How to Measure an O Ring (with only basic tools) 

Thanks for the knowledge. Much helping. How about measure the big size ORing using digital caliper ? Thank you 🙏🙏🙏🙏

Very helpful information.

Thanks for your video.

Ok but this assumes that the ring is perfectly round and not squeezed in any way….

How to measure o ring for BOP NRV VALVES

is there a simple way to measure the hardness (shore)?

👍

Why measure the cross section at all? I just measure the ID and the OD and the difference is the CS. I find measuring the CS is difficult because of the curves especially on smaller orings. While measuring the OD and ID is as easy as laying the oring on a ruler and aligning one end with the 0.