Magikmold® P-525 is a platinum-cured, room temperature curing (RTV), silicone rubber designed for the manufacture of high-performing, flexible molds. This two-part (Catalyst & Base), liquid silicone rubber has a Shore Hardness of A25, a pour time of ~15 minutes, and a demold time of ~4 hours.
Magikmold® P-525 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 : 1 Part Base|
|Pot Life||15 min.|
|Demold Time @ 77°F||4 hr.|
|Mixed Viscosity||3,400 cP|
|Specific Volume||24.7 in³/lb|
|Tensile Strength||485 psi|
|Die B Tear Strength||165 pli|
|Die T Tear Strength||39 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
Safety Data Sheet: Magikmold® P-525 Catalyst & Base