Ideal for many applications including heat shrinking, plastic tube bending, soldering, adhesive curing, solder preforms, butt welding, and more. Glo-Rings® incorporate quartz encapsulated heating elements which open and close to encircle work pieces with instant radiant heat at temperatures up to 1500°F (815°C). No R.F. interference is generated with the Glo-Rings® and they are suitable for use in clean rooms and testing areas. The Glo-Ring® is an excellent alternative to heat guns. It uses less electrical energy, does not blow hot air, and is simple to maintain. Note: Guards & elements sold separate.