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. PTFE is also known as TFE and Polytetrafluoroethylene. For more information, please see: Comparison Properties Chart, PTFE Encapsulated O-rings, Material Shelf Life, and O-ring Groove Design Chart.
Unit of Measure
Type |
N/A BS Standard O-Ring |
Material |
N/A PTFE |
Cross Section Width |
N/A 0.275 in6.99 mm |
Inside Diameter |
N/A 5.475 in139.07 mm |
CSW Tolerance |
N/A 0.006 in0.15 mm |
BS Number |
N/A -433 |
Warning |
N/A Prop 65 Warning: This product may contain chemicals known to the State of California to cause cancer, and birth defects or other reproductive harm. |
O-Ring Industries |
N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
