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
BS204 S-70	N/A 186370	N/A BS Standard O-Ring	N/A Silicone	N/A 0.139 in3.53 mm	N/A 70	N/A 0.359 in9.12 mm	N/A 0.004 in0.10 mm	N/A -204
BS203 S-70	N/A 186371	N/A BS Standard O-Ring	N/A Silicone	N/A 0.139 in3.53 mm	N/A 70	N/A 0.296 in7.52 mm	N/A 0.004 in0.10 mm	N/A -203
BS202 S-70	N/A 186372	N/A BS Standard O-Ring	N/A Silicone	N/A 0.139 in3.53 mm	N/A 70	N/A 0.234 in5.94 mm	N/A 0.004 in0.10 mm	N/A -202
BS201 S-70	N/A 186373	N/A BS Standard O-Ring	N/A Silicone	N/A 0.139 in3.53 mm	N/A 70	N/A 0.171 in4.34 mm	N/A 0.004 in0.10 mm	N/A -201
BS178 S-70	N/A 186374	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 9.737 in247.32 mm	N/A 0.003 in0.08 mm	N/A -178
BS177 S-70	N/A 186375	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 9.487 in240.97 mm	N/A 0.003 in0.08 mm	N/A -177
BS176 S-70	N/A 186376	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 9.237 in234.62 mm	N/A 0.003 in0.08 mm	N/A -176
BS175 S-70	N/A 186377	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 8.987 in228.27 mm	N/A 0.003 in0.08 mm	N/A -175
BS174 S-70	N/A 186378	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 8.737 in221.92 mm	N/A 0.003 in0.08 mm	N/A -174
BS173 S-70	N/A 186379	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 8.487 in215.57 mm	N/A 0.003 in0.08 mm	N/A -173
BS172 S-70	N/A 186380	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 8.237 in209.22 mm	N/A 0.003 in0.08 mm	N/A -172
BS171 S-70	N/A 186381	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 7.987 in202.87 mm	N/A 0.003 in0.08 mm	N/A -171
BS170 S-70	N/A 186382	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 7.737 in196.52 mm	N/A 0.003 in0.08 mm	N/A -170
BS169 S-70	N/A 186383	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 7.487 in190.17 mm	N/A 0.003 in0.08 mm	N/A -169
BS168 S-70	N/A 186384	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 7.237 in183.82 mm	N/A 0.003 in0.08 mm	N/A -168
BS167 S-70	N/A 186385	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 6.987 in177.47 mm	N/A 0.003 in0.08 mm	N/A -167
BS166 S-70	N/A 186386	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 6.737 in171.12 mm	N/A 0.003 in0.08 mm	N/A -166
BS165 S-70	N/A 186387	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 6.487 in164.77 mm	N/A 0.003 in0.08 mm	N/A -165
BS164 S-70	N/A 186388	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 6.237 in158.42 mm	N/A 0.003 in0.08 mm	N/A -164
BS163 S-70	N/A 186389	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 5.987 in152.07 mm	N/A 0.003 in0.08 mm	N/A -163
BS162 S-70	N/A 186390	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 5.737 in145.72 mm	N/A 0.003 in0.08 mm	N/A -162
BS161 S-70	N/A 186391	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 5.487 in139.37 mm	N/A 0.003 in0.08 mm	N/A -161
BS160 S-70	N/A 186392	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 5.237 in133.02 mm	N/A 0.003 in0.08 mm	N/A -160
BS159 S-70	N/A 186393	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 4.987 in126.67 mm	N/A 0.003 in0.08 mm	N/A -159
BS158 S-70	N/A 186394	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 4.737 in120.32 mm	N/A 0.003 in0.08 mm	N/A -158

N/A
186370

N/A BS Standard O-Ring

N/A Silicone

N/A 0.139 in3.53 mm

N/A 70

N/A 0.359 in9.12 mm

N/A 0.004 in0.10 mm

N/A -204

BS203 S-70

N/A
186371

N/A BS Standard O-Ring

N/A Silicone

N/A 0.139 in3.53 mm

N/A 70

N/A 0.296 in7.52 mm

N/A 0.004 in0.10 mm

N/A -203

BS202 S-70

N/A
186372

N/A BS Standard O-Ring

N/A Silicone

N/A 0.139 in3.53 mm

N/A 70

N/A 0.234 in5.94 mm

N/A 0.004 in0.10 mm

N/A -202

BS201 S-70

N/A
186373

N/A BS Standard O-Ring

N/A Silicone

N/A 0.139 in3.53 mm

N/A 70

N/A 0.171 in4.34 mm

N/A 0.004 in0.10 mm

N/A -201

BS178 S-70

N/A
186374

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 9.737 in247.32 mm

N/A 0.003 in0.08 mm

N/A -178

BS177 S-70

N/A
186375

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 9.487 in240.97 mm

N/A 0.003 in0.08 mm

N/A -177

BS176 S-70

N/A
186376

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 9.237 in234.62 mm

N/A 0.003 in0.08 mm

N/A -176

BS175 S-70

N/A
186377

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 8.987 in228.27 mm

N/A 0.003 in0.08 mm

N/A -175

BS174 S-70

N/A
186378

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 8.737 in221.92 mm

N/A 0.003 in0.08 mm

N/A -174

BS173 S-70

N/A
186379

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 8.487 in215.57 mm

N/A 0.003 in0.08 mm

N/A -173

BS172 S-70

N/A
186380

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 8.237 in209.22 mm

N/A 0.003 in0.08 mm

N/A -172

BS171 S-70

N/A
186381

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 7.987 in202.87 mm

N/A 0.003 in0.08 mm

N/A -171

BS170 S-70

N/A
186382

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 7.737 in196.52 mm

N/A 0.003 in0.08 mm

N/A -170

BS169 S-70

N/A
186383

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 7.487 in190.17 mm

N/A 0.003 in0.08 mm

N/A -169

BS168 S-70

N/A
186384

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 7.237 in183.82 mm

N/A 0.003 in0.08 mm

N/A -168

BS167 S-70

N/A
186385

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 6.987 in177.47 mm

N/A 0.003 in0.08 mm

N/A -167

BS166 S-70

N/A
186386

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 6.737 in171.12 mm

N/A 0.003 in0.08 mm

N/A -166

BS165 S-70

N/A
186387

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 6.487 in164.77 mm

N/A 0.003 in0.08 mm

N/A -165

BS164 S-70

N/A
186388

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 6.237 in158.42 mm

N/A 0.003 in0.08 mm

N/A -164

BS163 S-70

N/A
186389

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 5.987 in152.07 mm

N/A 0.003 in0.08 mm

N/A -163

BS162 S-70

N/A
186390

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 5.737 in145.72 mm

N/A 0.003 in0.08 mm

N/A -162

BS161 S-70

N/A
186391

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 5.487 in139.37 mm

N/A 0.003 in0.08 mm

N/A -161

BS160 S-70

N/A
186392

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 5.237 in133.02 mm

N/A 0.003 in0.08 mm

N/A -160

BS159 S-70

N/A
186393

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 4.987 in126.67 mm

N/A 0.003 in0.08 mm

N/A -159

BS158 S-70

N/A
186394

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 4.737 in120.32 mm

N/A 0.003 in0.08 mm

N/A -158