Protect and seal with 100% silicone rubber Waterproof, weatherproof, wont crack, dry out or crumble Meets Fed. Spec. TT-S-001543A, Class A USDA authorized for use in federally inspected meat and poultry plants Meets requirements of FDA Regulation No. 21CFR177.2600. CID-A-A-272. Type IV Clear 3 oz Carded