# Yoyo bearing that is mostly air/liquid tight **URL:** \ **Category:** Yo-Yo Mods and Maintenance\ **Created:** [April 27, 2026, 11:37pm UTC](https://forums.yoyoexpert.com/t/yoyo-bearing-that-is-mostly-air-liquid-tight/444612 "2026-04-27T23:37:54Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Yoyoda](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/yoyoda/32/678449_2.png) [@Yoyoda](https://forums.yoyoexpert.com/u/Yoyoda)\ **Post date:** [April 27, 2026, 11:37pm UTC](https://forums.yoyoexpert.com/t/yoyo-bearing-that-is-mostly-air-liquid-tight/444612/1 "2026-04-27T23:37:54Z")
I’m looking for fluid/liquid bearings that are size c I’m pretty sure they don’t exist but I’m wondering if there is size c bearings that are mosty air tight / liquid tight so I can try putting galinstan in it (as an experiment) ---
**Author:** ![Yospeedracer](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/yospeedracer/32/164176_2.png) [@Yospeedracer](https://forums.yoyoexpert.com/u/Yospeedracer)\ **Post date:** [April 27, 2026, 11:53pm UTC](https://forums.yoyoexpert.com/t/yoyo-bearing-that-is-mostly-air-liquid-tight/444612/2 "2026-04-27T23:53:09Z")
I’m all for experimenting, but just FYI, some of the smoothest and longest spinning bearings I’ve used in so many different yo-yos over the years are manufactured by NSK. Specifically, the gold and platinum plated bearings. They are not sealed and run bone dry. Best bearings I’ve ever used in a yoyo ---
**Author:** ![Yoyoda](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/yoyoda/32/678449_2.png) [@Yoyoda](https://forums.yoyoexpert.com/u/Yoyoda)\ **Post date:** [April 28, 2026, 12:09am UTC](https://forums.yoyoexpert.com/t/yoyo-bearing-that-is-mostly-air-liquid-tight/444612/3 "2026-04-28T00:09:23Z")
Ik air tight or tight fitted shields cause friction slowing it down but this is more of a prototype design for tests so I can than later make a custom bearing ---
**Author:** ![AudreySickburn](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/audreysickburn/32/313292_2.png) [@AudreySickburn](https://forums.yoyoexpert.com/u/AudreySickburn)\ **Post date:** [April 28, 2026, 12:18am UTC](https://forums.yoyoexpert.com/t/yoyo-bearing-that-is-mostly-air-liquid-tight/444612/4 "2026-04-28T00:18:21Z")
you would have better luck buying some rubber shielded R188 bearings and then doing whatever you wanted and reinstalling the rubber shields and sealing them somehow. IMO. ---
**Author:** ![Yoyoda](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/yoyoda/32/678449_2.png) [@Yoyoda](https://forums.yoyoexpert.com/u/Yoyoda)\ **Post date:** [April 28, 2026, 12:37am UTC](https://forums.yoyoexpert.com/t/yoyo-bearing-that-is-mostly-air-liquid-tight/444612/5 "2026-04-28T00:37:20Z")
Thanks ---
**Author:** ![Captrogers](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/captrogers/32/647012_2.png) [@Captrogers](https://forums.yoyoexpert.com/u/Captrogers)\ **Post date:** [April 28, 2026, 12:56am UTC](https://forums.yoyoexpert.com/t/yoyo-bearing-that-is-mostly-air-liquid-tight/444612/6 "2026-04-28T00:56:32Z")
Love the idea but note any additive to the bearing will reduce spin time ---
**Author:** ![washyjoshe](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/washyjoshe/32/612061_2.png) [@washyjoshe](https://forums.yoyoexpert.com/u/washyjoshe)\ **Post date:** [April 28, 2026, 2:13pm UTC](https://forums.yoyoexpert.com/t/yoyo-bearing-that-is-mostly-air-liquid-tight/444612/7 "2026-04-28T14:13:24Z")
I was kinda looking into this, I abandoned looking. @AudreySickburn’s idea of the cleaning rubber sealed r188 bearings was my best bet. > [@Rubber bearing shields](https://forums.yoyoexpert.com/t/rubber-bearing-shields/435318): > > Has anyone bought rubber shields to see if it would help a dry bearing stay clean, or even isolate the noise of a dry bearing? Been wondering this for a while, and I didn’t want to hijack the deepest state thread.