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<p>[QUOTE=&quot;YSH, post: 2844777, member: 89763&quot;]I wish to store my gold in mint tubes, then those mint tubes in small pelican waterproof / dust resistant cases.</p><p><br /></p><p>I understand PVC is bad, however these cases are made from polycarbonate ( hard plastic ) with the bottom lined with <b>Thermoplastic Rubber</b> as this also acts as an O - ring.</p><p><br /></p><p>Should I be concerned with the Thermoplastic Rubber bottom for long term storage if the coins aren&#039;t in direct contact with the material? This Rubber / plastic hybrid is what keeps the container dust free apparently.</p><p><br /></p><p>Here is the case I&#039;m buying</p><p><a href="https://www.bhphotovideo.com/c/product/257894-REG/Pelican_1060_025_170_1060_Solid_Micro_Case.html" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.bhphotovideo.com/c/product/257894-REG/Pelican_1060_025_170_1060_Solid_Micro_Case.html" rel="nofollow">https://www.bhphotovideo.com/c/produ...icro_Case.html</a></p><p><br /></p><p>Here is the manufacturer&#039;s specifications of the different materials used <a href="http://www.pelican.com/us/en/product/watertight-protector-hard-cases/micro-case/standard/1060/" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.pelican.com/us/en/product/watertight-protector-hard-cases/micro-case/standard/1060/" rel="nofollow">http://www.pelican.com/us/en/product/watertight-protector-hard-cases/micro-case/standard/1060/</a></p><p><br /></p><p><br /></p><p>&quot; ThermoPlastic Rubber TPR is best described a material which has both the characteristics of rubber and plastic. Typical applications are the hard rubber/plastic soles on many shoes or the the rubber/plastic material used on hane tool grips &quot;</p><p><br /></p><p>All information is appreciated, I&#039;m assuming it will be fine since the coins would be in mint tubes / small containers, and then placed inside this and not in direct contact with the TPR, and it is the perfect fit. However I simply cannot find any information regarding TPRs and coin storage.[/QUOTE]</p><p><br /></p>

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