Simply place them over the mouth of any bottle or jar, and screw on your closure tightly.02 Mm White Pressure Sensitive Pre-Cut Liner Printed These single-use seals are made to work with all container materials from glass to plastic, and easily peel off for consumer use.20Mm 0. These polystyrene foam liners, made from FDA approved materials, are coated with a torque-activated adhesive and require no special equipment to apply.