EZ-Cast™ 580N, a new high temperature silicone-rubber molding compound produced by Aremco Products, Inc., is now used to fabricate high tear strength, flexible molds for casting ceramic fixtures. EZ-Cast™ 580N is a high temperature, flexible, high tear strength silicone-rubber molding compound ideal for producing high reliability master molds for casting ceramic fixtures. Material properties include a maximum temperature resistance of 400 °F (204 ºC), Shore “A” Durometer of 40, tensile shear strength of 700 psi minimum, and tear strength of 110 minimum lb/in. EZ-Cast™ 580N is supplied as a two-part system that mixes in a ratio of 10 lbs. resin to 1 lb. catalyst. It sets in 24 hours at room temperature or in 4 hours at 120 ºF. EZ-Cast™ 580N is available from stock in pint, quart, and gallon kits.