Chart and are standardized by imperial dimensions. Standard O-Rings are specified by their inside diameter and cross section width. AS568 is the most commonly used standard in the U.S. for aerospace, automotive and general industrial applications. For more information, please see: Aerospace Standard 568 Dash Number, Comparison Properties Chart, PTFE Encapsulated O-rings, Material Shelf Life, and O-ring Groove Design Chart.

This elastomer is a copolymer of Tetrafluoroethylene (TFE) and propylene. Its chemical resistance is excellent across a wide range of aggressive media.

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Inside Diamter (mm)

Inside Diamter (in)

Cross Section Width (in)

Cross Section Width (mm)

Durometer

75 83

Item #

Inside Diamter

Cross Section Width

Durometer

Size Reference - AS568

Inside Diameter Tolerance +/-

Cross Section Tolerance +/-

-001 AFLAS-83 N/A 0.74 mm0.029 in N/A 0.040 in1.02 mm N/A 83 N/A -001 N/A 0.004 in0.10 mm N/A 0.003 in0.08 mm
-002 AFLAS-83 N/A 1.07 mm0.042 in N/A 0.050 in1.27 mm N/A 83 N/A -002 N/A 0.004 in0.10 mm N/A 0.003 in0.08 mm
-003 AFLAS-83 N/A 1.42 mm0.056 in N/A 0.060 in1.52 mm N/A 83 N/A -003 N/A 0.004 in0.10 mm N/A 0.003 in0.08 mm
-004 AFLAS-83 N/A 1.78 mm0.070 in N/A 0.070 in1.78 mm N/A 83 N/A -004 N/A 0.005 in0.12 mm N/A 0.003 in0.08 mm
-005 AFLAS-83 N/A 2.57 mm0.101 in N/A 0.070 in1.78 mm N/A 83 N/A -005 N/A 0.005 in0.12 mm N/A 0.003 in0.08 mm
-006 AFLAS-83 N/A 2.90 mm0.114 in N/A 0.070 in1.78 mm N/A 83 N/A -006 N/A 0.005 in0.12 mm N/A 0.003 in0.08 mm
-007 AFLAS-83 N/A 3.68 mm0.145 in N/A 0.070 in1.78 mm N/A 83 N/A -007 N/A 0.005 in0.12 mm N/A 0.003 in0.08 mm
-008 AFLAS-83 N/A 4.47 mm0.176 in N/A 0.070 in1.78 mm N/A 83 N/A -008 N/A 0.005 in0.12 mm N/A 0.003 in0.08 mm
-009 AFLAS-83 N/A 5.28 mm0.208 in N/A 0.070 in1.78 mm N/A 83 N/A -009 N/A 0.005 in0.12 mm N/A 0.003 in0.08 mm
-010 AFLAS-83 N/A 6.07 mm0.239 in N/A 0.070 in1.78 mm N/A 83 N/A -010 N/A 0.005 in0.12 mm N/A 0.003 in0.08 mm
-011 AFLAS-83 N/A 7.65 mm0.300 in N/A 0.070 in1.78 mm N/A 83 N/A -011 N/A 0.005 in0.12 mm N/A 0.003 in0.08 mm
-012 AFLAS-83 N/A 9.25 mm0.364 in N/A 0.070 in1.78 mm N/A 83 N/A -012 N/A 0.005 in0.12 mm N/A 0.003 in0.08 mm
-013 AFLAS-83 N/A 10.82 mm0.426 in N/A 0.070 in1.78 mm N/A 83 N/A -013 N/A 0.005 in0.12 mm N/A 0.003 in0.08 mm
-014 AFLAS-83 N/A 12.42 mm0.489 in N/A 0.070 in1.78 mm N/A 83 N/A -014 N/A 0.005 in0.12 mm N/A 0.003 in0.08 mm
-015 AFLAS-83 N/A 14.00 mm0.551 in N/A 0.070 in1.78 mm N/A 83 N/A -015 N/A 0.007 in0.17 mm N/A 0.003 in0.08 mm
-016 AFLAS-83 N/A 15.60 mm0.614 in N/A 0.070 in1.78 mm N/A 83 N/A -016 N/A 0.009 in0.22 mm N/A 0.003 in0.08 mm
-017 AFLAS-83 N/A 17.17 mm0.676 in N/A 0.070 in1.78 mm N/A 83 N/A -017 N/A 0.009 in0.22 mm N/A 0.003 in0.08 mm
-018 AFLAS-83 N/A 18.77 mm0.739 in N/A 0.070 in1.78 mm N/A 83 N/A -018 N/A 0.009 in0.22 mm N/A 0.003 in0.08 mm
-019 AFLAS-83 N/A 20.35 mm0.801 in N/A 0.070 in1.78 mm N/A 83 N/A -019 N/A 0.009 in0.22 mm N/A 0.003 in0.08 mm
-020 AFLAS-83 N/A 21.95 mm0.864 in N/A 0.070 in1.78 mm N/A 83 N/A -020 N/A 0.009 in0.22 mm N/A 0.003 in0.08 mm
-021 AFLAS-83 N/A 23.52 mm0.926 in N/A 0.070 in1.78 mm N/A 83 N/A -021 N/A 0.009 in0.22 mm N/A 0.003 in0.08 mm
-022 AFLAS-83 N/A 25.12 mm0.989 in N/A 0.070 in1.78 mm N/A 83 N/A -022 N/A 0.010 in0.25 mm N/A 0.003 in0.08 mm
-023 AFLAS-83 N/A 26.70 mm1.051 in N/A 0.070 in1.78 mm N/A 83 N/A -023 N/A 0.010 in0.25 mm N/A 0.003 in0.08 mm
-024 AFLAS-83 N/A 28.30 mm1.114 in N/A 0.070 in1.78 mm N/A 83 N/A -024 N/A 0.010 in0.25 mm N/A 0.003 in0.08 mm
-025 AFLAS-83 N/A 29.87 mm1.176 in N/A 0.070 in1.78 mm N/A 83 N/A -025 N/A 0.011 in0.28 mm N/A 0.003 in0.08 mm
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