Do you need to find the sizes of an O-Ring out?

The JIOrings’ sizing cone will allow you to determine quickly and accurately O-rings sizes from the AS568 British-American Standard, starting from inside diameter Ø7,65 until Ø142,24. Follow the below steps to get it done accurately.

1º – Identification of the thickness

Put the OR in the groove closest to its thickness.

Check the corresponding measurement.

2º –  Identification of the inside diameter

Set the cone up with the right thickness groove in front of you.

Make the OR slide in to the cone until it fits a rung and read the stated number.

3º- Check the list below

This allows you to determine the match between the number and the inside diameter:


AS 568 Ø ins.