BriskHeat, Columbus, Ohio, released a line of durable cartridge heaters, available in a variety of lengths and diameters. 

BriskHeat cartridge heaters are designed for applications where high operating temperatures or heavy vibrations may be present. The 304 stainless-steel sheath provides oxidation resistance in a wide variety of environments. High-purity magnesium-oxide fill allows maximum dielectric strength and thermal conductivity. Nickel-chromium resistance wire is evenly wound for better heat distribution.