# Mondial O-ring size?
**URL:** https://forums.yoyoexpert.com/t/mondial-o-ring-size/335595
**Category:** Yo-Yo Mods and Maintenance
**Created:** [March 16, 2021, 1:24pm UTC](https://forums.yoyoexpert.com/t/mondial-o-ring-size/335595 "2021-03-16T13:24:15Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@chrismacg](https://forums.yoyoexpert.com/u/chrismacg)
#### Post date: [March 16, 2021, 1:24pm UTC](https://forums.yoyoexpert.com/t/mondial-o-ring-size/335595/1 "2021-03-16T13:24:15Z")
I’ve got an old Duncan Mondial without the o-rings. I’d like to find some new ones which shouldn’t be too hard, but I’m unsure what size I’d need. Does anyone know what size o-rings I should be looking for?
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### Author:  [@Exmime](https://forums.yoyoexpert.com/u/Exmime)
#### Post date: [March 16, 2021, 1:33pm UTC](https://forums.yoyoexpert.com/t/mondial-o-ring-size/335595/2 "2021-03-16T13:33:10Z")
@rickbr was just on here the other day, he might have a more definitive answer, but its listed on the Museum of Yo-Yo history with a diameter of 62mm so that would be around 2 and 3/8" imperial.
> **[Museum of Yo-Yo History](http://www.yoyomuseum.com/museum_view.php?action=view&subaction=exhibit&exhibitid=2785)**
>
> You have found the most comprehensive archive of yo-yo images, historical memorabilia, and information in the world. Whether you're a long-time yo-yo collector, or just looking for that long lost treasure from your childhood, this is the place. In...
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### Author:  [@jhb8426](https://forums.yoyoexpert.com/u/jhb8426)
#### Post date: [March 16, 2021, 8:29pm UTC](https://forums.yoyoexpert.com/t/mondial-o-ring-size/335595/3 "2021-03-16T20:29:53Z")
You could just take it to the hardware store and try some on for size.
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### Author:  [@chrismacg](https://forums.yoyoexpert.com/u/chrismacg)
#### Post date: [March 16, 2021, 8:41pm UTC](https://forums.yoyoexpert.com/t/mondial-o-ring-size/335595/4 "2021-03-16T20:41:06Z")
That’s the plan for this weekend! 🤣