Magnum™ cartridge heaters are swaged designs, made for use in applications where high watt density, high temperatures, and long service life are critical to minimizing mold service downtime and expensive press open time. The swaged construction produces a highly compacted cartridge heater that resists shock and vibration while providing for maximum element life through efficient transfer heating. Magnum cartridge heaters last up to 20 times longer than uncompacted cartridge heaters. UL/CUL component recognition available. Durex will also custom manufacture cartridge heaters to your specifications.