Ganoderma Posted July 12, 2006 Report Share Posted July 12, 2006 I am looking for jars and at one of teh stores here i noticed some used different seals. this got me thinking ( i am no chem whiz) bout the various sovents used in the jars and what they may do to the seals. I am curious about mainly the formalin and plastic. what about the common red rubber type seals, are they ok? i assume most stuff is safe with alcohol seen as they are stored in plastic. Quote Link to comment Share on other sites More sharing options...
Mercedes Benzene Posted July 13, 2006 Report Share Posted July 13, 2006 Ummm... I can help you with the chemistry part of this "problem", but I am not exactly sure what you are asking?What do you want to know about these jars?:) Quote Link to comment Share on other sites More sharing options...
Ganoderma Posted July 13, 2006 Author Report Share Posted July 13, 2006 oh sorry. i was wonderin if any of teh more common fixatives/preservatives will degrade teh rubber/plastic seals in jars. i have not doen much preserving so i dont know if there are sepcial materials made for this purpose. will formalin or alcohol (ethyl or iso) harm the seals? thanks :) Quote Link to comment Share on other sites More sharing options...
Mercedes Benzene Posted July 13, 2006 Report Share Posted July 13, 2006 Well... unfortunately, I could not tell you unless I knew what the rubber was made of. You see, there are many possible types of "rubber" that could be used in a jar seal. Let me do some research and get back to you. And, if you can, try to find out what the seals are made of. -MB Quote Link to comment Share on other sites More sharing options...
Ganoderma Posted July 13, 2006 Author Report Share Posted July 13, 2006 ok thanks. i am not 100% certain what these are but i think they are likely Polyurethane or Neoprene. here is a website. are any of these products unsafe? if there is one that you think would stand teh test of time i will order them. Or perhaps replacing is needed? i was planning on preserving with ethyl and replacing that very 5 years or so anyway. Nitrile, EPDM, Natural, SBR, Viton, Butyl, Neoprene, Silicone, Polyurethane. http://www.honeycrown.co.uk/rubber-canning-jar-rings.htm i am aslo considering expeimenting with propylene glycol. the very few things i have read seem promising. any comments on that? *here is a link if you are interested at all. although i am not keeping my sepcimens cold at all....http://www.bio.sdsu.edu/pub/spiders/HedFiles/vinketal2005.pdf Quote Link to comment Share on other sites More sharing options...
Mercedes Benzene Posted July 13, 2006 Report Share Posted July 13, 2006 Okay. Here's what I've determined!Good luck, and tell me if you need any more information. EPDM: Ethyl Alcohol = okay, Formalin = okayNeoprene: Ethyl Alcohol = okay, Formalin = not okaySilicone: Ethyl Alcohol = not okay, Formalin = not okayNitrile: Ethyl Alcohol = not okay, Formalin = not okayViton: Ethyl Alcohol = okay, Formalin = not okay These are the only seal materials (from their website) that I could find data for. It looks like EPDM is your best choice, unless you can get more information. I will continue to look for you!Check the packaging, or ask the manufacturer the exact composition of the seals before you buy the jars. Good Luck! InfiniteNow and pgrmdave 2 Quote Link to comment Share on other sites More sharing options...
Ganoderma Posted July 14, 2006 Author Report Share Posted July 14, 2006 excellent thanks so much! greatly appreciated :naughty: Quote Link to comment Share on other sites More sharing options...
Mercedes Benzene Posted July 14, 2006 Report Share Posted July 14, 2006 No problem. Quote Link to comment Share on other sites More sharing options...
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