The 25 �m Breathe-Easy film can work under the temperature range of -80�C to 100�C. With the ability to absorb oxygen, carbon dioxide, and water vapors, this product is an ideal sealing film. It is also UV transparent down to 300 nm, non-cytotoxic, and sterile. A brayer or sealing paddle is needed to perform a proper sealing. This product is sold in a pack of 100.