RTV325 High Temperature Resistant Silicone Rubber

MIXING INSTRUCTIONS  Proportion Part A and Part B in a ratio of 10 Parts A to 1 Part B by weight. Stir thoroughly either by hand or by mechanical mixer until a uniform color is achieved. Mix until all streaks of white disappear. If facilities permit, deaerate in a vacuum chamber at a minimum of 28 inches of mercury until material rises to approximately double the volume and collapses. Carefully pour rubber over the pattern and allow to cure for the required time. Water mist can sometimes help slow-curing rubber catch-up to normal cure time.

4.        High Durometer. The stiffness of the cured rubber makes molds self-supporting, reducing the need for of external supports and rounds.

3.        Minimum Shrinkage: The shrinkage rate is lowest when the Slow Catalyst is used. Even if the Fast Catalyst is used, the shrinkage is minimal. This is a particularly valuable property in the production of multi-piece molds that require exact registration to minimize the parting lines.

2.        Fast Cure

1.        Improved heat resistance. RTV325 can withstand temperatures up to 600