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Annealed copper sheet.
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Certificate of conformance provided upon request other alloys and tempers available upon request.
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These sheets are pure copper c110 99 9 pure copper.
When you anneal copper it expands and becomes soft and pliable thus giving you a seal once the copper has been compressed.
Enchantment horizontal copper sheet light 36 gauge 18in x 2ft.
110 copper sheet annealed astm b152 astm b451 0 001 thick 6 width 100 length brand.
I usually use a bernzomatic mapp gas torc h and heat the entire copper gasket until its cherry red then quickly dump it in a bucket of cold water to quench it.