What are the plastic connectors called (for glassware)?

Question

I can't remember for the life of me, and google isn't making it easy. e.g. the things labeled 24/40 etc., as in this picture:

DSVA · Accepted Answer · 2017-06-28 21:18:18Z

17

Those are called Keck Clips. 24/40 is the size of the joint.

answered Jun 28 '17 at 21:18

DSVA

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$\begingroup$ in mm, I guess? $\endgroup$ – khaverim Jun 28 '17 at 21:23
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$\begingroup$ @khaverim very likely, as it is a Swiss idea (worldwide.espacenet.com/publicationDetails/…) $\endgroup$ – Buttonwood Jun 28 '17 at 21:26
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$\begingroup$ Yes more or less, it's not the exact value. en.wikipedia.org/wiki/Ground_glass_joint describes the different types and the german wikipedia page actually shows the biggest diameter mm values. It's all in ISO 383 $\endgroup$ – DSVA Jun 28 '17 at 21:27
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$\begingroup$ I used to call them "bethesda clamps". Gamers will know. $\endgroup$ – andselisk♦ Jun 29 '17 at 12:07

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Zhe · Accepted Answer · 2017-06-28 21:18:31Z

6

They are called Keck clamps.

answered Jun 28 '17 at 21:18

Zhe

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$\begingroup$ There are versions in metal, too; like vaporbrothers.com/Metal-Keck-Clip-19mm_ProductID_8766 $\endgroup$ – Buttonwood Jun 28 '17 at 21:31
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$\begingroup$ They are clips not clamps $\endgroup$ – James Dealon Jun 28 '17 at 22:02
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$\begingroup$ @JamesDealon Please direct your comment to ChemGlass. I don't have strong feelings about the name. The important part is "Keck." $\endgroup$ – Zhe Jun 28 '17 at 23:43

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Phillip · Accepted Answer · 2017-06-30 09:08:07Z

The clips are named after Hermann Keck - Chemistry World's Classic Kit columnist, Andrea Sella, spoke to him to get the story of the invention before he died a few years ago. https://www.chemistryworld.com/opinion/classic-kit-keck-clip/3004921.article

3 Answers 3