Suitable for tongue and groove, male-female, or groove-to-flat face flanges Spiral windings only, containing preformed metal wire and soft filler material Inner and outer diameters of winding are reinforced with several plies of metal without filler to give greater stability Durable; easy installation and removal Suited to temperatures from cryogenic to 2000°F / 1093°C, depending on metal wire and filler. Custom-tailored solutions accommodate a variety of conditions by combining various metals and filler materials