Also known as heat sheets, these flexible heaters permanently adhere to container surfaces to warm contents without direct contact. They require a temperature switch or controller (sold separately) to regulate heat output.

Adhesive-back heaters have a pressure-sensitive adhesive. Heaters with a watt density of 5 watts per square inch are good for general purpose heating. For rapid warm-up and high-temperature applications, choose heaters with a watt density of 10 watts per square inch.

Note: Do not cut, crease, or overlap these heaters—this will damage the heating element. Use a roller during installation to remove air pockets and ensure direct surface contact. Once heaters have been applied to a surface, they cannot be removed and reused.