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Akron RTV RP is specially formulated to meet the needs of manufacturing jewelers. This two-part clear liquid silicone compound is strong and durable with a very high tear strength. You can use it to create production molds directly from carved waxes or resin models. Its clear color makes it easy for you to detect air bubbles during the vacuum process and exact the positioning of your mold line during cutting. Because it delivers nearly zero (less than 0.1%) shrinkage, you can depend on highly accurate model reproduction.
Cures at room temperature in 24 hours but there are fast-cure options. It can be cured in 60 minutes at 122ºF or in 30 minutes at 190ºF.
Akron RTV Silicone is rated for continuous exposure to temperatures up to 500ºF. We do not recommend direct alloy casting as it is an unsafe procedure without proper training.
A 1.1 lb. kit will yield 5 to 6 molds from an average mold frame 3/4" x 2" x 3". Actual yield is dependent on model size and other factors within the user's control, such as not filling the mold frame to the top.