An excellent value, pound for pound-buy by the weight, and reap the savings associated with buying in bulk. High-rubber content, never less than 70%, ensures excellent elasticity and a high break point. Use them in the office, in your shop or in your kitchen. They even meet all FDA requirements for direct food contact.An excellent value, pound for pound-buy by the weight, and reap the savings associated with buying in bulk. High-rubber content, never less than 70%, ensures excellent elasticity and a high break point. Use them in the office, in your shop or in your kitchen. They even meet all FDA requirements for direct food contact.