BS Silicone O-Rings

OneMonroe Silicone O-Rings offer a top-tier sealing solution designed to withstand a wide range of temperatures, chemicals, and environmental conditions. Made from premium silicone materials, these O-rings provide exceptional resilience and durability, making them suitable for various applications in industries such as aerospace, automotive, and medical. Whether you're seeking protection against extreme temperatures, moisture, or harsh chemicals, OneMonroe Silicone O-Rings deliver reliable performance, ensuring a secure and consistent seal in both static and dynamic applications.

Our silicone O-rings are engineered for optimal flexibility and compression, ensuring they maintain their shape and function under both high-stress and low-stress conditions. With an impressive temperature range and resistance to UV, ozone, and many chemicals, they are ideal for challenging environments that demand both strength and adaptability. Available in a range of sizes, our BS Silicone O-Rings offer versatile solutions for both standard and custom applications, ensuring you find the exact fit needed for your specific requirements. We manufacture each O-ring with precision, ensuring that each product meets the highest quality standards.

OneMonroe takes pride in providing reliable sealing solutions that enhance the safety and efficiency of your systems. Our silicone O-rings are carefully tested to ensure consistent quality and performance, providing you with a dependable sealing option that stands the test of time. With our commitment to quality and an extensive selection of sizes and specifications, OneMonroe Silicone O-Rings are the ideal choice for anyone looking to secure their equipment against leaks, contamination, or environmental wear. Choose OneMonroe for a sealing solution that meets your toughest demands and offers exceptional value in performance and durability.

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	Durometer	Inside Diameter	CSW Tolerance	BS Number
BS381 S-70	N/A 186220	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 11.975 in304.17 mm	N/A 0.005 in0.13 mm	N/A -381
BS380 S-70	N/A 186221	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 11.475 in291.47 mm	N/A 0.005 in0.13 mm	N/A -380
BS379 S-70	N/A 186222	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 10.975 in278.77 mm	N/A 0.005 in0.13 mm	N/A -379
BS378 S-70	N/A 186223	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 10.475 in266.07 mm	N/A 0.005 in0.13 mm	N/A -378
BS377 S-70	N/A 186224	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 9.975 in253.37 mm	N/A 0.005 in0.13 mm	N/A -377
BS376 S-70	N/A 186225	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 9.725 in247.02 mm	N/A 0.005 in0.13 mm	N/A -376
BS375 S-70	N/A 186226	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 9.475 in240.67 mm	N/A 0.005 in0.13 mm	N/A -375
BS374 S-70	N/A 186227	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 9.225 in234.32 mm	N/A 0.005 in0.13 mm	N/A -374
BS373 S-70	N/A 186228	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 8.975 in227.97 mm	N/A 0.005 in0.13 mm	N/A -373
BS372 S-70	N/A 186229	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 8.725 in221.62 mm	N/A 0.005 in0.13 mm	N/A -372
BS371 S-70	N/A 186230	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 8.475 in215.27 mm	N/A 0.005 in0.13 mm	N/A -371
BS370 S-70	N/A 186231	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 8.225 in208.92 mm	N/A 0.005 in0.13 mm	N/A -370
BS369 S-70	N/A 186232	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 7.975 in202.57 mm	N/A 0.005 in0.13 mm	N/A -369
BS368 S-70	N/A 186233	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 7.725 in196.22 mm	N/A 0.005 in0.13 mm	N/A -368
BS367 S-70	N/A 186234	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 7.475 in189.87 mm	N/A 0.005 in0.13 mm	N/A -367
BS366 S-70	N/A 186235	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 7.225 in183.52 mm	N/A 0.005 in0.13 mm	N/A -366
BS365 S-70	N/A 186236	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 6.975 in177.17 mm	N/A 0.005 in0.13 mm	N/A -365
BS364 S-70	N/A 186237	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 6.725 in170.82 mm	N/A 0.005 in0.13 mm	N/A -364
BS363 S-70	N/A 186238	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 6.475 in164.47 mm	N/A 0.005 in0.13 mm	N/A -363
BS362 S-70	N/A 186239	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 6.225 in158.12 mm	N/A 0.005 in0.13 mm	N/A -362
BS361 S-70	N/A 186240	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 5.975 in151.77 mm	N/A 0.005 in0.13 mm	N/A -361
BS360 S-70	N/A 186241	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 5.850 in148.59 mm	N/A 0.005 in0.13 mm	N/A -360
BS359 S-70	N/A 186242	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 5.725 in145.42 mm	N/A 0.005 in0.13 mm	N/A -359
BS358 S-70	N/A 186243	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 5.600 in142.24 mm	N/A 0.005 in0.13 mm	N/A -358
BS357 S-70	N/A 186244	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 5.475 in139.07 mm	N/A 0.005 in0.13 mm	N/A -357

N/A
186220

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 11.975 in304.17 mm

N/A 0.005 in0.13 mm

N/A -381

BS380 S-70

N/A
186221

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 11.475 in291.47 mm

N/A 0.005 in0.13 mm

N/A -380

BS379 S-70

N/A
186222

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 10.975 in278.77 mm

N/A 0.005 in0.13 mm

N/A -379

BS378 S-70

N/A
186223

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 10.475 in266.07 mm

N/A 0.005 in0.13 mm

N/A -378

BS377 S-70

N/A
186224

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 9.975 in253.37 mm

N/A 0.005 in0.13 mm

N/A -377

BS376 S-70

N/A
186225

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 9.725 in247.02 mm

N/A 0.005 in0.13 mm

N/A -376

BS375 S-70

N/A
186226

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 9.475 in240.67 mm

N/A 0.005 in0.13 mm

N/A -375

BS374 S-70

N/A
186227

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 9.225 in234.32 mm

N/A 0.005 in0.13 mm

N/A -374

BS373 S-70

N/A
186228

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 8.975 in227.97 mm

N/A 0.005 in0.13 mm

N/A -373

BS372 S-70

N/A
186229

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 8.725 in221.62 mm

N/A 0.005 in0.13 mm

N/A -372

BS371 S-70

N/A
186230

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 8.475 in215.27 mm

N/A 0.005 in0.13 mm

N/A -371

BS370 S-70

N/A
186231

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 8.225 in208.92 mm

N/A 0.005 in0.13 mm

N/A -370

BS369 S-70

N/A
186232

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 7.975 in202.57 mm

N/A 0.005 in0.13 mm

N/A -369

BS368 S-70

N/A
186233

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 7.725 in196.22 mm

N/A 0.005 in0.13 mm

N/A -368

BS367 S-70

N/A
186234

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 7.475 in189.87 mm

N/A 0.005 in0.13 mm

N/A -367

BS366 S-70

N/A
186235

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 7.225 in183.52 mm

N/A 0.005 in0.13 mm

N/A -366

BS365 S-70

N/A
186236

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 6.975 in177.17 mm

N/A 0.005 in0.13 mm

N/A -365

BS364 S-70

N/A
186237

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 6.725 in170.82 mm

N/A 0.005 in0.13 mm

N/A -364

BS363 S-70

N/A
186238

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 6.475 in164.47 mm

N/A 0.005 in0.13 mm

N/A -363

BS362 S-70

N/A
186239

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 6.225 in158.12 mm

N/A 0.005 in0.13 mm

N/A -362

BS361 S-70

N/A
186240

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 5.975 in151.77 mm

N/A 0.005 in0.13 mm

N/A -361

BS360 S-70

N/A
186241

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 5.850 in148.59 mm

N/A 0.005 in0.13 mm

N/A -360

BS359 S-70

N/A
186242

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 5.725 in145.42 mm

N/A 0.005 in0.13 mm

N/A -359

BS358 S-70

N/A
186243

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 5.600 in142.24 mm

N/A 0.005 in0.13 mm

N/A -358

BS357 S-70

N/A
186244

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 5.475 in139.07 mm

N/A 0.005 in0.13 mm

N/A -357