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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: Comparison Properties Chart, PTFE Encapsulated O-rings, Material Shelf Life, and O-ring Groove Design Chart. EP is also known as: Eythylene Propylene, EPR, EPDM, EPT, E.

EP is an elastomer which is characterized by wide range of applications and good chemical resistance. Ethylene propylene compounds have good resistance to detergents, alkalis, mild acids, greases, silicone oils, and alcohols.
AS568 Buna O-Rings
Unit of Measure
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Item #

IntegrationID

Type

Material

Cross Section Width

Durometer

Inside Diameter

Cross Section Tolerance +/-

Inside Diameter Tolerance +/-

Size Reference - AS568

Alternate P/N

Units of Measure

Tube Size O.D.

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O-Ring Industries

Quantity
-323 EP-70 N/A
190722 		N/A N/A N/A 0.210 in N/A 70 N/A 32.69 mm1.287 in N/A 0.005 in0.12 mm N/A 0.012 in0.30 mm N/A -323 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-324 EP-70 N/A
190723 		N/A N/A N/A 0.210 in N/A 70 N/A 34.29 mm1.350 in N/A 0.005 in0.12 mm N/A 0.012 in0.30 mm N/A -324 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-325 EP-70 N/A
190724 		N/A N/A N/A 0.210 in N/A 70 N/A 37.47 mm1.475 in N/A 0.005 in0.12 mm N/A 0.015 in0.38 mm N/A -325 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-326 EP-70 N/A
190725 		N/A N/A N/A 0.210 in N/A 70 N/A 40.64 mm1.600 in N/A 0.005 in0.12 mm N/A 0.015 in0.38 mm N/A -326 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-327 EP-70 N/A
190726 		N/A N/A N/A 0.210 in N/A 70 N/A 43.82 mm1.725 in N/A 0.005 in0.12 mm N/A 0.015 in0.38 mm N/A -327 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-328 EP-70 N/A
190727 		N/A N/A N/A 0.210 in N/A 70 N/A 46.99 mm1.850 in N/A 0.005 in0.12 mm N/A 0.015 in0.38 mm N/A -328 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-329 EP-70 N/A
190728 		N/A N/A N/A 0.210 in N/A 70 N/A 50.17 mm1.975 in N/A 0.005 in0.12 mm N/A 0.018 in0.46 mm N/A -329 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-330 EP-70 N/A
190729 		N/A N/A N/A 0.210 in N/A 70 N/A 53.34 mm2.100 in N/A 0.005 in0.12 mm N/A 0.018 in0.46 mm N/A -330 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-331 EP-70 N/A
190730 		N/A N/A N/A 0.210 in N/A 70 N/A 56.52 mm2.225 in N/A 0.005 in0.12 mm N/A 0.018 in0.46 mm N/A -331 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-332 EP-70 N/A
190731 		N/A N/A N/A 0.210 in N/A 70 N/A 59.69 mm2.350 in N/A 0.005 in0.12 mm N/A 0.018 in0.46 mm N/A -332 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-333 EP-70 N/A
190732 		N/A N/A N/A 0.210 in N/A 70 N/A 62.87 mm2.475 in N/A 0.005 in0.12 mm N/A 0.020 in0.50 mm N/A -333 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-334 EP-70 N/A
190733 		N/A N/A N/A 0.210 in N/A 70 N/A 66.04 mm2.600 in N/A 0.005 in0.12 mm N/A 0.020 in0.50 mm N/A -334 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-335 EP-70 N/A
190734 		N/A N/A N/A 0.210 in N/A 70 N/A 69.22 mm2.725 in N/A 0.005 in0.12 mm N/A 0.020 in0.50 mm N/A -335 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.v
-336 EP-70 N/A
190735 		N/A N/A N/A 0.210 in N/A 70 N/A 72.39 mm2.850 in N/A 0.005 in0.12 mm N/A 0.020 in0.50 mm N/A -336 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-337 EP-70 N/A
190736 		N/A N/A N/A 0.210 in N/A 70 N/A 75.57 mm2.975 in N/A 0.005 in0.12 mm N/A 0.024 in0.61 mm N/A -337 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-338 EP-70 N/A
190737 		N/A N/A N/A 0.210 in N/A 70 N/A 78.74 mm3.100 in N/A 0.005 in0.12 mm N/A 0.024 in0.61 mm N/A -338 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-339 EP-70 N/A
190738 		N/A N/A N/A 0.210 in N/A 70 N/A 81.92 mm3.225 in N/A 0.005 in0.12 mm N/A 0.024 in0.61 mm N/A -339 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-340 EP-70 N/A
190739 		N/A N/A N/A 0.210 in N/A 70 N/A 85.09 mm3.350 in N/A 0.005 in0.12 mm N/A 0.024 in0.61 mm N/A -340 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-341 EP-70 N/A
190740 		N/A N/A N/A 0.210 in N/A 70 N/A 88.27 mm3.475 in N/A 0.005 in0.12 mm N/A 0.024 in0.61 mm N/A -341 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-342 EP-70 N/A
190741 		N/A N/A N/A 0.210 in N/A 70 N/A 91.44 mm3.600 in N/A 0.005 in0.12 mm N/A 0.028 in0.71 mm N/A -342 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-343 EP-70 N/A
190742 		N/A N/A N/A 0.210 in N/A 70 N/A 94.62 mm3.725 in N/A 0.005 in0.12 mm N/A 0.028 in0.71 mm N/A -343 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-344 EP-70 N/A
190743 		N/A N/A N/A 0.210 in N/A 70 N/A 97.79 mm3.850 in N/A 0.005 in0.12 mm N/A 0.028 in0.71 mm N/A -344 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-345 EP-70 N/A
190744 		N/A N/A N/A 0.210 in N/A 70 N/A 100.97 mm3.975 in N/A 0.005 in0.12 mm N/A 0.028 in0.71 mm N/A -345 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-346 EP-70 N/A
190745 		N/A N/A N/A 0.210 in N/A 70 N/A 104.14 mm4.100 in N/A 0.005 in0.12 mm N/A 0.028 in0.71 mm N/A -346 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-347 EP-70 N/A
190746 		N/A N/A N/A 0.210 in N/A 70 N/A 107.32 mm4.225 in N/A 0.005 in0.12 mm N/A 0.030 in0.76 mm N/A -347 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
Unit of Measure
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