[Nhcoll-l] Putty For Sealing Jars

[Dirk Neumann]

Hi James,

happy new year to South Kensington!

My recommendation is Alsirol; Fisher Scientific is listing it https://www.fishersci.de/shop/products/joint-grease-1/10130201
But you may order directly from Pöllath Laborbedarf: https://www.fishersci.de/shop/products/joint-grease-1/10130201

Very greasy joint grease that works very well on uneven historic cylinders and even battery jars. Easy to remove, easy to reapply. Very stable in the long run.

Application on Figure 19d in our fluid book; second screen shot shows how the grease can be build up on uneven surfaces (battery jar).

Hope this helps - more offline, if you like
Dirk



[cid:part1.Dfy2wEw9.rDtNxkwc at leibniz-lib.de]
[cid:part2.j7JMNJ2D.nItpOL1V at leibniz-lib.de]


Am 11.01.2023 um 13:09 schrieb James Maclaine:
Dear all,

Happy New Year!

Hope someone can help with a large jar sealing question.  In the past we have used a kind of putty (made by Arboseal) to seal flat glass plates to the top of some of our largest jars and containers.  This was especially useful in the case of some of the older jars where the top is not completely flat and the putty could fill in the gaps.  It isn’t an ideal solution (and makes opening the jar a bit of a chore) and in some cases the putty has hardened and cracked but on the whole it has fairly effectively slowed down evaporation over several decades.

However, in the cases where the old putty has to be replaced I can no longer find the same brand for sale online, so can anyone tell me where I can purchase something similar and reliable that I could use for this?  Or ideally, let me know of a better way of sealing a flat lid on an uneven jar top (please don’t suggest stretching parafilm over it!).

As these are large containers for specimens that would be difficult to find alternative storage for (see attached), I’d like to keep using them if possible.  They would also be prohibitively expensive to replace.

Any suggestions would be much appreciated.

Cheers,

James






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Dirk Neumann
Collection Manager, Hamburg

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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 Wappelhorst
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