Teflon, Silicone or Kevlar, 5 oz. Magic Lube II Silicone (Red) based lubricant and sealer, durable synthetic compound is non-melting and ideal for valves and other special applications that require the added protection and lubrication of silicone, such a chlorinators. Use part no. 651 for Rainbow part no. R172036 Silicone Lubicant.