AS568 PTFE O-Rings

OneMonroe’s PTFE O-Rings are designed for applications demanding unparalleled chemical resistance, extreme temperature tolerance, and longevity. Crafted from high-quality PTFE (Polytetrafluoroethylene), these O-rings are well-suited for challenging environments that would compromise other materials. The AS568 standard sizing ensures compatibility across a wide range of applications, from industrial machinery to specialized equipment in chemical processing and food manufacturing. OneMonroe’s commitment to quality means that every PTFE O-ring offers a secure, leak-proof seal that withstands high pressures, making them indispensable for rigorous applications where performance and reliability are essential.

The unique properties of PTFE make these O-rings ideal for environments exposed to aggressive chemicals, solvents, and extreme temperatures. Unlike traditional rubber or elastomer O-rings, PTFE O-rings retain their integrity in high-temperature applications, withstanding ranges from -328°F to 500°F (-200°C to 260°C). This resilience ensures that the O-rings remain effective in sealing processes under the most demanding conditions. Additionally, PTFE’s non-stick properties mean these O-rings experience minimal friction and wear, which prolongs their lifespan and helps reduce maintenance downtime.

At OneMonroe, we understand that no two projects are identical, and our extensive inventory of AS568 PTFE O-rings provides a solution for nearly every industry need. Whether you’re working in aerospace, medical technology, or heavy-duty industrial applications, our PTFE O-rings offer reliable, long-lasting performance. We prioritize quality in every O-ring we produce, ensuring each piece delivers a precise fit and secure seal. With OneMonroe’s PTFE O-rings, you gain not only an exceptional product but also a partner committed to meeting the highest standards of excellence in sealing solutions.

For more information, please see: Comparison Properties Chart, PTFE Encapsulated O-rings, Material Shelf Life, and O-ring Groove Design Chart.

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Item #	IntegrationID	Cross Section Width	Durometer	Inside Diameter	Cross Section Tolerance +/-	Inside Diameter Tolerance +/-	Size Reference - AS568	Product Guides

-452 PTFE	N/A 195580	N/A 0.275 in6.99 mm	N/A	N/A 291.47 mm11.475 in	N/A 0.006 in0.15 mm	N/A 0.060 in1.52 mm	N/A -452	N/A Seal Guides
-453 PTFE	N/A 195581	N/A 0.275 in6.99 mm	N/A	N/A 304.17 mm11.975 in	N/A 0.006 in0.15 mm	N/A 0.060 in1.52 mm	N/A -453	N/A Seal Guides
-454 PTFE	N/A 195582	N/A 0.275 in6.99 mm	N/A	N/A 316.87 mm12.475 in	N/A 0.006 in0.15 mm	N/A 0.060 in1.52 mm	N/A -454	N/A Seal Guides
-455 PTFE	N/A 195583	N/A 0.275 in6.99 mm	N/A	N/A 329.57 mm12.975 in	N/A 0.006 in0.15 mm	N/A 0.060 in1.52 mm	N/A -455	N/A Seal Guides
-456 PTFE	N/A 195584	N/A 0.275 in6.99 mm	N/A	N/A 342.27 mm13.475 in	N/A 0.006 in0.15 mm	N/A 0.070 in1.78 mm	N/A -456	N/A Seal Guides
-457 PTFE	N/A 195585	N/A 0.275 in6.99 mm	N/A	N/A 354.97 mm13.975 in	N/A 0.006 in0.15 mm	N/A 0.070 in1.78 mm	N/A -457	N/A Seal Guides
-458 PTFE	N/A 195586	N/A 0.275 in6.99 mm	N/A	N/A 367.67 mm14.475 in	N/A 0.006 in0.15 mm	N/A 0.070 in1.78 mm	N/A -458	N/A Seal Guides
-459 PTFE	N/A 195587	N/A 0.275 in6.99 mm	N/A	N/A 380.37 mm14.975 in	N/A 0.006 in0.15 mm	N/A 0.070 in1.78 mm	N/A -459	N/A Seal Guides
-460 PTFE	N/A 195588	N/A 0.275 in6.99 mm	N/A	N/A 393.07 mm15.475 in	N/A 0.006 in0.15 mm	N/A 0.070 in1.78 mm	N/A -460	N/A Seal Guides
-461 PTFE	N/A 195589	N/A 0.275 in6.99 mm	N/A	N/A 405.26 mm15.955 in	N/A 0.006 in0.15 mm	N/A 0.075 in1.90 mm	N/A -461	N/A Seal Guides
-462 PTFE	N/A 195590	N/A 0.275 in6.99 mm	N/A	N/A 417.96 mm16.455 in	N/A 0.006 in0.15 mm	N/A 0.075 in1.90 mm	N/A -462	N/A Seal Guides
-463 PTFE	N/A 195591	N/A 0.275 in6.99 mm	N/A	N/A 430.66 mm16.955 in	N/A 0.006 in0.15 mm	N/A 0.080 in2.05 mm	N/A -463	N/A Seal Guides
-464 PTFE	N/A 195592	N/A 0.275 in6.99 mm	N/A	N/A 443.36 mm17.455 in	N/A 0.006 in0.15 mm	N/A 0.085 in2.15 mm	N/A -464	N/A Seal Guides
-465 PTFE	N/A 195593	N/A 0.275 in6.99 mm	N/A	N/A 456.06 mm17.955 in	N/A 0.006 in0.15 mm	N/A 0.085 in2.15 mm	N/A -465	N/A Seal Guides
-466 PTFE	N/A 195594	N/A 0.275 in6.99 mm	N/A	N/A 468.76 mm18.455 in	N/A 0.006 in0.15 mm	N/A 0.085 in2.15 mm	N/A -466	N/A Seal Guides
-467 PTFE	N/A 195595	N/A 0.275 in6.99 mm	N/A	N/A 481.46 mm18.955 in	N/A 0.006 in0.15 mm	N/A 0.090 in2.25 mm	N/A -467	N/A Seal Guides
-468 PTFE	N/A 195596	N/A 0.275 in6.99 mm	N/A	N/A 494.16 mm19.455 in	N/A 0.006 in0.15 mm	N/A 0.090 in2.25 mm	N/A -468	N/A Seal Guides
-469 PTFE	N/A 195597	N/A 0.275 in6.99 mm	N/A	N/A 506.86 mm19.955 in	N/A 0.006 in0.15 mm	N/A 0.090 in2.45 mm	N/A -469	N/A Seal Guides
-470 PTFE	N/A 195598	N/A 0.275 in6.99 mm	N/A	N/A 532.26 mm20.955 in	N/A 0.006 in0.15 mm	N/A 0.090 in2.45 mm	N/A -470	N/A Seal Guides
-471 PTFE	N/A 195599	N/A 0.275 in6.99 mm	N/A	N/A 557.66 mm21.955 in	N/A 0.006 in0.15 mm	N/A 0.100 in2.55 mm	N/A -471	N/A Seal Guides
-472 PTFE	N/A 195600	N/A 0.275 in6.99 mm	N/A	N/A 582.65 mm22.940 in	N/A 0.006 in0.15 mm	N/A 0.105 in2.65 mm	N/A -472	N/A Seal Guides
-473 PTFE	N/A 195601	N/A 0.275 in6.99 mm	N/A	N/A 608.10 mm23.940 in	N/A 0.006 in0.15 mm	N/A 0.110 in2.80 mm	N/A -473	N/A Seal Guides
-474 PTFE	N/A 195602	N/A 0.275 in6.99 mm	N/A	N/A 633.50 mm24.940 in	N/A 0.006 in0.15 mm	N/A 0.115 in2.90 mm	N/A -474	N/A Seal Guides
-475 PTFE	N/A 195603	N/A 0.275 in6.99 mm	N/A	N/A 658.85 mm25.940 in	N/A 0.006 in0.15 mm	N/A 0.120 in3.05 mm	N/A -475	N/A Seal Guides

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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
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0.176
0.206
0.208
0.234
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0.239
0.296
0.299
0.300
0.359
0.362
0.364
0.412
0.421
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0.475
0.484
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0.537
0.546
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0.662
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0.674
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0.725
0.734
0.737
0.739
0.787
0.796
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0.801
0.850
0.859
0.862
0.864
0.912
0.921
0.924
0.926
0.975
0.984
0.987
0.989
1.037
1.046
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
1.359
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
1.725
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
2.100
2.109
2.112
2.114
2.175
2.225
2.234
2.237
2.239
2.300
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
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8.237
8.475
8.484
8.487
8.725
8.734
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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