[Nhcoll-l] Material of rubber seal

[Adam Rountrey]

Our newer cabinet door gaskets (Delta cabinets) are 60 durometer silicone.
There are some gasket materials that have been subjected to Oddy tests on
the Combined Materials Testing database -
https://www.conservation-wiki.com/wiki/Project:Combined_Materials_Testing_Results_(Search_Builder)
-Adam



On Thu, Nov 20, 2025 at 8:57 AM Shoobs, Nate <shoobs.1 at osu.edu> wrote:

> Hey Lennart,
> This topic has come up on the list recently. Institutions in the US tend
> to be using either Buna-N (a kind of synthetic nitrile rubber), or ethylene
> propylene diene monomer (EPDM) which is another synthetic rubber
> replacement.
>
> Both have good longevity and track record compared to traditional rubber
> gaskets, for replacing the gaskets on bail-top jars. If you search the
> NHColl archive, I believe there were some European list members who sent in
> manufacturers in Europe.
>
> But hopefully some others closer to you can advise!
> Best,
> Nate
>
>
> -
> *Nathaniel F. Shoobs, *Curator of Mollusks
> College of Arts & Sciences Dept. of Evolution, Ecology, and Organismal
> Biology, The Ohio State University
> Museum of Biological Diversity
> 1315 Kinnear Rd, Columbus, OH 43212
> 614-688-1342 (Office)
> mbd.osu.edu
> ------------------------------
> *From:* Nhcoll-l <nhcoll-l-bounces at mailman.yale.edu> on behalf of Lennart
> Lennuk <Lennart.Lennuk at loodusmuuseum.ee>
> *Sent:* Thursday, November 20, 2025 8:41:15 AM
> *To:* nhcoll-l at mailman.yale.edu <nhcoll-l at mailman.yale.edu>
> *Subject:* [Nhcoll-l] Material of rubber seal
>
> Hi! What material should collection storage rubber seals are of? They
> should be archival quality, non-acid off-gassing. Lennart Lennuk Head of
> collections Estonian Museum of Natural History 00372 5656 9916 Lennart.
> lennuk@ loodusmuuseum. ee ‍ ‍
>
> Hi!
>
> What material should collection storage rubber seals are of?
> They should be archival quality, non-acid off-gassing.
>
>
>
>
>
> Lennart Lennuk
>
> Head of collections
>
> Estonian Museum of Natural History
>
> 00372 5656 9916
>
> Lennart.lennuk at loodusmuuseum.ee
>
>
>
>
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