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	Product Guides
BS806 S-70	N/A 186095	N/A BS Standard O-Ring	N/A Silicone	N/A 0.070 in1.78 mm	N/A 70	N/A 0.437 in11.10 mm	N/A 0.003 in0.08 mm	N/A -806	N/A Seal Guides
BS804 S-70	N/A 186096	N/A BS Standard O-Ring	N/A Silicone	N/A 0.070 in1.78 mm	N/A 70	N/A 0.313 in7.94 mm	N/A 0.003 in0.08 mm	N/A -804	N/A Seal Guides
BS803 S-70	N/A 186097	N/A BS Standard O-Ring	N/A Silicone	N/A 0.070 in1.78 mm	N/A 70	N/A 0.25 in6.35 mm	N/A 0.003 in0.08 mm	N/A -803	N/A Seal Guides
BS802 S-70	N/A 186098	N/A BS Standard O-Ring	N/A Silicone	N/A 0.070 in1.78 mm	N/A 70	N/A 0.187 in4.75 mm	N/A 0.003 in0.08 mm	N/A -802	N/A Seal Guides
BS801 S-70	N/A 186099	N/A BS Standard O-Ring	N/A Silicone	N/A 0.070 in1.78 mm	N/A 70	N/A 0.125 in3.18 mm	N/A 0.003 in0.08 mm	N/A -801	N/A Seal Guides
BS650 S-70	N/A 186100	N/A BS Standard O-Ring	N/A Silicone	N/A 0.275 in6.99 mm	N/A 70	N/A 13.225 in335.92 mm	N/A 0.006 in0.15 mm	N/A -650	N/A Seal Guides
BS649 S-70	N/A 186101	N/A BS Standard O-Ring	N/A Silicone	N/A 0.275 in6.99 mm	N/A 70	N/A 12.725 in323.22 mm	N/A 0.006 in0.15 mm	N/A -649	N/A Seal Guides
BS648 S-70	N/A 186102	N/A BS Standard O-Ring	N/A Silicone	N/A 0.275 in6.99 mm	N/A 70	N/A 12.225 in310.52 mm	N/A 0.006 in0.15 mm	N/A -648	N/A Seal Guides
BS647 S-70	N/A 186103	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 6.85 in173.99 mm	N/A 0.005 in0.13 mm	N/A -647	N/A Seal Guides
BS646 S-70	N/A 186104	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 6.600 in167.64 mm	N/A 0.005 in0.13 mm	N/A -646	N/A Seal Guides
BS645 S-70	N/A 186105	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 6.35 in161.29 mm	N/A 0.005 in0.13 mm	N/A -645	N/A Seal Guides
BS644 S-70	N/A 186106	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 6.100 in154.94 mm	N/A 0.005 in0.13 mm	N/A -644	N/A Seal Guides
BS643 S-70	N/A 186107	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 3.299 in83.79 mm	N/A 0.003 in0.08 mm	N/A -643	N/A Seal Guides
BS642 S-70	N/A 186108	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 3.174 in80.62 mm	N/A 0.003 in0.08 mm	N/A -642	N/A Seal Guides
BS641 S-70	N/A 186109	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 3.049 in77.44 mm	N/A 0.003 in0.08 mm	N/A -641	N/A Seal Guides
BS640 S-70	N/A 186110	N/A BS Standard O-Ring	N/A Silicone	N/A 0.103 in2.62 mm	N/A 70	N/A 2.924 in74.27 mm	N/A 0.003 in0.08 mm	N/A -640	N/A Seal Guides
BS628 S-70	N/A 186111	N/A BS Standard O-Ring	N/A Silicone	N/A 0.275 in6.99 mm	N/A 70	N/A 6.563 in166.70 mm	N/A 0.006 in0.15 mm	N/A -628	N/A Seal Guides
BS627 S-70	N/A 186112	N/A BS Standard O-Ring	N/A Silicone	N/A 0.275 in6.99 mm	N/A 70	N/A 6.281 in159.54 mm	N/A 0.006 in0.15 mm	N/A -627	N/A Seal Guides
BS626 S-70	N/A 186113	N/A BS Standard O-Ring	N/A Silicone	N/A 0.275 in6.99 mm	N/A 70	N/A 5.297 in134.54 mm	N/A 0.006 in0.15 mm	N/A -626	N/A Seal Guides
BS625 S-70	N/A 186114	N/A BS Standard O-Ring	N/A Silicone	N/A 0.275 in6.99 mm	N/A 70	N/A 4.906 in124.61 mm	N/A 0.006 in0.15 mm	N/A -625	N/A Seal Guides
BS624 S-70	N/A 186115	N/A BS Standard O-Ring	N/A Silicone	N/A 0.275 in6.99 mm	N/A 70	N/A 4.516 in114.71 mm	N/A 0.006 in0.15 mm	N/A -624	N/A Seal Guides
BS623 S-70	N/A 186116	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 4.313 in109.54 mm	N/A 0.005 in0.13 mm	N/A -623	N/A Seal Guides
BS622 S-70	N/A 186117	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 3.937 in100.00 mm	N/A 0.005 in0.13 mm	N/A -622	N/A Seal Guides
BS621 S-70	N/A 186118	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 3.531 in89.69 mm	N/A 0.005 in0.13 mm	N/A -621	N/A Seal Guides
BS620 S-70	N/A 186119	N/A BS Standard O-Ring	N/A Silicone	N/A 0.210 in5.33 mm	N/A 70	N/A 3.141 in79.78 mm	N/A 0.005 in0.13 mm	N/A -620	N/A Seal Guides

N/A
186095

N/A BS Standard O-Ring

N/A Silicone

N/A 0.070 in1.78 mm

N/A 70

N/A 0.437 in11.10 mm

N/A 0.003 in0.08 mm

N/A -806

N/A Seal Guides

BS804 S-70

N/A
186096

N/A BS Standard O-Ring

N/A Silicone

N/A 0.070 in1.78 mm

N/A 70

N/A 0.313 in7.94 mm

N/A 0.003 in0.08 mm

N/A -804

N/A Seal Guides

BS803 S-70

N/A
186097

N/A BS Standard O-Ring

N/A Silicone

N/A 0.070 in1.78 mm

N/A 70

N/A 0.25 in6.35 mm

N/A 0.003 in0.08 mm

N/A -803

N/A Seal Guides

BS802 S-70

N/A
186098

N/A BS Standard O-Ring

N/A Silicone

N/A 0.070 in1.78 mm

N/A 70

N/A 0.187 in4.75 mm

N/A 0.003 in0.08 mm

N/A -802

N/A Seal Guides

BS801 S-70

N/A
186099

N/A BS Standard O-Ring

N/A Silicone

N/A 0.070 in1.78 mm

N/A 70

N/A 0.125 in3.18 mm

N/A 0.003 in0.08 mm

N/A -801

N/A Seal Guides

BS650 S-70

N/A
186100

N/A BS Standard O-Ring

N/A Silicone

N/A 0.275 in6.99 mm

N/A 70

N/A 13.225 in335.92 mm

N/A 0.006 in0.15 mm

N/A -650

N/A Seal Guides

BS649 S-70

N/A
186101

N/A BS Standard O-Ring

N/A Silicone

N/A 0.275 in6.99 mm

N/A 70

N/A 12.725 in323.22 mm

N/A 0.006 in0.15 mm

N/A -649

N/A Seal Guides

BS648 S-70

N/A
186102

N/A BS Standard O-Ring

N/A Silicone

N/A 0.275 in6.99 mm

N/A 70

N/A 12.225 in310.52 mm

N/A 0.006 in0.15 mm

N/A -648

N/A Seal Guides

BS647 S-70

N/A
186103

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 6.85 in173.99 mm

N/A 0.005 in0.13 mm

N/A -647

N/A Seal Guides

BS646 S-70

N/A
186104

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 6.600 in167.64 mm

N/A 0.005 in0.13 mm

N/A -646

N/A Seal Guides

BS645 S-70

N/A
186105

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 6.35 in161.29 mm

N/A 0.005 in0.13 mm

N/A -645

N/A Seal Guides

BS644 S-70

N/A
186106

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 6.100 in154.94 mm

N/A 0.005 in0.13 mm

N/A -644

N/A Seal Guides

BS643 S-70

N/A
186107

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 3.299 in83.79 mm

N/A 0.003 in0.08 mm

N/A -643

N/A Seal Guides

BS642 S-70

N/A
186108

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 3.174 in80.62 mm

N/A 0.003 in0.08 mm

N/A -642

N/A Seal Guides

BS641 S-70

N/A
186109

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 3.049 in77.44 mm

N/A 0.003 in0.08 mm

N/A -641

N/A Seal Guides

BS640 S-70

N/A
186110

N/A BS Standard O-Ring

N/A Silicone

N/A 0.103 in2.62 mm

N/A 70

N/A 2.924 in74.27 mm

N/A 0.003 in0.08 mm

N/A -640

N/A Seal Guides

BS628 S-70

N/A
186111

N/A BS Standard O-Ring

N/A Silicone

N/A 0.275 in6.99 mm

N/A 70

N/A 6.563 in166.70 mm

N/A 0.006 in0.15 mm

N/A -628

N/A Seal Guides

BS627 S-70

N/A
186112

N/A BS Standard O-Ring

N/A Silicone

N/A 0.275 in6.99 mm

N/A 70

N/A 6.281 in159.54 mm

N/A 0.006 in0.15 mm

N/A -627

N/A Seal Guides

BS626 S-70

N/A
186113

N/A BS Standard O-Ring

N/A Silicone

N/A 0.275 in6.99 mm

N/A 70

N/A 5.297 in134.54 mm

N/A 0.006 in0.15 mm

N/A -626

N/A Seal Guides

BS625 S-70

N/A
186114

N/A BS Standard O-Ring

N/A Silicone

N/A 0.275 in6.99 mm

N/A 70

N/A 4.906 in124.61 mm

N/A 0.006 in0.15 mm

N/A -625

N/A Seal Guides

BS624 S-70

N/A
186115

N/A BS Standard O-Ring

N/A Silicone

N/A 0.275 in6.99 mm

N/A 70

N/A 4.516 in114.71 mm

N/A 0.006 in0.15 mm

N/A -624

N/A Seal Guides

BS623 S-70

N/A
186116

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 4.313 in109.54 mm

N/A 0.005 in0.13 mm

N/A -623

N/A Seal Guides

BS622 S-70

N/A
186117

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 3.937 in100.00 mm

N/A 0.005 in0.13 mm

N/A -622

N/A Seal Guides

BS621 S-70

N/A
186118

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 3.531 in89.69 mm

N/A 0.005 in0.13 mm

N/A -621

N/A Seal Guides

BS620 S-70

N/A
186119

N/A BS Standard O-Ring

N/A Silicone

N/A 0.210 in5.33 mm

N/A 70

N/A 3.141 in79.78 mm

N/A 0.005 in0.13 mm

N/A -620

N/A Seal Guides