AS568 Perfluoroelastomer O-Rings

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.

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Cross Section Width (mm)

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Inside Diameter (mm)

Inside Diameter (in)

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.	Call for a Quote	O-Ring Industries

-250 KALREZ-90	N/A 194284	N/A	N/A	N/A 0.139 in3.53 mm	N/A 90	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-90	N/A 194285	N/A	N/A	N/A 0.139 in3.53 mm	N/A 90	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-90	N/A 194286	N/A	N/A	N/A 0.139 in3.53 mm	N/A 90	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-90	N/A 194287	N/A	N/A	N/A 0.139 in3.53 mm	N/A 90	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-90	N/A 194288	N/A	N/A	N/A 0.139 in3.53 mm	N/A 90	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-90	N/A 194289	N/A	N/A	N/A 0.139 in3.53 mm	N/A 90	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-90	N/A 194290	N/A	N/A	N/A 0.139 in3.53 mm	N/A 90	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-90	N/A 194291	N/A	N/A	N/A 0.139 in3.53 mm	N/A 90	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-90	N/A 194292	N/A	N/A	N/A 0.139 in3.53 mm	N/A 90	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-90	N/A 194293	N/A	N/A	N/A 0.139 in3.53 mm	N/A 90	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-90	N/A 194294	N/A	N/A	N/A 0.139 in3.53 mm	N/A 90	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-90	N/A 194295	N/A	N/A	N/A 0.139 in3.53 mm	N/A 90	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-90	N/A 194296	N/A	N/A	N/A 0.139 in3.53 mm	N/A 90	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-90	N/A 194297	N/A	N/A	N/A 0.139 in3.53 mm	N/A 90	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-90	N/A 194298	N/A	N/A	N/A 0.139 in3.53 mm	N/A 90	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-90	N/A 194299	N/A	N/A	N/A 0.139 in3.53 mm	N/A 90	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-90	N/A 194300	N/A	N/A	N/A 0.139 in3.53 mm	N/A 90	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-90	N/A 194301	N/A	N/A	N/A 0.139 in3.53 mm	N/A 90	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-90	N/A 194302	N/A	N/A	N/A 0.139 in3.53 mm	N/A 90	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-90	N/A 194303	N/A	N/A	N/A 0.139 in3.53 mm	N/A 90	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-90	N/A 194304	N/A	N/A	N/A 0.139 in3.53 mm	N/A 90	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-90	N/A 194305	N/A	N/A	N/A 0.139 in3.53 mm	N/A 90	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-90	N/A 194306	N/A	N/A	N/A 0.139 in3.53 mm	N/A 90	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-90	N/A 194307	N/A	N/A	N/A 0.139 in3.53 mm	N/A 90	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.
-274 KALREZ-90	N/A 194308	N/A	N/A	N/A 0.139 in3.53 mm	N/A 90	N/A 253.59 mm9.984 in	N/A 0.004 in0.10 mm	N/A 0.055 in1.40 mm	N/A -274	N/A	N/A	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.

551 - 575 of 1182 | Results Per Page | View | Unit of Measure

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No Preference
0.74
1.07
1.24
1.42
1.78
10.46
10.69
10.77
10.82
100.97
101.19
101.27
101.32
104.14
104.37
107.32
107.54
107.62
107.67
110.49
110.72
113.67
113.89
113.97
114.02
116.84
117.07
12.07
12.29
12.37
12.42
120.02
120.24
120.32
120.37
123.19
123.42
126.37
126.59
126.67
126.72
129.54
129.77
13.64
13.87
13.94
132.72
132.94
133.02
133.07
135.89
136.12
139.07
139.29
139.37
14.00
142.24
142.47
145.42
145.64
145.72
148.59
148.82
15.24
15.47
15.54
15.60
151.77
151.99
152.07
158.12
158.34
158.42
16.81
164.47
164.69
164.77
17.04
17.12
17.17
170.82
171.04
171.12
177.17
177.39
177.47
18.42
18.64
18.72
18.77
183.52
183.74
183.82
189.87
19.99
190.09
190.17
196.22
196.44
196.52
2.06
2.57
2.84
2.90
20.22
20.29
20.35
202.57
202.79
202.87
208.92
209.14
209.22
21.59
21.82
21.89
21.95
215.27
215.49
215.57
221.62
221.84
221.92
227.97
228.19
228.27
23.16
23.39
23.47
23.52
234.32
234.54
234.62
24.77
24.99
240.67
240.89
240.97
247.02
247.24
247.32
25.07
25.12
253.37
253.59
26.34
26.57
26.64
26.70
266.07
266.29
27.94
278.77
278.99
28.17
28.24
28.30
29.51
29.74
29.82
29.87
291.47
291.69
3.63
3.68
304.17
304.39
31.12
31.34
31.42
31.47
316.87
32.69
32.92
32.99
329.55
329.57
329.79
33.05
34.29
34.52
34.59
34.65
342.27
354.97
355.19
36.09
36.17
367.67
37.47
37.69
37.77
37.82
380.37
380.59
39.34
393.07
4.34
4.42
4.47
40.64
40.87
40.94
405.26
41.00
417.96
42.52
43.82
430.66
44.04
44.12
44.17
443.36
45.69
456.06
46.99
468.76
47.22
47.29
47.35
48.90
481.46
494.16
5.23
5.28
5.94
50.17
50.39
50.47
50.52
506.86
52.07
53.34
53.57
53.64
53.70
532.26
55.25
557.66
56.52
56.74
56.82
56.87
58.42
582.65
59.69
59.92
59.99
6.02
6.07
60.05
608.10
61.60
62.87
63.09
63.17
63.22
633.50
64.77
658.85
658.88
66.04
66.27
66.34
66.40
67.95
69.22
69.44
69.52
69.57
7.52
7.59
7.65
71.12
72.39
72.62
72.69
72.75
75.57
75.79
75.87
75.92
78.74
78.97
81.92
82.14
82.22
82.27
85.09
85.32
88.27
88.49
88.57
88.62
9.12
9.19
9.25
91.44
91.67
94.62
94.84
94.92
94.97
97.79
98.02

No Preference
0.029
0.042
0.049
0.056
0.070
0.081
0.101
0.112
0.114
0.143
0.145
0.171
0.174
0.176
0.185
0.206
0.208
0.234
0.237
0.239
0.296
0.299
0.300
0.301
0.351
0.359
0.362
0.364
0.412
0.414
0.421
0.424
0.426
0.468
0.475
0.484
0.487
0.489
0.530
0.537
0.546
0.549
0.551
0.600
0.609
0.612
0.614
0.644
0.662
0.671
0.674
0.676
0.706
0.725
0.734
0.737
0.739
0.755
0.787
0.796
0.799
0.801
0.850
0.859
0.862
0.863
0.864
0.912
0.921
0.924
0.926
0.975
0.984
0.986
0.987
0.989
1.037
1.046
1.047
1.049
1.051
1.100
1.109
1.112
1.114
1.162
1.171
1.174
1.176
1.225
1.234
1.237
1.239
1.287
1.296
1.299
1.301
1.350
1.355
1.359
1.362
1.364
1.421
1.424
1.475
1.484
1.487
1.489
1.549
1.600
1.609
1.612
1.614
1.674
1.720
1.725
1.734
1.737
1.739
1.799
1.850
1.859
1.862
1.864
1.925
1.975
1.984
1.987
1.989
10.475
10.484
10.975
10.984
11.475
11.484
11.975
11.984
12.475
12.975
12.984
13.475
13.975
13.984
14.475
14.975
14.984
15.475
15.955
16.455
16.955
17.455
17.955
18.455
18.955
19.455
19.955
2.050
2.090
2.100
2.109
2.112
2.114
2.175
2.225
2.234
2.237
2.239
2.300
2.337
2.350
2.359
2.362
2.364
2.425
2.475
2.484
2.487
2.489
2.550
2.600
2.609
2.612
2.614
2.675
2.725
2.734
2.737
2.739
2.800
2.850
2.859
2.862
2.864
2.975
2.984
2.987
2.989
20.955
21.955
22.940
23.940
24.940
25.940
3.100
3.109
3.225
3.234
3.237
3.239
3.350
3.359
3.475
3.484
3.487
3.489
3.600
3.609
3.725
3.734
3.737
3.739
3.850
3.859
3.975
3.984
3.987
3.989
4.100
4.109
4.225
4.234
4.237
4.239
4.350
4.359
4.475
4.484
4.487
4.489
4.600
4.609
4.725
4.734
4.737
4.739
4.850
4.859
4.975
4.984
4.987
4.989
5.100
5.109
5.225
5.234
5.237
5.239
5.350
5.359
5.475
5.484
5.487
5.600
5.609
5.725
5.734
5.737
5.850
5.859
5.975
5.984
5.987
6.225
6.234
6.237
6.475
6.484
6.487
6.725
6.734
6.737
6.975
6.984
6.987
7.225
7.234
7.237
7.475
7.484
7.487
7.725
7.734
7.737
7.975
7.984
7.987
8.225
8.234
8.237
8.475
8.484
8.487
8.725
8.734
8.737
8.975
8.984
8.987
9.225
9.234
9.237
9.475
9.484
9.487
9.725
9.734
9.737
9.975
9.984