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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
-177 EP-70 N/A
190622 		N/A N/A N/A 0.103 in N/A 70 N/A 240.97 mm9.487 in N/A 0.003 in0.08 mm N/A 0.055 in1.40 mm N/A -177 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-178 EP-70 N/A
190623 		N/A N/A N/A 0.103 in N/A 70 N/A 247.32 mm9.737 in N/A 0.003 in0.08 mm N/A 0.055 in1.40 mm N/A -178 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-201 EP-70 N/A
190624 		N/A N/A N/A 0.139 in N/A 70 N/A 4.34 mm0.171 in N/A 0.004 in0.10 mm N/A 0.005 in0.12 mm N/A -201 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-202 EP-70 N/A
190625 		N/A N/A N/A 0.139 in N/A 70 N/A 5.94 mm0.234 in N/A 0.004 in0.10 mm N/A 0.005 in0.12 mm N/A -202 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-203 EP-70 N/A
190626 		N/A N/A N/A 0.139 in N/A 70 N/A 7.52 mm0.296 in N/A 0.004 in0.10 mm N/A 0.005 in0.12 mm N/A -203 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.v
-204 EP-70 N/A
190627 		N/A N/A N/A 0.139 in N/A 70 N/A 9.12 mm0.359 in N/A 0.004 in0.10 mm N/A 0.005 in0.12 mm N/A -204 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-205 EP-70 N/A
190628 		N/A N/A N/A 0.139 in N/A 70 N/A 10.69 mm0.421 in N/A 0.004 in0.10 mm N/A 0.005 in0.12 mm N/A -205 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-206 EP-70 N/A
190629 		N/A N/A N/A 0.139 in N/A 70 N/A 12.29 mm0.484 in N/A 0.004 in0.10 mm N/A 0.005 in0.12 mm N/A -206 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-207 EP-70 N/A
190630 		N/A N/A N/A 0.139 in N/A 70 N/A 13.87 mm0.546 in N/A 0.004 in0.10 mm N/A 0.007 in0.17 mm N/A -207 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-208 EP-70 N/A
190631 		N/A N/A N/A 0.139 in N/A 70 N/A 15.47 mm0.609 in N/A 0.004 in0.10 mm N/A 0.009 in0.23 mm N/A -208 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-209 EP-70 N/A
190632 		N/A N/A N/A 0.139 in N/A 70 N/A 17.04 mm0.671 in N/A 0.004 in0.10 mm N/A 0.009 in0.23 mm N/A -209 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-210 EP-70 N/A
190633 		N/A N/A N/A 0.139 in N/A 70 N/A 18.64 mm0.734 in N/A 0.004 in0.10 mm N/A 0.010 in0.25 mm N/A -210 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-211 EP-70 N/A
190634 		N/A N/A N/A 0.139 in N/A 70 N/A 20.22 mm0.796 in N/A 0.004 in0.10 mm N/A 0.010 in0.25 mm N/A -211 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-212 EP-70 N/A
190635 		N/A N/A N/A 0.139 in N/A 70 N/A 21.82 mm0.859 in N/A 0.004 in0.10 mm N/A 0.010 in0.25 mm N/A -212 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-213 EP-70 N/A
190636 		N/A N/A N/A 0.139 in N/A 70 N/A 23.39 mm0.921 in N/A 0.004 in0.10 mm N/A 0.010 in0.25 mm N/A -213 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-214 EP-70 N/A
190637 		N/A N/A N/A 0.139 in N/A 70 N/A 24.99 mm0.984 in N/A 0.004 in0.10 mm N/A 0.010 in0.25 mm N/A -214 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-215 EP-70 N/A
190638 		N/A N/A N/A 0.139 in N/A 70 N/A 26.57 mm1.046 in N/A 0.004 in0.10 mm N/A 0.010 in0.25 mm N/A -215 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.v
-216 EP-70 N/A
190639 		N/A N/A N/A 0.139 in N/A 70 N/A 28.17 mm1.109 in N/A 0.004 in0.10 mm N/A 0.012 in0.30 mm N/A -216 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-217 EP-70 N/A
190640 		N/A N/A N/A 0.139 in N/A 70 N/A 29.74 mm1.171 in N/A 0.004 in0.10 mm N/A 0.012 in0.30 mm N/A -217 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-218 EP-70 N/A
190641 		N/A N/A N/A 0.139 in N/A 70 N/A 31.34 mm1.234 in N/A 0.004 in0.10 mm N/A 0.012 in0.30 mm N/A -218 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-219 EP-70 N/A
190642 		N/A N/A N/A 0.139 in N/A 70 N/A 32.92 mm1.296 in N/A 0.004 in0.10 mm N/A 0.012 in0.30 mm N/A -219 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-220 EP-70 N/A
190643 		N/A N/A N/A 0.139 in N/A 70 N/A 34.52 mm1.359 in N/A 0.004 in0.10 mm N/A 0.012 in0.30 mm N/A -220 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-221 EP-70 N/A
190644 		N/A N/A N/A 0.139 in N/A 70 N/A 36.09 mm1.421 in N/A 0.004 in0.10 mm N/A 0.012 in0.30 mm N/A -221 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-222 EP-70 N/A
190645 		N/A N/A N/A 0.139 in N/A 70 N/A 37.69 mm1.484 in N/A 0.004 in0.10 mm N/A 0.015 in0.38 mm N/A -222 N/A N/A N/A N/A N/A O-rings are used in the military defense and agriculture industries.
-223 EP-70 N/A
190646 		N/A N/A N/A 0.139 in N/A 70 N/A 40.87 mm1.609 in N/A 0.004 in0.10 mm N/A 0.015 in0.38 mm N/A -223 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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