Magikmold® P-508 Platinum Cure Silicone Rubber
$48.00 – $1,257.00
Magikmold® P-508 is a two-component, platinum-cured silicone rubber that cures at room temperature. This is a very soft silicone used to make molds of highly detailed and delicate objects (e.g., candle and soap molds).
Available in 4 kit sizes.
FREE SHIPPING ON ALL SIZES. ONLINE ORDERS ONLY.
FOR INDUSTRIAL/PROFESSIONAL USE ONLY.
Magikmold® P-508 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 A8, a pour time of ~20 minutes, and a demold time of ~3-4 hours.
This very soft silicone is popular for making molds of highly detailed and delicate objects (e.g., candle and soap molds).
Magikmold® P-508 molds are commonly used to cast the following materials:
- Urethane (polyurethane) plastic and rubber
- Plaster
- Polyester Casting Resin
- Cement, Concrete
- Epoxy
- Soap
- Wax
- 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.
FOR INDUSTRIAL/PROFESSIONAL USE ONLY.
Physical Properties
| Type | Platinum-cured (addition-cure) |
| Mix Ratio by Weight | 1A:1B |
| Shore Hardness | A8 |
| Pot Life | 20 min. |
| Demold Time @ 77°F | 3-4 hr. |
| Cured Color | Translucent |
| Mixed Viscosity | 2,400 cP |
| Specific Volume | 26.6 in³/lb |
| Specific Gravity | 1.04 |
| Tensile Strength | 185 psi |
| Elongation | 781 % |
| Die B Tear Strength | 35.4 pli |
| Die T Tear Strength | 11.8 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.
Product Literature
Technical Bulletin: Magikmold® P-500 Series Technical Data Sheet
Safety Data Sheets: Magikmold® P-508 Catalyst & Base SDS
| Weight | N/A |
|---|---|
| Dimensions | N/A |
| Mix & Cure Instructions | READ SAFETY DATA SHEET BEFORE USE. READ TECHNICAL BULLETIN FOR FULL PRODUCT INSTRUCTIONS. Before use, be sure that the Catalyst and Base are at room temperature (~73°F) and that all tools are ready. All mixing and curing should be done in room temperature conditions. Read all product labels to determine the correct mix ratio and if the product requires stirring or To ensure a bubble-free mold, it may be necessary to deaerate the liquid rubber under vacuum at 28-29 inches mercury. Pour the rubber as soon as possible after mixing/vacuuming. At room temperature (~73°F), this rubber cures to full hardness in the specified demold time. At higher temperatures, they cure faster. At lower temperatures, more time may be needed to reach full hardness. |
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