MEASURING & MIXING

Liquid urethanes are moisture sensitive and will absorb atmospheric moisture. Mixing tools and containers should be clean and made of metal, glass or plastic. Materials should be stored and used in a warm environment (73°F/23°C).

IMPORTANT:

Shelf life of product is drastically reduced after opening. Immediately replacing the lids on both containers after dispensing product will prolong the shelf life of the unused product.

IMPORTANT:

Pre Mix the Part B before using. After dispensing Part A and Part B into mixing container, mix thoroughly for at least 3 minutes making sure that you scrape the sides and bottom of the mixing container several times. If Mixing Large Quantities at one time, use a mechanical mixer for 3 minutes followed by careful hand mixing for one minute as directed above. Then, pour entire quantity into a new, clean mixing container and do it all over again. Although this product is formulated to minimize air bubbles in your the cured rubber, vacuum degassing will further reduce entrapped air. A pressure casting technique using a pressure chamber can yield totally bubble free molds.

POURING CURING & PERFORMANCE

Pouring

For best results, pour your mixture in a single spot at the lowest point of the containment field. Let the rubber seek its level up and over the model. A uniform flow will help minimize entrapped air. The liquid rubber should level off at least 1/2" (1.3 cm) over the highest point of the model surface.

Curing

Allow rubber to cure overnight (at least 16 hours) at room temperature (23°C) before de-molding. Cure time can be reduced with mild heat. Do not cure rubber where temperature is less than 18°C.

Post Curing

Generally rubber cures at room temperature; it can also heat curing. Heat the rubber under temperature about 120°C, rubber can be cured within one hour.

Package of Concrete Stamp Molds Raw Material Liquid Urethane Rubber :

 20kg and 200kg/drum