BS PFTE O-Rings | OneMonroe

OneMonroe PTFE O-Rings provide an exceptional sealing solution for demanding applications where standard rubber or elastomer rings may fall short. These high-quality O-Rings are made from PTFE (polytetrafluoroethylene), a versatile and durable material known for its remarkable resistance to high temperatures, chemicals, and extreme environmental conditions. PTFE O-Rings offer superior performance in harsh industrial settings, such as chemical processing, oil and gas, and food manufacturing, where contamination-free, leak-proof seals are essential. OneMonroe’s PTFE O-Rings are designed to maintain their integrity under extreme pressure, making them an optimal choice for businesses that prioritize reliable, long-lasting components.

Available in a range of sizes to fit various BS specifications, OneMonroe’s PTFE O-Rings are engineered to meet the unique demands of high-temperature and corrosive applications. Unlike traditional O-Rings, PTFE O-Rings are non-reactive and highly resistant to a wide range of chemicals, including acids, bases, and solvents, allowing them to deliver top-notch performance where rubber O-Rings might degrade. The PTFE material also boasts a low coefficient of friction, which minimizes wear and tear on both the O-Ring and surrounding components. This means less downtime and fewer replacements, translating to cost savings and increased operational efficiency for your business.

OneMonroe is committed to providing products that offer exceptional durability and performance in even the most challenging environments. Each PTFE O-Ring is precision-manufactured and quality-checked to meet stringent industry standards, ensuring you receive a reliable product every time. Whether you’re working in an industrial, automotive, or medical setting, OneMonroe PTFE O-Rings are designed to handle the job with unmatched resilience and durability. Trust OneMonroe’s dedication to quality and performance, and let our PTFE O-Rings help keep your operations running smoothly and securely.

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

Item #	IntegrationID	Type	Material	Cross Section Width	Inside Diameter	CSW Tolerance	BS Number
BS279 PTFE	N/A 189536	N/A BS Standard O-Ring	N/A PTFE	N/A 0.139 in3.53 mm	N/A 12.984 in329.79 mm	N/A 0.004 in0.10 mm	N/A -279
BS278 PTFE	N/A 189537	N/A BS Standard O-Ring	N/A PTFE	N/A 0.139 in3.53 mm	N/A 11.984 in304.39 mm	N/A 0.004 in0.10 mm	N/A -278
BS277 PTFE	N/A 189538	N/A BS Standard O-Ring	N/A PTFE	N/A 0.139 in3.53 mm	N/A 11.484 in291.69 mm	N/A 0.004 in0.10 mm	N/A -277
BS276 PTFE	N/A 189539	N/A BS Standard O-Ring	N/A PTFE	N/A 0.139 in3.53 mm	N/A 10.984 in278.99 mm	N/A 0.004 in0.10 mm	N/A -276
BS275 PTFE	N/A 189540	N/A BS Standard O-Ring	N/A PTFE	N/A 0.139 in3.53 mm	N/A 10.484 in266.29 mm	N/A 0.004 in0.10 mm	N/A -275
BS274 PTFE	N/A 189541	N/A BS Standard O-Ring	N/A PTFE	N/A 0.139 in3.53 mm	N/A 9.984 in253.59 mm	N/A 0.004 in0.10 mm	N/A -274
BS273 PTFE	N/A 189542	N/A BS Standard O-Ring	N/A PTFE	N/A 0.139 in3.53 mm	N/A 9.734 in247.24 mm	N/A 0.004 in0.10 mm	N/A -273
BS272 PTFE	N/A 189543	N/A BS Standard O-Ring	N/A PTFE	N/A 0.139 in3.53 mm	N/A 9.484 in240.89 mm	N/A 0.004 in0.10 mm	N/A -272
BS271 PTFE	N/A 189544	N/A BS Standard O-Ring	N/A PTFE	N/A 0.139 in3.53 mm	N/A 9.234 in234.54 mm	N/A 0.004 in0.10 mm	N/A -271
BS270 PTFE	N/A 189545	N/A BS Standard O-Ring	N/A PTFE	N/A 0.139 in3.53 mm	N/A 8.984 in228.19 mm	N/A 0.004 in0.10 mm	N/A -270
BS269 PTFE	N/A 189546	N/A BS Standard O-Ring	N/A PTFE	N/A 0.139 in3.53 mm	N/A 8.734 in221.84 mm	N/A 0.004 in0.10 mm	N/A -269
BS268 PTFE	N/A 189547	N/A BS Standard O-Ring	N/A PTFE	N/A 0.139 in3.53 mm	N/A 8.484 in215.49 mm	N/A 0.004 in0.10 mm	N/A -268
BS267 PTFE	N/A 189548	N/A BS Standard O-Ring	N/A PTFE	N/A 0.139 in3.53 mm	N/A 8.234 in209.14 mm	N/A 0.004 in0.10 mm	N/A -267
BS266 PTFE	N/A 189549	N/A BS Standard O-Ring	N/A PTFE	N/A 0.139 in3.53 mm	N/A 7.984 in202.79 mm	N/A 0.004 in0.10 mm	N/A -266
BS265 PTFE	N/A 189550	N/A BS Standard O-Ring	N/A PTFE	N/A 0.139 in3.53 mm	N/A 7.734 in196.44 mm	N/A 0.004 in0.10 mm	N/A -265
BS264 PTFE	N/A 189551	N/A BS Standard O-Ring	N/A PTFE	N/A 0.139 in3.53 mm	N/A 7.484 in190.09 mm	N/A 0.004 in0.10 mm	N/A -264
BS263 PTFE	N/A 189552	N/A BS Standard O-Ring	N/A PTFE	N/A 0.139 in3.53 mm	N/A 7.234 in183.74 mm	N/A 0.004 in0.10 mm	N/A -263
BS262 PTFE	N/A 189553	N/A BS Standard O-Ring	N/A PTFE	N/A 0.139 in3.53 mm	N/A 6.984 in177.39 mm	N/A 0.004 in0.10 mm	N/A -262
BS261 PTFE	N/A 189554	N/A BS Standard O-Ring	N/A PTFE	N/A 0.139 in3.53 mm	N/A 6.734 in171.04 mm	N/A 0.004 in0.10 mm	N/A -261
BS275 PTFE	N/A 189555	N/A BS Standard O-Ring	N/A PTFE	N/A 0.139 in3.53 mm	N/A 6.484 in164.69 mm	N/A 0.004 in0.10 mm	N/A -275
BS259 PTFE	N/A 189556	N/A BS Standard O-Ring	N/A PTFE	N/A 0.139 in3.53 mm	N/A 6.234 in158.34 mm	N/A 0.004 in0.10 mm	N/A -259
BS258 PTFE	N/A 189557	N/A BS Standard O-Ring	N/A PTFE	N/A 0.139 in3.53 mm	N/A 5.984 in151.99 mm	N/A 0.004 in0.10 mm	N/A -258
BS257 PTFE	N/A 189558	N/A BS Standard O-Ring	N/A PTFE	N/A 0.139 in3.53 mm	N/A 5.859 in148.82 mm	N/A 0.004 in0.10 mm	N/A -257
BS256 PTFE	N/A 189559	N/A BS Standard O-Ring	N/A PTFE	N/A 0.139 in3.53 mm	N/A 5.734 in145.64 mm	N/A 0.004 in0.10 mm	N/A -256
BS255 PTFE	N/A 189560	N/A BS Standard O-Ring	N/A PTFE	N/A 0.139 in3.53 mm	N/A 5.759 in142.47 mm	N/A 0.004 in0.10 mm	N/A -255

N/A
189536

N/A BS Standard O-Ring

N/A PTFE

N/A 0.139 in3.53 mm

N/A 12.984 in329.79 mm

N/A 0.004 in0.10 mm

N/A -279

BS278 PTFE

N/A
189537

N/A BS Standard O-Ring

N/A PTFE

N/A 0.139 in3.53 mm

N/A 11.984 in304.39 mm

N/A 0.004 in0.10 mm

N/A -278

BS277 PTFE

N/A
189538

N/A BS Standard O-Ring

N/A PTFE

N/A 0.139 in3.53 mm

N/A 11.484 in291.69 mm

N/A 0.004 in0.10 mm

N/A -277

BS276 PTFE

N/A
189539

N/A BS Standard O-Ring

N/A PTFE

N/A 0.139 in3.53 mm

N/A 10.984 in278.99 mm

N/A 0.004 in0.10 mm

N/A -276

BS275 PTFE

N/A
189540

N/A BS Standard O-Ring

N/A PTFE

N/A 0.139 in3.53 mm

N/A 10.484 in266.29 mm

N/A 0.004 in0.10 mm

N/A -275

BS274 PTFE

N/A
189541

N/A BS Standard O-Ring

N/A PTFE

N/A 0.139 in3.53 mm

N/A 9.984 in253.59 mm

N/A 0.004 in0.10 mm

N/A -274

BS273 PTFE

N/A
189542

N/A BS Standard O-Ring

N/A PTFE

N/A 0.139 in3.53 mm

N/A 9.734 in247.24 mm

N/A 0.004 in0.10 mm

N/A -273

BS272 PTFE

N/A
189543

N/A BS Standard O-Ring

N/A PTFE

N/A 0.139 in3.53 mm

N/A 9.484 in240.89 mm

N/A 0.004 in0.10 mm

N/A -272

BS271 PTFE

N/A
189544

N/A BS Standard O-Ring

N/A PTFE

N/A 0.139 in3.53 mm

N/A 9.234 in234.54 mm

N/A 0.004 in0.10 mm

N/A -271

BS270 PTFE

N/A
189545

N/A BS Standard O-Ring

N/A PTFE

N/A 0.139 in3.53 mm

N/A 8.984 in228.19 mm

N/A 0.004 in0.10 mm

N/A -270

BS269 PTFE

N/A
189546

N/A BS Standard O-Ring

N/A PTFE

N/A 0.139 in3.53 mm

N/A 8.734 in221.84 mm

N/A 0.004 in0.10 mm

N/A -269

BS268 PTFE

N/A
189547

N/A BS Standard O-Ring

N/A PTFE

N/A 0.139 in3.53 mm

N/A 8.484 in215.49 mm

N/A 0.004 in0.10 mm

N/A -268

BS267 PTFE

N/A
189548

N/A BS Standard O-Ring

N/A PTFE

N/A 0.139 in3.53 mm

N/A 8.234 in209.14 mm

N/A 0.004 in0.10 mm

N/A -267

BS266 PTFE

N/A
189549

N/A BS Standard O-Ring

N/A PTFE

N/A 0.139 in3.53 mm

N/A 7.984 in202.79 mm

N/A 0.004 in0.10 mm

N/A -266

BS265 PTFE

N/A
189550

N/A BS Standard O-Ring

N/A PTFE

N/A 0.139 in3.53 mm

N/A 7.734 in196.44 mm

N/A 0.004 in0.10 mm

N/A -265

BS264 PTFE

N/A
189551

N/A BS Standard O-Ring

N/A PTFE

N/A 0.139 in3.53 mm

N/A 7.484 in190.09 mm

N/A 0.004 in0.10 mm

N/A -264

BS263 PTFE

N/A
189552

N/A BS Standard O-Ring

N/A PTFE

N/A 0.139 in3.53 mm

N/A 7.234 in183.74 mm

N/A 0.004 in0.10 mm

N/A -263

BS262 PTFE

N/A
189553

N/A BS Standard O-Ring

N/A PTFE

N/A 0.139 in3.53 mm

N/A 6.984 in177.39 mm

N/A 0.004 in0.10 mm

N/A -262

BS261 PTFE

N/A
189554

N/A BS Standard O-Ring

N/A PTFE

N/A 0.139 in3.53 mm

N/A 6.734 in171.04 mm

N/A 0.004 in0.10 mm

N/A -261

BS275 PTFE

N/A
189555

N/A BS Standard O-Ring

N/A PTFE

N/A 0.139 in3.53 mm

N/A 6.484 in164.69 mm

N/A 0.004 in0.10 mm

N/A -275

BS259 PTFE

N/A
189556

N/A BS Standard O-Ring

N/A PTFE

N/A 0.139 in3.53 mm

N/A 6.234 in158.34 mm

N/A 0.004 in0.10 mm

N/A -259

BS258 PTFE

N/A
189557

N/A BS Standard O-Ring

N/A PTFE

N/A 0.139 in3.53 mm

N/A 5.984 in151.99 mm

N/A 0.004 in0.10 mm

N/A -258

BS257 PTFE

N/A
189558

N/A BS Standard O-Ring

N/A PTFE

N/A 0.139 in3.53 mm

N/A 5.859 in148.82 mm

N/A 0.004 in0.10 mm

N/A -257

BS256 PTFE

N/A
189559

N/A BS Standard O-Ring

N/A PTFE

N/A 0.139 in3.53 mm

N/A 5.734 in145.64 mm

N/A 0.004 in0.10 mm

N/A -256

BS255 PTFE

N/A
189560

N/A BS Standard O-Ring

N/A PTFE

N/A 0.139 in3.53 mm

N/A 5.759 in142.47 mm

N/A 0.004 in0.10 mm

N/A -255