Sciencemadness Discussion Board

What size rubber stopper fits a 24/40 joint?

evil_lurker - 8-8-2006 at 12:46

Thinking about ordering some, just don't know what size to get.

Magpie - 8-8-2006 at 18:24

evil_lurker,

Here's a photo of a page from an old Fisher catalog - a very handy book to have.

As you probably already know cork stoppers use a different numbering system.

I like to use rubber when it works, but many organic solvents make it swell or otherwise deteriorate. In those cases I use the cork stoppers. I can find some of each at my local hardware stores. They are of poorer quality, however, compared to those of the lab suppliers.

[Edited on 9-8-2006 by Magpie]

EbC: reduced picture size.

[Edited on 26-1-2007 by chemoleo]

rubber.jpg - 51kB

The_Davster - 8-8-2006 at 18:30

I took a different route to figue this out, the 'stick em in and see' route. Size 5.

EDIT: which corresponds nicely to Magpie's table:D

PS: Magpie, Happy 1-post-till-1000:P


[Edited on 9-8-2006 by rogue chemist]