Spiral windings with an inner ring, containing preformed metal wire and soft filler material Inner ring can help shield the sealing elements erosion causes by abrasive media Durable Easy installation and removal Inner ring prevents radial buckling in flange connections where gasket is located in a step down groove when the gasket ID is not contained Suited to temperatures from cryogenic to 2000°F / 1093°C, depending on metal and filler Custom-tailored solutions accommodate a variety of conditions by combining various metals and filler materials