High temperature opaque labels for identification of various containers and surfaces for autoclaving and dry heat sterilization. Temperature range from -60°C to +150°C (from -76°F to + 300°F). The labels can be applied to metal, plastic and glass surfaces and withstand autoclave sterilization cycles at 132°C (270°F) at 30psi pressure. The autoclave labels and the print will survive high temperature exposures. Ideal for identification of containers and surfaces that need to be sterilized inside autoclaves, dry-heat sterilizing equipment and gamma irradiators. Waterproof, weatherproof, thermal-transfer printable.