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

BS O-Rings
Unit of Measure
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Item #

IntegrationID

Type

Material

Cross Section Width

Inside Diameter

CSW Tolerance

BS Number

Quantity
BS435 PTFE N/A
189436 		N/A BS Standard O-Ring N/A PTFE N/A 0.275 in6.99 mm N/A 5.725 in145.42 mm N/A 0.006 in0.15 mm N/A -435
BS434 PTFE N/A
189437 		N/A BS Standard O-Ring N/A PTFE N/A 0.275 in6.99 mm N/A 5.75 in142.24 mm N/A 0.006 in0.15 mm N/A -434
BS433 PTFE N/A
189438 		N/A BS Standard O-Ring N/A PTFE N/A 0.275 in6.99 mm N/A 5.475 in139.07 mm N/A 0.006 in0.15 mm N/A -433
BS432 PTFE N/A
189439 		N/A BS Standard O-Ring N/A PTFE N/A 0.275 in6.99 mm N/A 5.350 in135.89 mm N/A 0.006 in0.15 mm N/A -432
BS431 PTFE N/A
189440 		N/A BS Standard O-Ring N/A PTFE N/A 0.275 in6.99 mm N/A 5.225 in132.72 mm N/A 0.006 in0.15 mm N/A -431
BS430 PTFE N/A
189441 		N/A BS Standard O-Ring N/A PTFE N/A 0.275 in6.99 mm N/A 5.100 in129.54 mm N/A 0.006 in0.15 mm N/A -430
BS429 PTFE N/A
189442 		N/A BS Standard O-Ring N/A PTFE N/A 0.275 in6.99 mm N/A 4.975 in126.37 mm N/A 0.006 in0.15 mm N/A -429
BS428 PTFE N/A
189443 		N/A BS Standard O-Ring N/A PTFE N/A 0.275 in6.99 mm N/A 4.850 in123.19 mm N/A 0.006 in0.15 mm N/A -428
BS427 PTFE N/A
189444 		N/A BS Standard O-Ring N/A PTFE N/A 0.275 in6.99 mm N/A 4.725 in120.02 mm N/A 0.006 in0.15 mm N/A -427
BS426 PTFE N/A
189445 		N/A BS Standard O-Ring N/A PTFE N/A 0.275 in6.99 mm N/A 4.75 in116.84 mm N/A 0.006 in0.15 mm N/A -426
BS425 PTFE N/A
189446 		N/A BS Standard O-Ring N/A PTFE N/A 0.275 in6.99 mm N/A 4.475 in113.67 mm N/A 0.006 in0.15 mm N/A -425
BS395 PTFE N/A
189447 		N/A BS Standard O-Ring N/A PTFE N/A 0.210 in5.33 mm N/A 25.940 in658.88 mm N/A 0.005 in0.13 mm N/A -395
BS394 PTFE N/A
189448 		N/A BS Standard O-Ring N/A PTFE N/A 0.210 in5.33 mm N/A 24.940 in633.48 mm N/A 0.005 in0.13 mm N/A -394
BS393 PTFE N/A
189449 		N/A BS Standard O-Ring N/A PTFE N/A 0.210 in5.33 mm N/A 23.940 in758.08 mm N/A 0.005 in0.13 mm N/A -393
BS392 PTFE N/A
189450 		N/A BS Standard O-Ring N/A PTFE N/A 0.210 in5.33 mm N/A 22.940 in582.68 mm N/A 0.005 in0.13 mm N/A -392
BS391 PTFE N/A
189451 		N/A BS Standard O-Ring N/A PTFE N/A 0.210 in5.33 mm N/A 21.955 in557.66 mm N/A 0.005 in0.13 mm N/A -391
BS390 PTFE N/A
189452 		N/A BS Standard O-Ring N/A PTFE N/A 0.210 in5.33 mm N/A 20.955 in532.26 mm N/A 0.005 in0.13 mm N/A -390
BS389 PTFE N/A
189453 		N/A BS Standard O-Ring N/A PTFE N/A 0.210 in5.33 mm N/A 19.955 in506.86 mm N/A 0.005 in0.13 mm N/A -389
BS388 PTFE N/A
189454 		N/A BS Standard O-Ring N/A PTFE N/A 0.210 in5.33 mm N/A 18.955 in481.46 mm N/A 0.005 in0.13 mm N/A -388
BS387 PTFE N/A
189455 		N/A BS Standard O-Ring N/A PTFE N/A 0.210 in5.33 mm N/A 17.955 in456.06 mm N/A 0.005 in0.13 mm N/A -387
BS386 PTFE N/A
189456 		N/A BS Standard O-Ring N/A PTFE N/A 0.210 in5.33 mm N/A 16.955 in430.66 mm N/A 0.005 in0.13 mm N/A -386
BS385 PTFE N/A
189457 		N/A BS Standard O-Ring N/A PTFE N/A 0.210 in5.33 mm N/A 15.955 in405.26 mm N/A 0.005 in0.13 mm N/A -385
BS384 PTFE N/A
189458 		N/A BS Standard O-Ring N/A PTFE N/A 0.210 in5.33 mm N/A 14.975 in380.37 mm N/A 0.005 in0.13 mm N/A -384
BS383 PTFE N/A
189459 		N/A BS Standard O-Ring N/A PTFE N/A 0.210 in5.33 mm N/A 13.975 in354.97 mm N/A 0.005 in0.13 mm N/A -383
BS382 PTFE N/A
189460 		N/A BS Standard O-Ring N/A PTFE N/A 0.210 in5.33 mm N/A 12.975 in329.57 mm N/A 0.005 in0.13 mm N/A -382
Unit of Measure
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