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Author: Subject: Looking for a replacement PTFE stopcock plug w/ 10mm bore, 24/40 profile
SuperOxide
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[*] posted on 16-1-2025 at 07:36
Looking for a replacement PTFE stopcock plug w/ 10mm bore, 24/40 profile


I went to purchase a piece of Chemglass glassware off of Ebay, but the part was listed as missing the stopcock.
I initially thought I could replace it with some other stopcock, maybe even one that I already have. But after looking into it, the stopcock size it uses is a bit difficult to find for a reasonable price.

On the chemglass website, it lists the part as "CG-424-71 - 10mm PTFE Plug Only, 24/40", and its selling for $127.90.

Obviously a non-CG brand replacement would be ideal, but whenever I find websites selling replacements, they sell the same thing but for more $ (I suppose im looking for a substitute, notreplacement...)

If anyone has one of these that they could sell for a reasonable price, or know where I could find one, I would greatly appreciate it.

[Edited on 16-1-2025 by SuperOxide]

Edit: The best I've found is product SM-1540-PTFE-158 on the SciMac website, but even that would be over $80 after shipping.

[Edited on 16-1-2025 by SuperOxide]
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Texium
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[*] posted on 16-1-2025 at 08:08


Still not great, but it’s $56.10 here: https://scimac.com/products/stopcocks/ptfe-stopcock-plugs/st...



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SuperOxide
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[*] posted on 16-1-2025 at 09:19


Quote: Originally posted by Texium  
Still not great, but it’s $56.10 here: https://scimac.com/products/stopcocks/ptfe-stopcock-plugs/st...

Hm, I wonder what the differences between what you linked and what I linked. The page I linked to is titled Straight Bore PTFE Stopcock Plugswith PTFE Handle & Nut, but both pages include handles and nuts.
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Texium
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[*] posted on 16-1-2025 at 09:27


I think the one you linked has a solid PTFE handle and nut, while the one I linked has those parts made of something cheaper, most likely HDPE. That shouldn’t matter in most cases though.



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Dr.Bob
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[*] posted on 16-1-2025 at 18:37


I have couple Kimex (I think) stopcocks that appear to be what you want, they are 24 mm at the narrow end, 40 mm long, but only have a 8mm bore, which should be work for anything less thick than concrete. I took as many photos as I could get, and posted 4. I would be happy to do one for $25 or 2 for $40, plus postage, likely $5 or so. I am happy to throw some free samples or whatever does not add to the postage, since it is such a small item.


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SuperOxide
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[*] posted on 18-1-2025 at 13:50


Quote: Originally posted by Dr.Bob  
I have couple Kimex (I think) stopcocks that appear to be what you want, they are 24 mm at the narrow end, 40 mm long, but only have a 8mm bore, which should be work for anything less thick than concrete. I took as many photos as I could get, and posted 4. I would be happy to do one for $25 or 2 for $40, plus postage, likely $5 or so. I am happy to throw some free samples or whatever does not add to the postage, since it is such a small item.




You're awesome. Ill take both. I could potentially widen the bore on one of them if it's ever necessary.
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