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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 nFor more information, please see: 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.
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

Units of Measure

Tube Size O.D.

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O-Ring Industries

Quantity
-249 KALREZ-70 N/A
193909 		N/A N/A N/A 0.139 in3.53 mm N/A 70 N/A 123.42 mm4.859 in N/A 0.004 in0.10 mm N/A 0.035 in0.89 mm N/A -249 N/A N/A N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-250 KALREZ-70 N/A
193910 		N/A N/A N/A 0.139 in3.53 mm N/A 70 N/A 126.59 mm4.984 in N/A 0.004 in0.10 mm N/A 0.035 in0.89 mm N/A -250 N/A N/A N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-251 KALREZ-70 N/A
193911 		N/A N/A N/A 0.139 in3.53 mm N/A 70 N/A 129.77 mm5.109 in N/A 0.004 in0.10 mm N/A 0.035 in0.89 mm N/A -251 N/A N/A N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-252 KALREZ-70 N/A
193912 		N/A N/A N/A 0.139 in3.53 mm N/A 70 N/A 132.94 mm5.234 in N/A 0.004 in0.10 mm N/A 0.035 in0.89 mm N/A -252 N/A N/A N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-253 KALREZ-70 N/A
193913 		N/A N/A N/A 0.139 in3.53 mm N/A 70 N/A 136.12 mm5.359 in N/A 0.004 in0.10 mm N/A 0.035 in0.89 mm N/A -253 N/A N/A N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-254 KALREZ-70 N/A
193914 		N/A N/A N/A 0.139 in3.53 mm N/A 70 N/A 139.29 mm5.484 in N/A 0.004 in0.10 mm N/A 0.035 in0.89 mm N/A -254 N/A N/A N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-255 KALREZ-70 N/A
193915 		N/A N/A N/A 0.139 in3.53 mm N/A 70 N/A 142.47 mm5.609 in N/A 0.004 in0.10 mm N/A 0.035 in0.89 mm N/A -255 N/A N/A N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-256 KALREZ-70 N/A
193916 		N/A N/A N/A 0.139 in3.53 mm N/A 70 N/A 145.64 mm5.734 in N/A 0.004 in0.10 mm N/A 0.035 in0.89 mm N/A -256 N/A N/A N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-257 KALREZ-70 N/A
193917 		N/A N/A N/A 0.139 in3.53 mm N/A 70 N/A 148.82 mm5.859 in N/A 0.004 in0.10 mm N/A 0.035 in0.89 mm N/A -257 N/A N/A N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-258 KALREZ-70 N/A
193918 		N/A N/A N/A 0.139 in3.53 mm N/A 70 N/A 151.99 mm5.984 in N/A 0.004 in0.10 mm N/A 0.035 in0.89 mm N/A -258 N/A N/A N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-259 KALREZ-70 N/A
193919 		N/A N/A N/A 0.139 in3.53 mm N/A 70 N/A 158.34 mm6.234 in N/A 0.004 in0.10 mm N/A 0.040 in1.02 mm N/A -259 N/A N/A N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-260 KALREZ-70 N/A
193920 		N/A N/A N/A 0.139 in3.53 mm N/A 70 N/A 164.69 mm6.484 in N/A 0.004 in0.10 mm N/A 0.040 in1.02 mm N/A -260 N/A N/A N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-261 KALREZ-70 N/A
193921 		N/A N/A N/A 0.139 in3.53 mm N/A 70 N/A 171.04 mm6.734 in N/A 0.004 in0.10 mm N/A 0.040 in1.02 mm N/A -261 N/A N/A N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-262 KALREZ-70 N/A
193922 		N/A N/A N/A 0.139 in3.53 mm N/A 70 N/A 177.39 mm6.984 in N/A 0.004 in0.10 mm N/A 0.040 in1.02 mm N/A -262 N/A N/A N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-263 KALREZ-70 N/A
193923 		N/A N/A N/A 0.139 in3.53 mm N/A 70 N/A 183.74 mm7.234 in N/A 0.004 in0.10 mm N/A 0.045 in1.14 mm N/A -263 N/A N/A N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-264 KALREZ-70 N/A
193924 		N/A N/A N/A 0.139 in3.53 mm N/A 70 N/A 190.09 mm7.484 in N/A 0.004 in0.10 mm N/A 0.045 in1.14 mm N/A -264 N/A N/A N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-265 KALREZ-70 N/A
193925 		N/A N/A N/A 0.139 in3.53 mm N/A 70 N/A 196.44 mm7.734 in N/A 0.004 in0.10 mm N/A 0.045 in1.14 mm N/A -265 N/A N/A N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-266 KALREZ-70 N/A
193926 		N/A N/A N/A 0.139 in3.53 mm N/A 70 N/A 202.79 mm7.984 in N/A 0.004 in0.10 mm N/A 0.045 in1.14 mm N/A -266 N/A N/A N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-267 KALREZ-70 N/A
193927 		N/A N/A N/A 0.139 in3.53 mm N/A 70 N/A 209.14 mm8.234 in N/A 0.004 in0.10 mm N/A 0.050 in1.25 mm N/A -267 N/A N/A N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-268 KALREZ-70 N/A
193928 		N/A N/A N/A 0.139 in3.53 mm N/A 70 N/A 215.49 mm8.484 in N/A 0.004 in0.10 mm N/A 0.050 in1.25 mm N/A -268 N/A N/A N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-269 KALREZ-70 N/A
193929 		N/A N/A N/A 0.139 in3.53 mm N/A 70 N/A 221.84 mm8.734 in N/A 0.004 in0.10 mm N/A 0.050 in1.25 mm N/A -269 N/A N/A N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-270 KALREZ-70 N/A
193930 		N/A N/A N/A 0.139 in3.53 mm N/A 70 N/A 228.19 mm8.984 in N/A 0.004 in0.10 mm N/A 0.050 in1.25 mm N/A -270 N/A N/A N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-271 KALREZ-70 N/A
193931 		N/A N/A N/A 0.139 in3.53 mm N/A 70 N/A 234.54 mm9.234 in N/A 0.004 in0.10 mm N/A 0.055 in1.40 mm N/A -271 N/A N/A N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-272 KALREZ-70 N/A
193932 		N/A N/A N/A 0.139 in3.53 mm N/A 70 N/A 240.89 mm9.484 in N/A 0.004 in0.10 mm N/A 0.055 in1.40 mm N/A -272 N/A N/A N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-273 KALREZ-70 N/A
193933 		N/A N/A N/A 0.139 in3.53 mm N/A 70 N/A 247.24 mm9.734 in N/A 0.004 in0.10 mm N/A 0.055 in1.40 mm N/A -273 N/A N/A N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
Unit of Measure
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