Check the listing for details. RotoMetals Casting Retainer Putty 1 Pound Great for Damming/Molding/Positioning. Condition: New. Listed at 32.99 USD. Easily forms to fill holes and cracks in metal moldsGood up to 900F, For Zinc, Zamak, Pewter Alloy CastingPouring Babbitt Bearings, Epoxies, Dielectric Fluids, Various Molten Alloys,Extreme Temperature Resistance, Easily and Quickly Removed, Remains Flexible, Holds Tight, Easily Packed in Place, Asbestos-Free This is a 1 pound Chunk of Babbitt Casting Putty. Great for use for temperatures up to 900F. This damming, molding, casting and positioning putty has extreme temperature resistance, is easily and quickly removed, remains flexible, holds tight, is easily packed in place, and is asbestos-free. Uses: Damming compound for pouring molten Babbitt, vibration suppression, positioning delicate parts, holding solder while soldering wires on generators, aids in positioning during welding/brazing. ASIN B00EQ83H5W