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<p>[QUOTE="Collecting Nut, post: 3209187, member: 74863"]In 1839 Goodyear discovered by accident that rubber when combined with lead and sulfur make the natural rubber more ply able and increase its usage. Prior to that rubber was to soft in the summer months and to brittle in the winter.</p><p><br /></p><p>In 1841 rubber bands were invented and today they have many uses. The Post Office is the largest consumer of rubber bands. Even the food industry uses them.</p><p><br /></p><p>Because the rubber is combined with lead and sulfur it is not to be used with metals. It will permanently stain them, even through plastic. The stain can be removed but all luster is also removed, hence the everlasting stain.[/QUOTE]</p><p><br /></p>
[QUOTE="Collecting Nut, post: 3209187, member: 74863"]In 1839 Goodyear discovered by accident that rubber when combined with lead and sulfur make the natural rubber more ply able and increase its usage. Prior to that rubber was to soft in the summer months and to brittle in the winter. In 1841 rubber bands were invented and today they have many uses. The Post Office is the largest consumer of rubber bands. Even the food industry uses them. Because the rubber is combined with lead and sulfur it is not to be used with metals. It will permanently stain them, even through plastic. The stain can be removed but all luster is also removed, hence the everlasting stain.[/QUOTE]
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