[Nhcoll-l] [EXTERN] Material of rubber seal

[Andries J. van Dam]

Dear Lennart,

You might also opt for rubber gaskets made EPDM (ethylene-propylene-diene-monomer). For several decades they are successfully used for sealing bail jars at Naturalis Leiden-NL.

Kind regards,

Dries

--

Andries J. van Dam (director)

Alcomon Company
Leliestraat 54
2313BH Leiden
Netherlands

Tel: +31615676299
E-mail: ajvandam at alcomon.com 
Website: http://www.alcomon.com

 

 

 

 

 

 

Van: Nhcoll-l <nhcoll-l-bounces at mailman.yale.edu> namens Dirk Neumann <d.neumann at leibniz-lib.de>
Datum: donderdag 20 november 2025 om 14:52
Aan: <nhcoll-l at mailman.yale.edu>
Onderwerp: Re: [Nhcoll-l] [EXTERN] Material of rubber seal

 

Hi Lennart,

 

if you refer to Le-Perfait gaskets, the baseline should be

 

Replacement gaskets should be made of a durable but elastic synthetic material such as neoprene or Buna-N (acrylonitrile butadiene rubber, also called nitrile).

 

For Europe, there seems to be a vendor in Switzerland (Fabian do you have more details?)

 

With best wishes

Dirk

 

 

Am 20.11.2025 um 14:41 schrieb Lennart Lennuk:

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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-- 
Stiftung Leibniz-Institut zur Analyse des Biodiversitätswandels
Postanschrift: Adenauerallee 127, 53113 Bonn, Germany

Stiftung des öffentlichen Rechts;
Generaldirektion: Prof. Dr. Bernhard Misof (Generaldirektor), Adrian Grüter (Kaufm. Geschäftsführer)
Sitz der Stiftung: Adenauerallee 160 in Bonn
Vorsitzender des Stiftungsrates: Dr. Michael H. Wappelhorst


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