Use these high temperature labels for the identification of various containers and surfaces for autoclaving and dry heat sterilization. Apply them to metal, plastic, and glass surfaces. They will withstand autoclave sterilization cycles at 132 deg C at 30psi pressure. These labels and their print will survive high temperature exposures and are ideal for identifying containers and surfaces that need to be sterilized inside autoclaves, dry-heat sterilizing equipment and gamma irradiators. Waterproof and weatherproof. Temperature range from -60 deg C to +150 deg C.