These heaters are rated for environments where hazardous material is present. Also known as heat sheets, they are flexible and permanently adhere to container surfaces to warm contents without direct contact. All have a watt density of 2.5 W/sq. in. for gentle warming. Heaters require a temperature switch or controller to regulate heat output and should be installed with Dow Corning 736 silicone sealant (both not included).

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.

Hazardous location environmental ratings indicate whether manufacturers have included safety features in products to facilitate their safe use in a hazardous environment. Before selecting a product for a hazardous location, ensure it is rated for your environment. See About Hazardous Location Environmental Ratings.