Monroe
OneMonroe
Locations Throughout the Country
ISO 9001:2015
Tel: (877) 740-2007
Fax: (800) 453-9683
Email: sales@askmonroe.com
Website: monroeengineering.com
Print Back

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
« 11 12 13 14 15 

Item #

IntegrationID

Cross Section Width

Durometer

Inside Diameter

Cross Section Tolerance +/-

Inside Diameter Tolerance +/-

Size Reference - AS568

Quantity
-348 PTFE N/A
195480 		N/A 0.210 in5.33 mm N/A N/A 110.49 mm4.350 in N/A 0.005 in0.12 mm N/A 0.030 in0.76 mm N/A -348
-349 PTFE N/A
195481 		N/A 0.210 in5.33 mm N/A N/A 113.67 mm4.475 in N/A 0.005 in0.12 mm N/A 0.030 in0.76 mm N/A -349
-350 PTFE N/A
195482 		N/A 0.210 in5.33 mm N/A N/A 116.84 mm4.600 in N/A 0.005 in0.12 mm N/A 0.030 in0.76 mm N/A -350
-351 PTFE N/A
195483 		N/A 0.210 in5.33 mm N/A N/A 120.02 mm4.725 in N/A 0.005 in0.12 mm N/A 0.030 in0.76 mm N/A -351
-352 PTFE N/A
195484 		N/A 0.210 in5.33 mm N/A N/A 123.19 mm4.850 in N/A 0.005 in0.12 mm N/A 0.030 in0.76 mm N/A -352
-353 PTFE N/A
195485 		N/A 0.210 in5.33 mm N/A N/A 126.37 mm4.975 in N/A 0.005 in0.12 mm N/A 0.037 in0.94 mm N/A -353
-354 PTFE N/A
195486 		N/A 0.210 in5.33 mm N/A N/A 129.54 mm5.100 in N/A 0.005 in0.12 mm N/A 0.037 in0.94 mm N/A -354
-355 PTFE N/A
195487 		N/A 0.210 in5.33 mm N/A N/A 132.72 mm5.225 in N/A 0.005 in0.12 mm N/A 0.037 in0.94 mm N/A -355
-356 PTFE N/A
195488 		N/A 0.210 in5.33 mm N/A N/A 135.89 mm5.350 in N/A 0.005 in0.12 mm N/A 0.037 in0.94 mm N/A -356
-357 PTFE N/A
195489 		N/A 0.210 in5.33 mm N/A N/A 139.07 mm5.475 in N/A 0.005 in0.12 mm N/A 0.037 in0.94 mm N/A -357
-358 PTFE N/A
195490 		N/A 0.210 in5.33 mm N/A N/A 142.24 mm5.600 in N/A 0.005 in0.12 mm N/A 0.037 in0.94 mm N/A -358
-359 PTFE N/A
195491 		N/A 0.210 in5.33 mm N/A N/A 145.42 mm5.725 in N/A 0.005 in0.12 mm N/A 0.037 in0.94 mm N/A -359
-360 PTFE N/A
195492 		N/A 0.210 in5.33 mm N/A N/A 148.59 mm5.850 in N/A 0.005 in0.12 mm N/A 0.037 in0.94 mm N/A -360
-361 PTFE N/A
195493 		N/A 0.210 in5.33 mm N/A N/A 151.77 mm5.975 in N/A 0.005 in0.12 mm N/A 0.037 in0.94 mm N/A -361
-362 PTFE N/A
195494 		N/A 0.210 in5.33 mm N/A N/A 158.12 mm6.225 in N/A 0.005 in0.12 mm N/A 0.040 in1.02 mm N/A -362
-363 PTFE N/A
195495 		N/A 0.210 in5.33 mm N/A N/A 164.47 mm6.475 in N/A 0.005 in0.12 mm N/A 0.040 in1.02 mm N/A -363
-364 PTFE N/A
195496 		N/A 0.210 in5.33 mm N/A N/A 170.82 mm6.725 in N/A 0.005 in0.12 mm N/A 0.040 in1.02 mm N/A -364
-365 PTFE N/A
195497 		N/A 0.210 in5.33 mm N/A N/A 177.17 mm6.975 in N/A 0.005 in0.12 mm N/A 0.040 in1.02 mm N/A -365
-366 PTFE N/A
195498 		N/A 0.210 in5.33 mm N/A N/A 183.52 mm7.225 in N/A 0.005 in0.12 mm N/A 0.045 in1.14 mm N/A -366
-367 PTFE N/A
195499 		N/A 0.210 in5.33 mm N/A N/A 189.87 mm7.475 in N/A 0.005 in0.12 mm N/A 0.045 in1.14 mm N/A -367
-368 PTFE N/A
195500 		N/A 0.210 in5.33 mm N/A N/A 196.22 mm7.725 in N/A 0.005 in0.12 mm N/A 0.045 in1.14 mm N/A -368
-369 PTFE N/A
195501 		N/A 0.210 in5.33 mm N/A N/A 202.57 mm7.975 in N/A 0.005 in0.12 mm N/A 0.045 in1.14 mm N/A -369
-370 PTFE N/A
195502 		N/A 0.210 in5.33 mm N/A N/A 208.92 mm8.225 in N/A 0.005 in0.12 mm N/A 0.050 in1.30 mm N/A -370
-371 PTFE N/A
195503 		N/A 0.210 in5.33 mm N/A N/A 215.27 mm8.475 in N/A 0.005 in0.12 mm N/A 0.050 in1.30 mm N/A -371
-372 PTFE N/A
195504 		N/A 0.210 in5.33 mm N/A N/A 221.62 mm8.725 in N/A 0.005 in0.12 mm N/A 0.050 in1.30 mm N/A -372
Unit of Measure
« 11 12 13 14 15