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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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