BS 4518 O-rings
Chart 72 O-rings
On Chart 72 in our O-ring guide covers:
- BS 4518: Metric dimensions of toroidal sealing rings (O-rings) and their housings
This range is based on a Swedish standard often quoted against NATO requirements. It is still extensively used throughout the UK and other European countries.
If the size you want is not listed in Chart 72 tables, please use the metric columns in our Chart 50.