# Dif-e-Yo O-ring replacement **URL:** \ **Category:** Yo-Yo Mods and Maintenance\ **Created:** [August 5, 2026, 8:21pm UTC](https://forums.yoyoexpert.com/t/dif-e-yo-o-ring-replacement/450455 "2026-08-05T20:21:57Z")\ **Posts on this page:** 11\ **Page:** 2
**Author:** ![SlowThrow](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/slowthrow/32/307451_2.png) [@SlowThrow](https://forums.yoyoexpert.com/u/SlowThrow)\ **Post date:** [August 6, 2026, 10:04pm UTC](https://forums.yoyoexpert.com/t/dif-e-yo-o-ring-replacement/450455/21 "2026-08-06T22:04:12Z")
My apologies, I didn’t mean to come off with attitude lol, I’m like 99.87% sure it’s not silicone, it just feels more dense and isn’t as shiney, see below. ![image](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/8/7/1/87162b1418709fbd4f81d9f0aeaada1e78927c88.jpeg) ![image](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/e/9/e/e9e2bcd3cbf4f6d01d28b58345a1bf51f56d9cd7.jpeg) ![image](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/5/c/4/5c47d426a6f5712555b2687eb7df93983688c5cd.jpeg) ![image](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/3/1/3/313027e0852a77391f5b41f01a7fc87f89e98e51.jpeg) ![image](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/1/e/3/1e31ebc3c54f4967807e87250c48b3542f79af8a.jpeg) ![image](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/d/9/6/d964b540dccbe9e1e8b68759146c054a05be1d76.jpeg) I don’t know the fancy maths to figure out the density tho ---
**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:** [August 6, 2026, 10:09pm UTC](https://forums.yoyoexpert.com/t/dif-e-yo-o-ring-replacement/450455/22 "2026-08-06T22:09:45Z")
Didn’t think you had an attitude or anything anyway haha. It just reminded me of this cheap scrungy silicone I bought which has a matte texture ![IMG_3651](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/3/3/6/336d31ded8524035475692678ebe9e51310ffbad.jpeg) ---
**Author:** ![SlowThrow](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/slowthrow/32/307451_2.png) [@SlowThrow](https://forums.yoyoexpert.com/u/SlowThrow)\ **Post date:** [August 6, 2026, 10:12pm UTC](https://forums.yoyoexpert.com/t/dif-e-yo-o-ring-replacement/450455/23 "2026-08-06T22:12:00Z")
Wow that does look very similar! Perhaps I am mistaken ---
**Author:** ![Tempura](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/tempura/32/246135_2.png) [@Tempura](https://forums.yoyoexpert.com/u/Tempura)\ **Post date:** [August 6, 2026, 10:43pm UTC](https://forums.yoyoexpert.com/t/dif-e-yo-o-ring-replacement/450455/24 "2026-08-06T22:43:00Z")
Put silicone oil on it and see if it dissolves hehehe If you think it’s silicone then try to melt it. ---
**Author:** ![Simyo](https://avatars.discourse-cdn.com/v4/letter/s/858c86/32.png) [@Simyo](https://forums.yoyoexpert.com/u/Simyo)\ **Post date:** [August 6, 2026, 10:43pm UTC](https://forums.yoyoexpert.com/t/dif-e-yo-o-ring-replacement/450455/25 "2026-08-06T22:43:10Z")
Can you do standard measurements as well, those seem like a nonstandard metric size ---
**Author:** ![Simyo](https://avatars.discourse-cdn.com/v4/letter/s/858c86/32.png) [@Simyo](https://forums.yoyoexpert.com/u/Simyo)\ **Post date:** [August 6, 2026, 10:58pm UTC](https://forums.yoyoexpert.com/t/dif-e-yo-o-ring-replacement/450455/26 "2026-08-06T22:58:42Z")
Standard didn’t look like it had a good conversion but this seems close [McMaster-Carr](https://www.mcmaster.com/product/3799N116) ---
**Author:** ![SlowThrow](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/slowthrow/32/307451_2.png) [@SlowThrow](https://forums.yoyoexpert.com/u/SlowThrow)\ **Post date:** [August 6, 2026, 11:47pm UTC](https://forums.yoyoexpert.com/t/dif-e-yo-o-ring-replacement/450455/27 "2026-08-06T23:47:22Z")
I can measure again in inches. It must be noted that I have no idea if these are the same as op’s, my dif is a completey different model and gen ---
**Author:** ![hsb](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/hsb/32/193274_2.png) [@hsb](https://forums.yoyoexpert.com/u/hsb)\ **Post date:** [August 7, 2026, 12:06am UTC](https://forums.yoyoexpert.com/t/dif-e-yo-o-ring-replacement/450455/28 "2026-08-07T00:06:41Z")
I don’t know if there was a standard among other models, but I think the Gladiator Slave MMXV was unique ![GLDSLV5](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/a/1/0/a101d5aaf421eec31b4365b1f468a8bfe2328d9d.jpeg) ![GLDSLV7](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/f/b/2/fb2169557a946afe00b07e81cb2ac6967a6616fd.jpeg) Pictures from the old site via [archive.org](https://web.archive.org/web/20251011040438/http://dif-e-yo.com/yoyos.htm) ---
**Author:** ![SlowThrow](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/slowthrow/32/307451_2.png) [@SlowThrow](https://forums.yoyoexpert.com/u/SlowThrow)\ **Post date:** [August 7, 2026, 1:13am UTC](https://forums.yoyoexpert.com/t/dif-e-yo-o-ring-replacement/450455/29 "2026-08-07T01:13:41Z")
I can tell those are completely different, my measurements are irrelevant. ---
**Author:** ![jhb8426](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/jhb8426/32/631_2.png) [@jhb8426](https://forums.yoyoexpert.com/u/jhb8426)\ **Post date:** [August 7, 2026, 1:27am UTC](https://forums.yoyoexpert.com/t/dif-e-yo-o-ring-replacement/450455/30 "2026-08-07T01:27:30Z")
> [@zxin](#): > > If anyone has any insight into where Frank could’ve been sourcing these, or if there are any official specs for them, please speak up! O-rings don’t just materialise out of nowhere! I think he got them wherever he could. I’ve had a number of difs and they’ve been mostly black or blue. > [@Simyo](#): > > Can you do standard measurements as well, those seem like a nonstandard metric size Yes, in the U.S. during the time Frank made yoyos inch size was most common. The ones in my GTO are blue. OD is approx. 1&7/8 in. ID is approx. 1.5 in. Thickness is 3/16 in. ---
**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:** [August 7, 2026, 1:32am UTC](https://forums.yoyoexpert.com/t/dif-e-yo-o-ring-replacement/450455/31 "2026-08-07T01:32:33Z")
To get the dash number measure the ID and the cross section and check against this chart and you should be able to figure out what imperial standard they are. > **[1\_OR\_AS568D\_Size-Chart\_EGV4\_21.pdf](https://www.mfpseals.com/sites/d7.mfpseals.com/files/material_data_sheets/1_OR_AS568D_Size-Chart_EGV4_21.pdf)** > > 105.40 KB [Previous page](https://forums.yoyoexpert.com/t/dif-e-yo-o-ring-replacement/450455.md?page=1)