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
BS331 S-70	N/A 186270	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 2.225 in56.52 mm	N/A 0.005 in0.13 mm	N/A -331
BS330 S-70	N/A 186271	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 2.100 in53.34 mm	N/A 0.005 in0.13 mm	N/A -330
BS329 S-70	N/A 186272	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 1.975 in50.17 mm	N/A 0.005 in0.13 mm	N/A -329
BS328 S-70	N/A 186273	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 1.850 in46.99 mm	N/A 0.005 in0.13 mm	N/A -328
BS327 S-70	N/A 186274	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 1.725 in43.82 mm	N/A 0.005 in0.13 mm	N/A -327
BS326 S-70	N/A 186275	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 1.600 in40.64 mm	N/A 0.005 in0.13 mm	N/A -326
BS325 S-70	N/A 186276	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 1.475 in37.47 mm	N/A 0.005 in0.13 mm	N/A -325
BS324 S-70	N/A 186277	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 1.350 in34.29 mm	N/A 0.005 in0.13 mm	N/A -324
BS323 S-70	N/A 186278	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 1.287 in32.69 mm	N/A 0.005 in0.13 mm	N/A -323
BS322 S-70	N/A 186279	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 1.225 in31.12 mm	N/A 0.005 in0.13 mm	N/A -322
BS321 S-70	N/A 186280	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 1.162 in29.51 mm	N/A 0.005 in0.13 mm	N/A -321
BS320 S-70	N/A 186281	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 1.100 in27.94 mm	N/A 0.005 in0.13 mm	N/A -320
BS319 S-70	N/A 186282	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 1.037 in26.34 mm	N/A 0.005 in0.13 mm	N/A -319
BS318 S-70	N/A 186283	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 0.975 in24.77 mm	N/A 0.005 in0.13 mm	N/A -318
BS317 S-70	N/A 186284	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 0.912 in23.16 mm	N/A 0.005 in0.13 mm	N/A -317
BS316 S-70	N/A 186285	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 0.850 in21.59 mm	N/A 0.005 in0.13 mm	N/A -316
BS315 S-70	N/A 186286	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 0.787 in19.99 mm	N/A 0.005 in0.13 mm	N/A -315
BS314 S-70	N/A 186287	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 0.725 in18.42 mm	N/A 0.005 in0.13 mm	N/A -314
BS313 S-70	N/A 186288	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 0.662 in16.81 mm	N/A 0.005 in0.13 mm	N/A -313
BS312 S-70	N/A 186289	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 0.600 in15.24 mm	N/A 0.005 in0.13 mm	N/A -312
BS311 S-70	N/A 186290	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 0.537 in13.64 mm	N/A 0.005 in0.13 mm	N/A -311
BS310 S-70	N/A 186291	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 0.475 in12.07 mm	N/A 0.005 in0.13 mm	N/A -310
BS309 S-70	N/A 186292	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 0.412 in10.46 mm	N/A 0.005 in0.13 mm	N/A -309
BS281 S-70	N/A 186293	N/A BS Standard O-Ring	N/A Silicone	N/A 0.139 in3.53 mm	N/A 70	N/A 14.984 in380.59 mm	N/A 0.004 in0.10 mm	N/A -281
BS280 S-70	N/A 186294	N/A BS Standard O-Ring	N/A Silicone	N/A 0.139 in3.53 mm	N/A 70	N/A 13.984 in355.19 mm	N/A 0.004 in0.10 mm	N/A -280

N/A
186270

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 2.225 in56.52 mm

N/A 0.005 in0.13 mm

N/A -331

BS330 S-70

N/A
186271

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 2.100 in53.34 mm

N/A 0.005 in0.13 mm

N/A -330

BS329 S-70

N/A
186272

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 1.975 in50.17 mm

N/A 0.005 in0.13 mm

N/A -329

BS328 S-70

N/A
186273

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 1.850 in46.99 mm

N/A 0.005 in0.13 mm

N/A -328

BS327 S-70

N/A
186274

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 1.725 in43.82 mm

N/A 0.005 in0.13 mm

N/A -327

BS326 S-70

N/A
186275

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 1.600 in40.64 mm

N/A 0.005 in0.13 mm

N/A -326

BS325 S-70

N/A
186276

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 1.475 in37.47 mm

N/A 0.005 in0.13 mm

N/A -325

BS324 S-70

N/A
186277

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 1.350 in34.29 mm

N/A 0.005 in0.13 mm

N/A -324

BS323 S-70

N/A
186278

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 1.287 in32.69 mm

N/A 0.005 in0.13 mm

N/A -323

BS322 S-70

N/A
186279

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 1.225 in31.12 mm

N/A 0.005 in0.13 mm

N/A -322

BS321 S-70

N/A
186280

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 1.162 in29.51 mm

N/A 0.005 in0.13 mm

N/A -321

BS320 S-70

N/A
186281

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 1.100 in27.94 mm

N/A 0.005 in0.13 mm

N/A -320

BS319 S-70

N/A
186282

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 1.037 in26.34 mm

N/A 0.005 in0.13 mm

N/A -319

BS318 S-70

N/A
186283

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 0.975 in24.77 mm

N/A 0.005 in0.13 mm

N/A -318

BS317 S-70

N/A
186284

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 0.912 in23.16 mm

N/A 0.005 in0.13 mm

N/A -317

BS316 S-70

N/A
186285

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 0.850 in21.59 mm

N/A 0.005 in0.13 mm

N/A -316

BS315 S-70

N/A
186286

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 0.787 in19.99 mm

N/A 0.005 in0.13 mm

N/A -315

BS314 S-70

N/A
186287

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 0.725 in18.42 mm

N/A 0.005 in0.13 mm

N/A -314

BS313 S-70

N/A
186288

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 0.662 in16.81 mm

N/A 0.005 in0.13 mm

N/A -313

BS312 S-70

N/A
186289

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 0.600 in15.24 mm

N/A 0.005 in0.13 mm

N/A -312

BS311 S-70

N/A
186290

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 0.537 in13.64 mm

N/A 0.005 in0.13 mm

N/A -311

BS310 S-70

N/A
186291

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 0.475 in12.07 mm

N/A 0.005 in0.13 mm

N/A -310

BS309 S-70

N/A
186292

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 0.412 in10.46 mm

N/A 0.005 in0.13 mm

N/A -309

BS281 S-70

N/A
186293

N/A BS Standard O-Ring

N/A Silicone

N/A 0.139 in3.53 mm

N/A 70

N/A 14.984 in380.59 mm

N/A 0.004 in0.10 mm

N/A -281

BS280 S-70

N/A
186294

N/A BS Standard O-Ring

N/A Silicone

N/A 0.139 in3.53 mm

N/A 70

N/A 13.984 in355.19 mm

N/A 0.004 in0.10 mm

N/A -280