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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.

AS568 Buna O-Rings
Unit of Measure
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Item #

IntegrationID

Cross Section Width

Durometer

Inside Diameter

Cross Section Tolerance +/-

Inside Diameter Tolerance +/-

Size Reference - AS568

Quantity
-001 PTFE N/A
195230
N/A 0.040 in1.02 mm N/A N/A 0.74 mm0.029 in N/A 0.003 in0.08 mm N/A 0.004 in0.10 mm N/A -001
-002 PTFE N/A
195231
N/A 0.050 in1.27 mm N/A N/A 1.07 mm0.042 in N/A 0.003 in0.08 mm N/A 0.004 in0.10 mm N/A -002
-003 PTFE N/A
195232
N/A 0.060 in1.52 mm N/A N/A 1.42 mm0.056 in N/A 0.003 in0.08 mm N/A 0.004 in0.10 mm N/A -003
-004 PTFE N/A
195233
N/A 0.070 in1.78 mm N/A N/A 1.78 mm0.070 in N/A 0.003 in0.08 mm N/A 0.005 in0.12 mm N/A -004
-005 PTFE N/A
195234
N/A 0.070 in1.78 mm N/A N/A 2.57 mm0.101 in N/A 0.003 in0.08 mm N/A 0.005 in0.12 mm N/A -005
-006 PTFE N/A
195235
N/A 0.070 in1.78 mm N/A N/A 2.90 mm0.114 in N/A 0.003 in0.08 mm N/A 0.005 in0.12 mm N/A -006
-007 PTFE N/A
195236
N/A 0.070 in1.78 mm N/A N/A 3.68 mm0.145 in N/A 0.003 in0.08 mm N/A 0.005 in0.12 mm N/A -007
-008 PTFE N/A
195237
N/A 0.070 in1.78 mm N/A N/A 4.47 mm0.176 in N/A 0.003 in0.08 mm N/A 0.005 in0.12 mm N/A -008
-009 PTFE N/A
195238
N/A 0.070 in1.78 mm N/A N/A 5.28 mm0.208 in N/A 0.003 in0.08 mm N/A 0.005 in0.12 mm N/A -009
-010 PTFE N/A
195239
N/A 0.070 in1.78 mm N/A N/A 6.07 mm0.239 in N/A 0.003 in0.08 mm N/A 0.005 in0.12 mm N/A -010
-011 PTFE N/A
195240
N/A 0.070 in1.78 mm N/A N/A 7.65 mm0.300 in N/A 0.003 in0.08 mm N/A 0.005 in0.12 mm N/A -011
-012 PTFE N/A
195241
N/A 0.070 in1.78 mm N/A N/A 9.25 mm0.364 in N/A 0.003 in0.08 mm N/A 0.005 in0.12 mm N/A -012
-013 PTFE N/A
195242
N/A 0.070 in1.78 mm N/A N/A 10.82 mm0.426 in N/A 0.003 in0.08 mm N/A 0.005 in0.12 mm N/A -013
-014 PTFE N/A
195243
N/A 0.070 in1.78 mm N/A N/A 12.42 mm0.489 in N/A 0.003 in0.08 mm N/A 0.005 in0.12 mm N/A -014
-015 PTFE N/A
195244
N/A 0.070 in1.78 mm N/A N/A 14.00 mm0.551 in N/A 0.003 in0.08 mm N/A 0.007 in0.17 mm N/A -015
-016 PTFE N/A
195245
N/A 0.070 in1.78 mm N/A N/A 15.60 mm0.614 in N/A 0.003 in0.08 mm N/A 0.009 in0.22 mm N/A -016
-017 PTFE N/A
195246
N/A 0.070 in1.78 mm N/A N/A 17.17 mm0.676 in N/A 0.003 in0.08 mm N/A 0.009 in0.22 mm N/A -017
-018 PTFE N/A
195247
N/A 0.070 in1.78 mm N/A N/A 18.77 mm0.739 in N/A 0.003 in0.08 mm N/A 0.009 in0.22 mm N/A -018
-019 PTFE N/A
195248
N/A 0.070 in1.78 mm N/A N/A 20.35 mm0.801 in N/A 0.003 in0.08 mm N/A 0.009 in0.22 mm N/A -019
-020 PTFE N/A
195249
N/A 0.070 in1.78 mm N/A N/A 21.95 mm0.864 in N/A 0.003 in0.08 mm N/A 0.009 in0.22 mm N/A -020
-021 PTFE N/A
195250
N/A 0.070 in1.78 mm N/A N/A 23.52 mm0.926 in N/A 0.003 in0.08 mm N/A 0.009 in0.22 mm N/A -021
-022 PTFE N/A
195251
N/A 0.070 in1.78 mm N/A N/A 25.12 mm0.989 in N/A 0.003 in0.08 mm N/A 0.010 in0.25 mm N/A -022
-023 PTFE N/A
195252
N/A 0.070 in1.78 mm N/A N/A 26.70 mm1.051 in N/A 0.003 in0.08 mm N/A 0.010 in0.25 mm N/A -023
-024 PTFE N/A
195253
N/A 0.070 in1.78 mm N/A N/A 28.30 mm1.114 in N/A 0.003 in0.08 mm N/A 0.010 in0.25 mm N/A -024
-025 PTFE N/A
195254
N/A 0.070 in1.78 mm N/A N/A 29.87 mm1.176 in N/A 0.003 in0.08 mm N/A 0.011 in0.28 mm N/A -025
Unit of Measure
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