Dif-e-Yo O-ring replacement

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.

I don’t know the fancy maths to figure out the density tho

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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

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Wow that does look very similar! Perhaps I am mistaken

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Put silicone oil on it and see if it dissolves hehehe

If you think it’s silicone then try to melt it.

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Can you do standard measurements as well, those seem like a nonstandard metric size

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Standard didn’t look like it had a good conversion but this seems close McMaster-Carr

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

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I don’t know if there was a standard among other models, but I think the Gladiator Slave MMXV was unique

Pictures from the old site via archive.org

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I can tell those are completely different, my measurements are irrelevant.

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I think he got them wherever he could. I’ve had a number of difs and they’ve been mostly black or blue.

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.

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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.