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<p>Dear Stevie,</p>
<p><br>
</p>
<p>I would recommend you to ask some plastics or rubber
manufacturing company if they can cut you a big batch with
specific sizes. When I worked in the Ruhr Museum in Essen I
ordered a little batch of 150 gaskets made of fluorine rubber
which is very resistant to both ethanol an formaldehyde fumes (see
attachment). The nice thing about letting them be made by the
company was that I could customize the size, the material and all
necessary characteristics. Usually the plastics come as long rolls
in different strengths, so the rubber manufacturer just cut the
rings out of the rubber "sheet". Ask some rubber manufacturers
about companies that could help, that's how I got through.</p>
<p><br>
</p>
<p>About the material: <br>
</p>
<p>There is a wide span of materials which are much better that
silicone if you want to contain ethanol. Silicone is permeable to
ethanol. If you are topping-up regularly, it should work fine, but
the ethanol will evaporate with time. Rubbers like EPDM or the
Buna-O (which is NBR) that Andy talked about are much more
suitable for ethanol. The problem with fluorine rubber (beside its
price) is that it is very hard (arround 70-75° Shore) so its not
very elastic, still it has worked out very well.</p>
<p><br>
</p>
<p>To Tonya´s question:</p>
<p>The same counts for the liners, silicone is in this case very
resistant to formaldehyde fumes, but I have not seen pure silicone
cap liners anywhere and it will let ethanol escape at some point.
The GLS 80 jars from Duran have a new special cap with a
silicone/PTFE coated liners that work incredibly good, but they
only fit on that jars:
<a class="moz-txt-link-freetext" href="https://www.dwk.com/duran-pure-gls-80-screw-cap">https://www.dwk.com/duran-pure-gls-80-screw-cap</a></p>
<p>Since Duran makes very good borosilicate jars, I would strongly
recommend to have this in mind. At a certain amount, it would be
possible to manufacture some batch of jars without any filling
markers. As I was informed 3 years ago.</p>
<p><br>
</p>
<p>Hope this helps, all best to both of you!<br>
</p>
<p><br>
</p>
<div class="moz-cite-prefix">Am 03.02.22 um 03:10 schrieb Haff,
Tonya (NCMI, Crace):<br>
</div>
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<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Hi
all,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">On
this topic, I am wondering if any of you have used silicone
liners for jars containing specimens in ETOH/formalin? I
know that silicone holds up better over time than rubber,
but is it preferred over PTFE or F217, if given the choice?
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Cheers,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Tonya<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1
1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span
lang="EN-US"> Nhcoll-l
<a class="moz-txt-link-rfc2396E" href="mailto:nhcoll-l-bounces@mailman.yale.edu"><nhcoll-l-bounces@mailman.yale.edu></a>
<b>On Behalf Of </b>Bentley, Andrew Charles<br>
<b>Sent:</b> Thursday, 3 February 2022 10:41 AM<br>
<b>To:</b> Kennedy-Gold, Stevie
<a class="moz-txt-link-rfc2396E" href="mailto:Kennedy-GoldS@CarnegieMnh.Org"><Kennedy-GoldS@CarnegieMnh.Org></a>;
<a class="moz-txt-link-abbreviated" href="mailto:nhcoll-l@mailman.yale.edu">nhcoll-l@mailman.yale.edu</a><br>
<b>Subject:</b> Re: [Nhcoll-l] Supplier for silicone
based gaskets for (herpetology) specimen jars<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><a name="_GoBack" moz-do-not-send="true"></a><span
lang="EN-US">Stevie<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">We have been using
buna-n durometer gaskets for our Le Parfait and other
gasketed jars for some time now. We order from Manufactured
Rubber Products in Philadelphia (not sure if this is the
same company you referenced) but must admit that we have not
ordered in some time (we still have a large supply of
various sizes). We use these to replace the regular red
rubber gaskets that do not hold up under alcohol
conditions. They function great even though we are slowly
but surely moving away from gasketed jars to jars purchased
from O’Berk - <a
href="https://www.oberk.com/containers/glass/glass-jar"
moz-do-not-send="true" class="moz-txt-link-freetext">
https://www.oberk.com/containers/glass/glass-jar</a>. We
order 8oz, 16oz, 32oz, 64oz, half gallon and gallon jars
with polypropylene/polyethylene lids as attached.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Hope that helps. Happy
to answer any further questions.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Andy<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<div>
<div>
<p class="MsoNormal"><span style="color:black" lang="EN-US">
A : A : A :<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black" lang="EN-US"> }<(((_°>.,.,.,.}<(((_°>.,.,.,.}<)))_°><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black" lang="EN-US">
V V V<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black" lang="EN-US">Andy
Bentley<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black" lang="EN-US">Ichthyology
Collection Manager<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black" lang="EN-US">University
of Kansas<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black" lang="EN-US">Biodiversity
Institute<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black" lang="EN-US">Dyche
Hall<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black" lang="EN-US">1345
Jayhawk Boulevard<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black" lang="EN-US">Lawrence,
KS, 66045-7561<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black" lang="EN-US">USA<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black" lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black" lang="EN-US">Tel:
(785) 864-3863<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black" lang="EN-US">Fax:
(785) 864-5335 <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black" lang="EN-US">Email: <a
href="mailto:abentley@ku.edu" moz-do-not-send="true"><span
style="color:blue">abentley@ku.edu</span></a> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black" lang="EN-US"><a
href="http://ichthyology.biodiversity.ku.edu/"
moz-do-not-send="true"><span style="color:blue">http://ichthyology.biodiversity.ku.edu</span></a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black" lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black" lang="EN-US">
A : A : A :<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black" lang="EN-US"> }<(((_°>.,.,.,.}<(((_°>.,.,.,.}<)))_°><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black" lang="EN-US">
V V V<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<div style="border:none;border-top:solid #B5C4DF
1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span
style="font-size:12.0pt;color:black" lang="EN-US">From:
</span></b><span style="font-size:12.0pt;color:black"
lang="EN-US">Nhcoll-l <<a
href="mailto:nhcoll-l-bounces@mailman.yale.edu"
moz-do-not-send="true" class="moz-txt-link-freetext">nhcoll-l-bounces@mailman.yale.edu</a>>
on behalf of "Kennedy-Gold, Stevie" <<a
href="mailto:Kennedy-GoldS@CarnegieMnh.Org"
moz-do-not-send="true" class="moz-txt-link-freetext">Kennedy-GoldS@CarnegieMnh.Org</a>><br>
<b>Date: </b>Wednesday, February 2, 2022 at 3:47 PM<br>
<b>To: </b>"<a href="mailto:nhcoll-l@mailman.yale.edu"
moz-do-not-send="true" class="moz-txt-link-freetext">nhcoll-l@mailman.yale.edu</a>"
<<a href="mailto:nhcoll-l@mailman.yale.edu"
moz-do-not-send="true" class="moz-txt-link-freetext">nhcoll-l@mailman.yale.edu</a>><br>
<b>Subject: </b>[Nhcoll-l] Supplier for silicone based
gaskets for (herpetology) specimen jars<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
</div>
<p class="MsoNormal"><span lang="EN-US">Hello all,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The herpetology section
is looking for a reliable supplier for silicone based
gaskets. We use various sized glass Le Parfait jars to house
our wet (70% ethanol) specimens. We previously purchased
from Philly Rubber, but I have not received any replies to
my recent inquiries. I would be extremely grateful for any
recommendations for reasonably priced, reliable gasket
suppliers!<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Thank you in advance!
Responses can also be sent off-list.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:white"><span
style="color:#201F1E" lang="EN-US">Stevie<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><b><i><span
style="color:#201F1E" lang="EN-US"><o:p> </o:p></span></i></b></p>
<p class="MsoNormal" style="background:white"><b><span
style="color:#201F1E" lang="EN-US">Stevie Kennedy-Gold</span></b><span
style="color:#201F1E" lang="EN-US"> (she/her/hers)<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span
style="color:#201F1E" lang="EN-US">Collection Manager of
Section of Amphibians and Reptiles<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span
style="color:#201F1E" lang="EN-US">Carnegie Museum of
Natural History<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span
style="color:#201F1E" lang="EN-US">4400 Forbes Ave.<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span
style="color:#201F1E" lang="EN-US">Pittsburgh, PA 15213<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span
style="color:#201F1E" lang="EN-US">Phone: (412) 353-4690<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span
style="color:#201F1E" lang="EN-US">Email:
<a href="mailto:kennedy-golds@carnegiemnh.org"
moz-do-not-send="true" class="moz-txt-link-freetext">kennedy-golds@carnegiemnh.org</a><i><o:p></o:p></i></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Due to the ongoing
COVID-19 pandemic, the section has limited personnel
available working onsite. As such,
<b>only</b> return loans with prior notification. Thank you
for your cooperation, and apologies for any inconvenience.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><br>
<br>
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