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<p>[QUOTE=&quot;GDJMSP, post: 81357, member: 112&quot;]There are several impulse or heat sealers on the market - some of them can be viewed - <a href="http://www.brent-krueger.com/flips.html" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.brent-krueger.com/flips.html" rel="nofollow">HERE</a> (scroll down to the bottom of the page). But if you use these things there is something you need to keep in mind.</p><p><br /></p><p>Anytime you use an airtight container to store your coins you have to be careful about temperature changes. Say your storage place for the coins has an average temp of 65 deg. (like in a metal safe ) - if you remove the coins and the room temp is 80 deg. - then condensation could form inside the airtight container and get on the coins.</p><p><br /></p><p>A non airtight coin holder allows the holder to breathe thus reducing the chances of condensation inside the holder. But any coin holder will be subject to condensation if it is subjected to rapid changes in temperature. That&#039;s why it is just as important to maintain consistent temperatures for coin storage as it to protect them from other elements like light and particulates in the air.[/QUOTE]</p><p><br /></p>

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