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
BS546 S-70	N/A 186145	N/A BS Standard O-Ring	N/A Silicone	N/A 0.070 in1.78 mm	N/A 70	N/A 4.86 in123.44 mm	N/A 0.003 in0.08 mm	N/A -546
BS544 S-70	N/A 186146	N/A BS Standard O-Ring	N/A Silicone	N/A 0.070 in1.78 mm	N/A 70	N/A 4.61 in117.09 mm	N/A 0.003 in0.08 mm	N/A -544
BS542 S-70	N/A 186147	N/A BS Standard O-Ring	N/A Silicone	N/A 0.070 in1.78 mm	N/A 70	N/A 4.36 in110.74 mm	N/A 0.003 in0.08 mm	N/A -542
BS540 S-70	N/A 186148	N/A BS Standard O-Ring	N/A Silicone	N/A 0.070 in1.78 mm	N/A 70	N/A 4.110 in104.39 mm	N/A 0.003 in0.08 mm	N/A -540
BS538 S-70	N/A 186149	N/A BS Standard O-Ring	N/A Silicone	N/A 0.070 in1.78 mm	N/A 70	N/A 3.86 in98.04 mm	N/A 0.003 in0.08 mm	N/A -538
BS536 S-70	N/A 186150	N/A BS Standard O-Ring	N/A Silicone	N/A 0.070 in1.78 mm	N/A 70	N/A 3.61 in91.69 mm	N/A 0.003 in0.08 mm	N/A -536
BS534 S-70	N/A 186151	N/A BS Standard O-Ring	N/A Silicone	N/A 0.070 in1.78 mm	N/A 70	N/A 3.36 in85.34 mm	N/A 0.003 in0.08 mm	N/A -534
BS532 S-70	N/A 186152	N/A BS Standard O-Ring	N/A Silicone	N/A 0.070 in1.78 mm	N/A 70	N/A 3.11 in78.99 mm	N/A 0.003 in0.08 mm	N/A -532
BS519 S-70	N/A 186153	N/A BS Standard O-Ring	N/A Silicone	N/A 0.070 in1.78 mm	N/A 70	N/A 1.553 in39.45 mm	N/A 0.003 in0.08 mm	N/A -519
BS517 S-70	N/A 186154	N/A BS Standard O-Ring	N/A Silicone	N/A 0.070 in1.78 mm	N/A 70	N/A 1.428 in36.27 mm	N/A 0.003 in0.08 mm	N/A -517
BS475 S-70	N/A 186155	N/A BS Standard O-Ring	N/A Silicone	N/A 0.275 in6.99 mm	N/A 70	N/A 25.9401 in658.88 mm	N/A 0.006 in0.15 mm	N/A -475
BS474 S-70	N/A 186156	N/A BS Standard O-Ring	N/A Silicone	N/A 0.275 in6.99 mm	N/A 70	N/A 24.940 in633.48 mm	N/A 0.006 in0.15 mm	N/A -474
BS473 S-70	N/A 186157	N/A BS Standard O-Ring	N/A Silicone	N/A 0.275 in6.99 mm	N/A 70	N/A 23.940 in608.08 mm	N/A 0.006 in0.15 mm	N/A -473
BS472 S-70	N/A 186158	N/A BS Standard O-Ring	N/A Silicone	N/A 0.275 in6.99 mm	N/A 70	N/A 22.940 in582.68 mm	N/A 0.006 in0.15 mm	N/A -472
BS471 S-70	N/A 186159	N/A BS Standard O-Ring	N/A Silicone	N/A 0.275 in6.99 mm	N/A 70	N/A 21.955 in557.66 mm	N/A 0.006 in0.15 mm	N/A -471
BS470 S-70	N/A 186160	N/A BS Standard O-Ring	N/A Silicone	N/A 0.275 in6.99 mm	N/A 70	N/A 20.955 in532.26 mm	N/A 0.006 in0.15 mm	N/A -470
BS469 S-70	N/A 186161	N/A BS Standard O-Ring	N/A Silicone	N/A 0.275 in6.99 mm	N/A 70	N/A 19.955 in506.86 mm	N/A 0.006 in0.15 mm	N/A -469
BS468 S-70	N/A 186162	N/A BS Standard O-Ring	N/A Silicone	N/A 0.275 in6.99 mm	N/A 70	N/A 19.455 in494.16 mm	N/A 0.006 in0.15 mm	N/A -468
BS467 S-70	N/A 186163	N/A BS Standard O-Ring	N/A Silicone	N/A 0.275 in6.99 mm	N/A 70	N/A 18.955 in481.46 mm	N/A 0.006 in0.15 mm	N/A -467
BS466 S-70	N/A 186164	N/A BS Standard O-Ring	N/A Silicone	N/A 0.275 in6.99 mm	N/A 70	N/A 18.455 in468.76 mm	N/A 0.006 in0.15 mm	N/A -466
BS465 S-70	N/A 186165	N/A BS Standard O-Ring	N/A Silicone	N/A 0.275 in6.99 mm	N/A 70	N/A 17.955 in456.06 mm	N/A 0.006 in0.15 mm	N/A -465
BS464 S-70	N/A 186166	N/A BS Standard O-Ring	N/A Silicone	N/A 0.275 in6.99 mm	N/A 70	N/A 17.455 in443.36 mm	N/A 0.006 in0.15 mm	N/A -464
BS463 S-70	N/A 186167	N/A BS Standard O-Ring	N/A Silicone	N/A 0.275 in6.99 mm	N/A 70	N/A 16.9551 in430.66 mm	N/A 0.006 in0.15 mm	N/A -463
BS462 S-70	N/A 186168	N/A BS Standard O-Ring	N/A Silicone	N/A 0.275 in6.99 mm	N/A 70	N/A 16.455 in417.96 mm	N/A 0.006 in0.15 mm	N/A -462
BS461 S-70	N/A 186169	N/A BS Standard O-Ring	N/A Silicone	N/A 0.275 in6.99 mm	N/A 70	N/A 15.9551 in405.26 mm	N/A 0.006 in0.15 mm	N/A -461

N/A
186145

N/A BS Standard O-Ring

N/A Silicone

N/A 0.070 in1.78 mm

N/A 70

N/A 4.86 in123.44 mm

N/A 0.003 in0.08 mm

N/A -546

BS544 S-70

N/A
186146

N/A BS Standard O-Ring

N/A Silicone

N/A 0.070 in1.78 mm

N/A 70

N/A 4.61 in117.09 mm

N/A 0.003 in0.08 mm

N/A -544

BS542 S-70

N/A
186147

N/A BS Standard O-Ring

N/A Silicone

N/A 0.070 in1.78 mm

N/A 70

N/A 4.36 in110.74 mm

N/A 0.003 in0.08 mm

N/A -542

BS540 S-70

N/A
186148

N/A BS Standard O-Ring

N/A Silicone

N/A 0.070 in1.78 mm

N/A 70

N/A 4.110 in104.39 mm

N/A 0.003 in0.08 mm

N/A -540

BS538 S-70

N/A
186149

N/A BS Standard O-Ring

N/A Silicone

N/A 0.070 in1.78 mm

N/A 70

N/A 3.86 in98.04 mm

N/A 0.003 in0.08 mm

N/A -538

BS536 S-70

N/A
186150

N/A BS Standard O-Ring

N/A Silicone

N/A 0.070 in1.78 mm

N/A 70

N/A 3.61 in91.69 mm

N/A 0.003 in0.08 mm

N/A -536

BS534 S-70

N/A
186151

N/A BS Standard O-Ring

N/A Silicone

N/A 0.070 in1.78 mm

N/A 70

N/A 3.36 in85.34 mm

N/A 0.003 in0.08 mm

N/A -534

BS532 S-70

N/A
186152

N/A BS Standard O-Ring

N/A Silicone

N/A 0.070 in1.78 mm

N/A 70

N/A 3.11 in78.99 mm

N/A 0.003 in0.08 mm

N/A -532

BS519 S-70

N/A
186153

N/A BS Standard O-Ring

N/A Silicone

N/A 0.070 in1.78 mm

N/A 70

N/A 1.553 in39.45 mm

N/A 0.003 in0.08 mm

N/A -519

BS517 S-70

N/A
186154

N/A BS Standard O-Ring

N/A Silicone

N/A 0.070 in1.78 mm

N/A 70

N/A 1.428 in36.27 mm

N/A 0.003 in0.08 mm

N/A -517

BS475 S-70

N/A
186155

N/A BS Standard O-Ring

N/A Silicone

N/A 0.275 in6.99 mm

N/A 70

N/A 25.9401 in658.88 mm

N/A 0.006 in0.15 mm

N/A -475

BS474 S-70

N/A
186156

N/A BS Standard O-Ring

N/A Silicone

N/A 0.275 in6.99 mm

N/A 70

N/A 24.940 in633.48 mm

N/A 0.006 in0.15 mm

N/A -474

BS473 S-70

N/A
186157

N/A BS Standard O-Ring

N/A Silicone

N/A 0.275 in6.99 mm

N/A 70

N/A 23.940 in608.08 mm

N/A 0.006 in0.15 mm

N/A -473

BS472 S-70

N/A
186158

N/A BS Standard O-Ring

N/A Silicone

N/A 0.275 in6.99 mm

N/A 70

N/A 22.940 in582.68 mm

N/A 0.006 in0.15 mm

N/A -472

BS471 S-70

N/A
186159

N/A BS Standard O-Ring

N/A Silicone

N/A 0.275 in6.99 mm

N/A 70

N/A 21.955 in557.66 mm

N/A 0.006 in0.15 mm

N/A -471

BS470 S-70

N/A
186160

N/A BS Standard O-Ring

N/A Silicone

N/A 0.275 in6.99 mm

N/A 70

N/A 20.955 in532.26 mm

N/A 0.006 in0.15 mm

N/A -470

BS469 S-70

N/A
186161

N/A BS Standard O-Ring

N/A Silicone

N/A 0.275 in6.99 mm

N/A 70

N/A 19.955 in506.86 mm

N/A 0.006 in0.15 mm

N/A -469

BS468 S-70

N/A
186162

N/A BS Standard O-Ring

N/A Silicone

N/A 0.275 in6.99 mm

N/A 70

N/A 19.455 in494.16 mm

N/A 0.006 in0.15 mm

N/A -468

BS467 S-70

N/A
186163

N/A BS Standard O-Ring

N/A Silicone

N/A 0.275 in6.99 mm

N/A 70

N/A 18.955 in481.46 mm

N/A 0.006 in0.15 mm

N/A -467

BS466 S-70

N/A
186164

N/A BS Standard O-Ring

N/A Silicone

N/A 0.275 in6.99 mm

N/A 70

N/A 18.455 in468.76 mm

N/A 0.006 in0.15 mm

N/A -466

BS465 S-70

N/A
186165

N/A BS Standard O-Ring

N/A Silicone

N/A 0.275 in6.99 mm

N/A 70

N/A 17.955 in456.06 mm

N/A 0.006 in0.15 mm

N/A -465

BS464 S-70

N/A
186166

N/A BS Standard O-Ring

N/A Silicone

N/A 0.275 in6.99 mm

N/A 70

N/A 17.455 in443.36 mm

N/A 0.006 in0.15 mm

N/A -464

BS463 S-70

N/A
186167

N/A BS Standard O-Ring

N/A Silicone

N/A 0.275 in6.99 mm

N/A 70

N/A 16.9551 in430.66 mm

N/A 0.006 in0.15 mm

N/A -463

BS462 S-70

N/A
186168

N/A BS Standard O-Ring

N/A Silicone

N/A 0.275 in6.99 mm

N/A 70

N/A 16.455 in417.96 mm

N/A 0.006 in0.15 mm

N/A -462

BS461 S-70

N/A
186169

N/A BS Standard O-Ring

N/A Silicone

N/A 0.275 in6.99 mm

N/A 70

N/A 15.9551 in405.26 mm

N/A 0.006 in0.15 mm

N/A -461