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British Standard O-Rings are very similar to Standard O-Rings in the fact that they are both standardized imperically. The British Standard however, incorporates some extended sizes in the 1/4" nominal cross section group for an even broader application range. British Standard O-Rings serve a variety of industries including aerospace, paint, food, and chemical transport. Perfluoroelastomer is also known as FKKM and Perfloro.

Parts resist over 1,800 different chemicals, while offering the high temperature stability of PTFE (327°C). They’re used in aggressive chemical processing, pharmaceutical, oil rcovery, gas recovery, and aerospace applications. The proven, long-term performance of Kalrez® parts can mean less repairs, seal changes, inspections and equipment uptime for greater productivity and yield. For more information, please see: Comparison Properties Chart, PTFE Encapsulated O-rings, Material Shelf Life, and O-ring Groove Design Chart.
BS O-Rings
Unit of Measure
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Item #

IntegrationID

Type

Material

Cross Section Width

Durometer

Inside Diameter

CSW Tolerance

BS Number

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O-Ring Industries

Quantity
BS229 KALREZ-75 N/A
187734
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.139 in3.53 mm N/A 75 N/A 2.359 in59.92 mm N/A 0.004 in0.10 mm N/A -229 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS228 KALREZ-75 N/A
187735
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.139 in3.53 mm N/A 75 N/A 2.234 in56.74 mm N/A 0.004 in0.10 mm N/A -228 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS227 KALREZ-75 N/A
187736
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.139 in3.53 mm N/A 75 N/A 2.109 in53.57 mm N/A 0.004 in0.10 mm N/A -227 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS226 KALREZ-75 N/A
187737
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.139 in3.53 mm N/A 75 N/A 1.984 in50.39 mm N/A 0.004 in0.10 mm N/A -226 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS225 KALREZ-75 N/A
187738
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.139 in3.53 mm N/A 75 N/A 1.859 in47.22 mm N/A 0.004 in0.10 mm N/A -225 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS224 KALREZ-75 N/A
187739
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.139 in3.53 mm N/A 75 N/A 1.734 in44.04 mm N/A 0.004 in0.10 mm N/A -224 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS223 KALREZ-75 N/A
187740
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.139 in3.53 mm N/A 75 N/A 1.759 in44.68 mm N/A 0.004 in0.10 mm N/A -223 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS222 KALREZ-75 N/A
187741
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.139 in3.53 mm N/A 75 N/A 1.484 in37.69 mm N/A 0.004 in0.10 mm N/A -222 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS221 KALREZ-75 N/A
187742
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.139 in3.53 mm N/A 75 N/A 1.421 in36.09 mm N/A 0.004 in0.10 mm N/A -221 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS220 KALREZ-75 N/A
187743
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.139 in3.53 mm N/A 75 N/A 1.359 in34.52 mm N/A 0.004 in0.10 mm N/A -220 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS219 KALREZ-75 N/A
187744
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.139 in3.53 mm N/A 75 N/A 1.296 in32.92 mm N/A 0.004 in0.10 mm N/A -219 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS218 KALREZ-75 N/A
187745
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.139 in3.53 mm N/A 75 N/A 1.234 in31.34 mm N/A 0.004 in0.10 mm N/A -218 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS217 KALREZ-75 N/A
187746
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.139 in3.53 mm N/A 75 N/A 1.171 in29.74 mm N/A 0.004 in0.10 mm N/A -217 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS216 KALREZ-75 N/A
187747
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.139 in3.53 mm N/A 75 N/A 1.109 in28.17 mm N/A 0.004 in0.10 mm N/A -216 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS215 KALREZ-75 N/A
187748
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.139 in3.53 mm N/A 75 N/A 1.046 in26.57 mm N/A 0.004 in0.10 mm N/A -215 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS214 KALREZ-75 N/A
187749
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.139 in3.53 mm N/A 75 N/A 0.984 in24.99 mm N/A 0.004 in0.10 mm N/A -214 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS213 KALREZ-75 N/A
187750
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.139 in3.53 mm N/A 75 N/A 0.921 in23.39 mm N/A 0.004 in0.10 mm N/A -213 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS212 KALREZ-75 N/A
187751
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.139 in3.53 mm N/A 75 N/A 0.859 in21.82 mm N/A 0.004 in0.10 mm N/A -212 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS211 KALREZ-75 N/A
187752
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.139 in3.53 mm N/A 75 N/A 0.796 in20.22 mm N/A 0.004 in0.10 mm N/A -211 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS210 KALREZ-75 N/A
187753
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.139 in3.53 mm N/A 75 N/A 0.734 in18.64 mm N/A 0.004 in0.10 mm N/A -210 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS209 KALREZ-75 N/A
187754
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.139 in3.53 mm N/A 75 N/A 0.672 in17.07 mm N/A 0.004 in0.10 mm N/A -209 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS208 KALREZ-75 N/A
187755
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.139 in3.53 mm N/A 75 N/A 0.759 in19.28 mm N/A 0.004 in0.10 mm N/A -208 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS207 KALREZ-75 N/A
187756
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.139 in3.53 mm N/A 75 N/A 0.549 in13.94 mm N/A 0.004 in0.10 mm N/A -207 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS206 KALREZ-75 N/A
187757
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.139 in3.53 mm N/A 75 N/A 0.484 in12.29 mm N/A 0.004 in0.10 mm N/A -206 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS205 KALREZ-75 N/A
187758
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.139 in3.53 mm N/A 75 N/A 0.421 in10.69 mm N/A 0.004 in0.10 mm N/A -205 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
Unit of Measure
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