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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. Perfluoroelastomer is also known as FKKM and Perfloro.

Parts resist over 1,800 different chemicals, while offering the high temperature stability of PTFE (327°C). They’re used in aggressive chemical processing, pharmaceutical, oil rcovery, gas recovery, and aerospace applications. The proven, long-term performance of Kalrez® parts can mean less repairs, seal changes, inspections and equipment uptime for greater productivity and yield.

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Inside Diamter (mm)

Inside Diamter (in)

Cross Section Width (in)

Cross Section Width (mm)

Durometer

70 75 90

Item #

Inside Diamter

Cross Section Width

Durometer

Size Reference - AS568

Inside Diameter Tolerance +/-

Cross Section Tolerance +/-

-001 KALREZ-70 N/A 0.74 mm0.029 in N/A 0.040 in1.02 mm N/A 70 N/A -001 N/A 0.004 in0.10 mm N/A 0.003 in0.08 mm
-002 KALREZ-70 N/A 1.07 mm0.042 in N/A 0.050 in1.27 mm N/A 70 N/A -002 N/A 0.004 in0.10 mm N/A 0.003 in0.08 mm
-003 KALREZ-70 N/A 1.42 mm0.056 in N/A 0.060 in1.52 mm N/A 70 N/A -003 N/A 0.004 in0.10 mm N/A 0.003 in0.08 mm
-004 KALREZ-70 N/A 1.78 mm0.070 in N/A 0.070 in1.78 mm N/A 70 N/A -004 N/A 0.005 in0.12 mm N/A 0.003 in0.08 mm
-005 KALREZ-70 N/A 2.57 mm0.101 in N/A 0.070 in1.78 mm N/A 70 N/A -005 N/A 0.005 in0.12 mm N/A 0.003 in0.08 mm
-006 KALREZ-70 N/A 2.90 mm0.114 in N/A 0.070 in1.78 mm N/A 70 N/A -006 N/A 0.005 in0.12 mm N/A 0.003 in0.08 mm
-007 KALREZ-70 N/A 3.68 mm0.145 in N/A 0.070 in1.78 mm N/A 70 N/A -007 N/A 0.005 in0.12 mm N/A 0.003 in0.08 mm
-008 KALREZ-70 N/A 4.47 mm0.176 in N/A 0.070 in1.78 mm N/A 70 N/A -008 N/A 0.005 in0.12 mm N/A 0.003 in0.08 mm
-009 KALREZ-70 N/A 5.28 mm0.208 in N/A 0.070 in1.78 mm N/A 70 N/A -009 N/A 0.005 in0.12 mm N/A 0.003 in0.08 mm
-010 KALREZ-70 N/A 6.07 mm0.239 in N/A 0.070 in1.78 mm N/A 70 N/A -010 N/A 0.005 in0.12 mm N/A 0.003 in0.08 mm
-011 KALREZ-70 N/A 7.65 mm0.300 in N/A 0.070 in1.78 mm N/A 70 N/A -011 N/A 0.005 in0.12 mm N/A 0.003 in0.08 mm
-012 KALREZ-70 N/A 9.25 mm0.364 in N/A 0.070 in1.78 mm N/A 70 N/A -012 N/A 0.005 in0.12 mm N/A 0.003 in0.08 mm
-013 KALREZ-70 N/A 10.82 mm0.426 in N/A 0.070 in1.78 mm N/A 70 N/A -013 N/A 0.005 in0.12 mm N/A 0.003 in0.08 mm
-014 KALREZ-70 N/A 12.42 mm0.489 in N/A 0.070 in1.78 mm N/A 70 N/A -014 N/A 0.005 in0.12 mm N/A 0.003 in0.08 mm
-015 KALREZ-70 N/A 14.00 mm0.551 in N/A 0.070 in1.78 mm N/A 70 N/A -015 N/A 0.007 in0.17 mm N/A 0.003 in0.08 mm
-016 KALREZ-70 N/A 15.60 mm0.614 in N/A 0.070 in1.78 mm N/A 70 N/A -016 N/A 0.009 in0.22 mm N/A 0.003 in0.08 mm
-017 KALREZ-70 N/A 17.17 mm0.676 in N/A 0.070 in1.78 mm N/A 70 N/A -017 N/A 0.009 in0.22 mm N/A 0.003 in0.08 mm
-018 KALREZ-70 N/A 18.77 mm0.739 in N/A 0.070 in1.78 mm N/A 70 N/A -018 N/A 0.009 in0.22 mm N/A 0.003 in0.08 mm
-019 KALREZ-70 N/A 20.35 mm0.801 in N/A 0.070 in1.78 mm N/A 70 N/A -019 N/A 0.009 in0.22 mm N/A 0.003 in0.08 mm
-020 KALREZ-70 N/A 21.95 mm0.864 in N/A 0.070 in1.78 mm N/A 70 N/A -020 N/A 0.009 in0.22 mm N/A 0.003 in0.08 mm
-021 KALREZ-70 N/A 23.52 mm0.926 in N/A 0.070 in1.78 mm N/A 70 N/A -021 N/A 0.009 in0.22 mm N/A 0.003 in0.08 mm
-022 KALREZ-70 N/A 25.12 mm0.989 in N/A 0.070 in1.78 mm N/A 70 N/A -022 N/A 0.010 in0.25 mm N/A 0.003 in0.08 mm
-023 KALREZ-70 N/A 26.70 mm1.051 in N/A 0.070 in1.78 mm N/A 70 N/A -023 N/A 0.010 in0.25 mm N/A 0.003 in0.08 mm
-024 KALREZ-70 N/A 28.30 mm1.114 in N/A 0.070 in1.78 mm N/A 70 N/A -024 N/A 0.010 in0.25 mm N/A 0.003 in0.08 mm
-025 KALREZ-70 N/A 29.87 mm1.176 in N/A 0.070 in1.78 mm N/A 70 N/A -025 N/A 0.011 in0.28 mm N/A 0.003 in0.08 mm
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