Magikmold® P-540T is a platinum-cured, room temperature curing (RTV), translucent silicone rubber designed for the manufacture of high-performing, flexible molds. This two-part (Catalyst & Base), liquid silicone rubber has a Shore Hardness of A40, a pour time of 90 minutes, and a demold time of 24 hours.
Magikmold® P-540T molds are commonly used to cast the following materials:
- Urethane (polyurethane) plastic and rubber
- Polyester Casting Resin
- Cement, Concrete
- Low-Melt Metals
Release agent is not necessary for casting most materials into Magikmold® P-500 Series molds, but for longer mold life with epoxy, polyurethane or polyester resins, a barrier coat or release agent (e.g., Stoner E-236 Urethane Mold Release) is recommended.
This is a pourable rubber, but it can be easily thickened with silicone thickener for brush-on application.
|Mix Ratio by Weight||1 Part Catalyst : 10 Parts Base|
|Shore Hardness||A35 – A40|
|Pour Time||90 min.|
|Demold Time @ 77°F||24 hr.|
|Mixed Viscosity||38,000 cP|
|Specific Volume||26.6 in³/lb|
|Tensile Strength||438 psi|
|Die B Tear Strength||98.6 pli|
|Die T Tear Strength||32.9 pli|
CURE INHIBITION: Contamination from amines, sulfur, tin compounds, polyester resins, some paints and some silicone rubbers may inhibit surface cure of this product. Perform a test cure on an identical surface to determine that complete curing and good release are obtained.
Technical Bulletin: Magikmold® P-500 Series Technical Data Sheet