P-541: is a rapidly curing, addition cure silicone for use in life casting. Due to the speed in which this material solidifies, it is not recommended for common mold making purposes. Cure time can be accelerated with heat such as a hair dryer. To ensure the comfort of your model, use a mold release, such as petroleum jelly, on the body parts prior to applying P-541.
Typical Properties Uncatalyzed Compound
Color (Base): White (Activator): Orange
Viscosity (cps) Base: 60,000 - 80,000 Activator: 1000 - 3000
Mixing Ratio (B/A) By weight: 100 / 10 By volume: 100 / 11.7
Mixed Viscosity 40,000 - 50,000
Working Time 3 - 5 minutes
Demold Time 10 - 15 minutes
Shelf Life 6 months
Vulcanized (cured) Properties
(7 days @ 70° F / 50% relative humidity)
Shore A Hardness (±4) 30 + 4 (physical data can vary due to air trapped during curing process)
Tear Resistance (ASTM D624) 125 ± 10 ppi
Tensile Strength (ASTM D412) 600 ± 50 psi
Elongation (ASTM D412) 415 ± 30 %
Service Temperature (° F) -60 to 350
Shrinkage 0.10 %
Specific Gravity 1.13
Coverage (in3 / lb) 24.5