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.

Item #	IntegrationID	Cross Section Width	Durometer	Inside Diameter	Cross Section Tolerance +/-	Inside Diameter Tolerance +/-	Size Reference - AS568	Product Guides
-127 PTFE	N/A 195305	N/A 0.103 in2.62 mm	N/A	N/A 36.17 mm1.424 in	N/A 0.003 in0.08 mm	N/A 0.012 in0.30 mm	N/A -127	N/A Seal Guides
-128 PTFE	N/A 195306	N/A 0.103 in2.62 mm	N/A	N/A 37.77 mm1.487 in	N/A 0.003 in0.08 mm	N/A 0.012 in0.30 mm	N/A -128	N/A Seal Guides
-129 PTFE	N/A 195307	N/A 0.103 in2.62 mm	N/A	N/A 39.34 mm1.549 in	N/A 0.003 in0.08 mm	N/A 0.015 in0.38 mm	N/A -129	N/A Seal Guides
-130 PTFE	N/A 195308	N/A 0.103 in2.62 mm	N/A	N/A 40.94 mm1.612 in	N/A 0.003 in0.08 mm	N/A 0.015 in0.38 mm	N/A -130	N/A Seal Guides
-131 PTFE	N/A 195309	N/A 0.103 in2.62 mm	N/A	N/A 42.52 mm1.674 in	N/A 0.003 in0.08 mm	N/A 0.015 in0.38 mm	N/A -131	N/A Seal Guides
-132 PTFE	N/A 195310	N/A 0.103 in2.62 mm	N/A	N/A 44.12 mm1.737 in	N/A 0.003 in0.08 mm	N/A 0.015 in0.38 mm	N/A -132	N/A Seal Guides
-133 PTFE	N/A 195311	N/A 0.103 in2.62 mm	N/A	N/A 45.69 mm1.799 in	N/A 0.003 in0.08 mm	N/A 0.015 in0.38 mm	N/A -133	N/A Seal Guides
-134 PTFE	N/A 195312	N/A 0.103 in2.62 mm	N/A	N/A 47.29 mm1.862 in	N/A 0.003 in0.08 mm	N/A 0.015 in0.38 mm	N/A -134	N/A Seal Guides
-135 PTFE	N/A 195313	N/A 0.103 in2.62 mm	N/A	N/A 48.90 mm1.925 in	N/A 0.003 in0.08 mm	N/A 0.017 in0.43 mm	N/A -135	N/A Seal Guides
-136 PTFE	N/A 195314	N/A 0.103 in2.62 mm	N/A	N/A 50.47 mm1.987 in	N/A 0.003 in0.08 mm	N/A 0.017 in0.43 mm	N/A -136	N/A Seal Guides
-137 PTFE	N/A 195315	N/A 0.103 in2.62 mm	N/A	N/A 52.07 mm2.050 in	N/A 0.003 in0.08 mm	N/A 0.017 in0.43 mm	N/A -137	N/A Seal Guides
-138 PTFE	N/A 195316	N/A 0.103 in2.62 mm	N/A	N/A 53.64 mm2.112 in	N/A 0.003 in0.08 mm	N/A 0.017 in0.43 mm	N/A -138	N/A Seal Guides
-139 PTFE	N/A 195317	N/A 0.103 in2.62 mm	N/A	N/A 55.25 mm2.175 in	N/A 0.003 in0.08 mm	N/A 0.017 in0.43 mm	N/A -139	N/A Seal Guides
-140 PTFE	N/A 195318	N/A 0.103 in2.62 mm	N/A	N/A 56.82 mm2.237 in	N/A 0.003 in0.08 mm	N/A 0.017 in0.43 mm	N/A -140	N/A Seal Guides
-141 PTFE	N/A 195319	N/A 0.103 in2.62 mm	N/A	N/A 58.42 mm2.300 in	N/A 0.003 in0.08 mm	N/A 0.020 in0.50 mm	N/A -141	N/A Seal Guides
-142 PTFE	N/A 195320	N/A 0.103 in2.62 mm	N/A	N/A 59.99 mm2.362 in	N/A 0.003 in0.08 mm	N/A 0.020 in0.50 mm	N/A -142	N/A Seal Guides
-143 PTFE	N/A 195321	N/A 0.103 in2.62 mm	N/A	N/A 61.60 mm2.425 in	N/A 0.003 in0.08 mm	N/A 0.020 in0.50 mm	N/A -143	N/A Seal Guides
-144 PTFE	N/A 195322	N/A 0.103 in2.62 mm	N/A	N/A 63.17 mm2.487 in	N/A 0.003 in0.08 mm	N/A 0.020 in0.50 mm	N/A -144	N/A Seal Guides
-145 PTFE	N/A 195323	N/A 0.103 in2.62 mm	N/A	N/A 64.77 mm2.550 in	N/A 0.003 in0.08 mm	N/A 0.020 in0.50 mm	N/A -145	N/A Seal Guides
-146 PTFE	N/A 195324	N/A 0.103 in2.62 mm	N/A	N/A 66.34 mm2.612 in	N/A 0.003 in0.08 mm	N/A 0.020 in0.50 mm	N/A -146	N/A Seal Guides
-147 PTFE	N/A 195325	N/A 0.103 in2.62 mm	N/A	N/A 67.95 mm2.675 in	N/A 0.003 in0.08 mm	N/A 0.022 in0.55 mm	N/A -147	N/A Seal Guides
-148 PTFE	N/A 195326	N/A 0.103 in2.62 mm	N/A	N/A 69.52 mm2.737 in	N/A 0.003 in0.08 mm	N/A 0.022 in0.55 mm	N/A -148	N/A Seal Guides
-149 PTFE	N/A 195327	N/A 0.103 in2.62 mm	N/A	N/A 71.12 mm2.800 in	N/A 0.003 in0.08 mm	N/A 0.022 in0.55 mm	N/A -149	N/A Seal Guides
-150 PTFE	N/A 195328	N/A 0.103 in2.62 mm	N/A	N/A 72.69 mm2.862 in	N/A 0.003 in0.08 mm	N/A 0.022 in0.55 mm	N/A -150	N/A Seal Guides
-151 PTFE	N/A 195329	N/A 0.103 in2.62 mm	N/A	N/A 75.87 mm2.987 in	N/A 0.003 in0.08 mm	N/A 0.024 in0.61 mm	N/A -151	N/A Seal Guides

N/A
195305

N/A 0.103 in2.62 mm

N/A

N/A 36.17 mm1.424 in

N/A 0.003 in0.08 mm

N/A 0.012 in0.30 mm

N/A -127

N/A Seal Guides

-128 PTFE

N/A
195306

N/A 0.103 in2.62 mm

N/A

N/A 37.77 mm1.487 in

N/A 0.003 in0.08 mm

N/A 0.012 in0.30 mm

N/A -128

N/A Seal Guides

-129 PTFE

N/A
195307

N/A 0.103 in2.62 mm

N/A

N/A 39.34 mm1.549 in

N/A 0.003 in0.08 mm

N/A 0.015 in0.38 mm

N/A -129

N/A Seal Guides

-130 PTFE

N/A
195308

N/A 0.103 in2.62 mm

N/A

N/A 40.94 mm1.612 in

N/A 0.003 in0.08 mm

N/A 0.015 in0.38 mm

N/A -130

N/A Seal Guides

-131 PTFE

N/A
195309

N/A 0.103 in2.62 mm

N/A

N/A 42.52 mm1.674 in

N/A 0.003 in0.08 mm

N/A 0.015 in0.38 mm

N/A -131

N/A Seal Guides

-132 PTFE

N/A
195310

N/A 0.103 in2.62 mm

N/A

N/A 44.12 mm1.737 in

N/A 0.003 in0.08 mm

N/A 0.015 in0.38 mm

N/A -132

N/A Seal Guides

-133 PTFE

N/A
195311

N/A 0.103 in2.62 mm

N/A

N/A 45.69 mm1.799 in

N/A 0.003 in0.08 mm

N/A 0.015 in0.38 mm

N/A -133

N/A Seal Guides

-134 PTFE

N/A
195312

N/A 0.103 in2.62 mm

N/A

N/A 47.29 mm1.862 in

N/A 0.003 in0.08 mm

N/A 0.015 in0.38 mm

N/A -134

N/A Seal Guides

-135 PTFE

N/A
195313

N/A 0.103 in2.62 mm

N/A

N/A 48.90 mm1.925 in

N/A 0.003 in0.08 mm

N/A 0.017 in0.43 mm

N/A -135

N/A Seal Guides

-136 PTFE

N/A
195314

N/A 0.103 in2.62 mm

N/A

N/A 50.47 mm1.987 in

N/A 0.003 in0.08 mm

N/A 0.017 in0.43 mm

N/A -136

N/A Seal Guides

-137 PTFE

N/A
195315

N/A 0.103 in2.62 mm

N/A

N/A 52.07 mm2.050 in

N/A 0.003 in0.08 mm

N/A 0.017 in0.43 mm

N/A -137

N/A Seal Guides

-138 PTFE

N/A
195316

N/A 0.103 in2.62 mm

N/A

N/A 53.64 mm2.112 in

N/A 0.003 in0.08 mm

N/A 0.017 in0.43 mm

N/A -138

N/A Seal Guides

-139 PTFE

N/A
195317

N/A 0.103 in2.62 mm

N/A

N/A 55.25 mm2.175 in

N/A 0.003 in0.08 mm

N/A 0.017 in0.43 mm

N/A -139

N/A Seal Guides

-140 PTFE

N/A
195318

N/A 0.103 in2.62 mm

N/A

N/A 56.82 mm2.237 in

N/A 0.003 in0.08 mm

N/A 0.017 in0.43 mm

N/A -140

N/A Seal Guides

-141 PTFE

N/A
195319

N/A 0.103 in2.62 mm

N/A

N/A 58.42 mm2.300 in

N/A 0.003 in0.08 mm

N/A 0.020 in0.50 mm

N/A -141

N/A Seal Guides

-142 PTFE

N/A
195320

N/A 0.103 in2.62 mm

N/A

N/A 59.99 mm2.362 in

N/A 0.003 in0.08 mm

N/A 0.020 in0.50 mm

N/A -142

N/A Seal Guides

-143 PTFE

N/A
195321

N/A 0.103 in2.62 mm

N/A

N/A 61.60 mm2.425 in

N/A 0.003 in0.08 mm

N/A 0.020 in0.50 mm

N/A -143

N/A Seal Guides

-144 PTFE

N/A
195322

N/A 0.103 in2.62 mm

N/A

N/A 63.17 mm2.487 in

N/A 0.003 in0.08 mm

N/A 0.020 in0.50 mm

N/A -144

N/A Seal Guides

-145 PTFE

N/A
195323

N/A 0.103 in2.62 mm

N/A

N/A 64.77 mm2.550 in

N/A 0.003 in0.08 mm

N/A 0.020 in0.50 mm

N/A -145

N/A Seal Guides

-146 PTFE

N/A
195324

N/A 0.103 in2.62 mm

N/A

N/A 66.34 mm2.612 in

N/A 0.003 in0.08 mm

N/A 0.020 in0.50 mm

N/A -146

N/A Seal Guides

-147 PTFE

N/A
195325

N/A 0.103 in2.62 mm

N/A

N/A 67.95 mm2.675 in

N/A 0.003 in0.08 mm

N/A 0.022 in0.55 mm

N/A -147

N/A Seal Guides

-148 PTFE

N/A
195326

N/A 0.103 in2.62 mm

N/A

N/A 69.52 mm2.737 in

N/A 0.003 in0.08 mm

N/A 0.022 in0.55 mm

N/A -148

N/A Seal Guides

-149 PTFE

N/A
195327

N/A 0.103 in2.62 mm

N/A

N/A 71.12 mm2.800 in

N/A 0.003 in0.08 mm

N/A 0.022 in0.55 mm

N/A -149

N/A Seal Guides

-150 PTFE

N/A
195328

N/A 0.103 in2.62 mm

N/A

N/A 72.69 mm2.862 in

N/A 0.003 in0.08 mm

N/A 0.022 in0.55 mm

N/A -150

N/A Seal Guides

-151 PTFE

N/A
195329

N/A 0.103 in2.62 mm

N/A

N/A 75.87 mm2.987 in

N/A 0.003 in0.08 mm

N/A 0.024 in0.61 mm

N/A -151

N/A Seal Guides