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
BS157 S-70	N/A 186395	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 4.487 in113.97 mm	N/A 0.003 in0.08 mm	N/A -157
BS156 S-70	N/A 186396	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 4.237 in107.62 mm	N/A 0.003 in0.08 mm	N/A -156
BS155 S-70	N/A 186397	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 3.987 in101.27 mm	N/A 0.003 in0.08 mm	N/A -155
BS154 S-70	N/A 186398	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 3.737 in94.92 mm	N/A 0.003 in0.08 mm	N/A -154
BS153 S-70	N/A 186399	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 3.487 in88.57 mm	N/A 0.003 in0.08 mm	N/A -153
BS152 S-70	N/A 186400	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 3.237 in82.22 mm	N/A 0.003 in0.08 mm	N/A -152
BS151 S-70	N/A 186401	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 2.987 in75.87 mm	N/A 0.003 in0.08 mm	N/A -151
BS150 S-70	N/A 186402	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 2.862 in72.69 mm	N/A 0.003 in0.08 mm	N/A -150
BS149 S-70	N/A 186403	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 2.800 in71.12 mm	N/A 0.003 in0.08 mm	N/A -149
BS148 S-70	N/A 186404	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 2.737 in69.52 mm	N/A 0.003 in0.08 mm	N/A -148
BS147 S-70	N/A 186405	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 2.675 in67.95 mm	N/A 0.003 in0.08 mm	N/A -147
BS146 S-70	N/A 186406	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 2.612 in66.34 mm	N/A 0.003 in0.08 mm	N/A -146
BS145 S-70	N/A 186407	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 2.550 in64.77 mm	N/A 0.003 in0.08 mm	N/A -145
BS144 S-70	N/A 186408	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 2.487 in63.17 mm	N/A 0.003 in0.08 mm	N/A -144
BS143 S-70	N/A 186409	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 2.425 in61.60 mm	N/A 0.003 in0.08 mm	N/A -143
BS142 S-70	N/A 186410	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 2.362 in59.99 mm	N/A 0.003 in0.08 mm	N/A -142
BS141 S-70	N/A 186411	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 2.300 in58.42 mm	N/A 0.003 in0.08 mm	N/A -141
BS140 S-70	N/A 186412	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 2.237 in56.82 mm	N/A 0.003 in0.08 mm	N/A -140
BS139 S-70	N/A 186413	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 2.175 in55.25 mm	N/A 0.003 in0.08 mm	N/A -139
BS138 S-70	N/A 186414	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 2.112 in53.64 mm	N/A 0.003 in0.08 mm	N/A -138
BS137 S-70	N/A 186415	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 2.050 in52.07 mm	N/A 0.003 in0.08 mm	N/A -137
BS136 S-70	N/A 186416	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 1.987 in50.47 mm	N/A 0.003 in0.08 mm	N/A -136
BS135 S-70	N/A 186417	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 1.925 in48.90 mm	N/A 0.003 in0.08 mm	N/A -135
BS134 S-70	N/A 186418	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 1.862 in47.29 mm	N/A 0.003 in0.08 mm	N/A -134
BS133 S-70	N/A 186419	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 1.799 in45.69 mm	N/A 0.003 in0.08 mm	N/A -133

N/A
186395

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 4.487 in113.97 mm

N/A 0.003 in0.08 mm

N/A -157

BS156 S-70

N/A
186396

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 4.237 in107.62 mm

N/A 0.003 in0.08 mm

N/A -156

BS155 S-70

N/A
186397

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 3.987 in101.27 mm

N/A 0.003 in0.08 mm

N/A -155

BS154 S-70

N/A
186398

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 3.737 in94.92 mm

N/A 0.003 in0.08 mm

N/A -154

BS153 S-70

N/A
186399

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 3.487 in88.57 mm

N/A 0.003 in0.08 mm

N/A -153

BS152 S-70

N/A
186400

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 3.237 in82.22 mm

N/A 0.003 in0.08 mm

N/A -152

BS151 S-70

N/A
186401

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 2.987 in75.87 mm

N/A 0.003 in0.08 mm

N/A -151

BS150 S-70

N/A
186402

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 2.862 in72.69 mm

N/A 0.003 in0.08 mm

N/A -150

BS149 S-70

N/A
186403

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 2.800 in71.12 mm

N/A 0.003 in0.08 mm

N/A -149

BS148 S-70

N/A
186404

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 2.737 in69.52 mm

N/A 0.003 in0.08 mm

N/A -148

BS147 S-70

N/A
186405

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 2.675 in67.95 mm

N/A 0.003 in0.08 mm

N/A -147

BS146 S-70

N/A
186406

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 2.612 in66.34 mm

N/A 0.003 in0.08 mm

N/A -146

BS145 S-70

N/A
186407

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 2.550 in64.77 mm

N/A 0.003 in0.08 mm

N/A -145

BS144 S-70

N/A
186408

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 2.487 in63.17 mm

N/A 0.003 in0.08 mm

N/A -144

BS143 S-70

N/A
186409

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 2.425 in61.60 mm

N/A 0.003 in0.08 mm

N/A -143

BS142 S-70

N/A
186410

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 2.362 in59.99 mm

N/A 0.003 in0.08 mm

N/A -142

BS141 S-70

N/A
186411

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 2.300 in58.42 mm

N/A 0.003 in0.08 mm

N/A -141

BS140 S-70

N/A
186412

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 2.237 in56.82 mm

N/A 0.003 in0.08 mm

N/A -140

BS139 S-70

N/A
186413

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 2.175 in55.25 mm

N/A 0.003 in0.08 mm

N/A -139

BS138 S-70

N/A
186414

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 2.112 in53.64 mm

N/A 0.003 in0.08 mm

N/A -138

BS137 S-70

N/A
186415

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 2.050 in52.07 mm

N/A 0.003 in0.08 mm

N/A -137

BS136 S-70

N/A
186416

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 1.987 in50.47 mm

N/A 0.003 in0.08 mm

N/A -136

BS135 S-70

N/A
186417

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 1.925 in48.90 mm

N/A 0.003 in0.08 mm

N/A -135

BS134 S-70

N/A
186418

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 1.862 in47.29 mm

N/A 0.003 in0.08 mm

N/A -134

BS133 S-70

N/A
186419

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 1.799 in45.69 mm

N/A 0.003 in0.08 mm

N/A -133