Clear RBC-1047 Resin

, Clear Coats, Silicone Molding

CLEAR-1047 is a low viscosity ultra-clear resin used in potting and casting applications where a clear resin system is desirable.  Depending on the hardener selected, CLEAR-1047 resin can be cured at room temperature or at elevated temperatures to obtain specific properties.

Handling Properties:

Mixed Viscosity @ 25oC,cps: 900
Shelf Life, (closed Container @ 25oC): 12 Months

Physical Properties (Cured):

Color: Clear
Specific Gravity @ 25oC: 1.15
Hardness, Shore D: 86
Linear Shrinkage, in./in.:  0.008
Moisture Absorption 10 Days @ 25oC, %: 0.19
Izod Impact Strength, ft. lbs./in. of notch:  0.55
Tensile Strength @ 25oC, psi: 9,100
Compressive Strength  @ 25oC, psi: 1,800

Thermal Properties (Cured):

Thermal Conductivity, Cal/Sec/CM2/oC/CM X 10-4: 5.2
Thermal Stability, 1000 Hrs. @ 175oC, % Wt. Loss: 0.45
Coefficient of Thermal Expansion, in./in./oC X 10-6:50
Heat Distortion temperature, oC: 140
Operating Temperature Range, oC:  -55 to 140

Electrical Properties (Cured):

Volume Resistivity  @ 25oC, OHM-CM: 6×1015
Dielectric Strength, Volts/Mil: 475
Dielectric Constant  @ 25oC, 100 KC:4.3
Dissipation Factor  @ 25oC, 100 KC: 0.030

The above properties are typical of a system cured with hardener #B-31

Recommended Hardeners: 

B- 31: A rigid, heat cure  system with a long pot life, designed for small to large castings.
B-125: A rigid, faster setting version of B-31 with excellent air-release and hardness.

Mixing Instructions: 

Weigh the desired amount of CLEAR-1047 resin into a clean container and combine with recommended hardener in one of the ratios shown below.

Hardener Parts by Weight
per 100 pts. Resin
Pot Life 
100 grams @ 25oC
B-31 50 2-3 Hours
B-125 45 1-2 Hours


Recommended Cure Schedule

Hardener Cure @ 25oC Cure @ 65oC Cure @ 100oC Cure @ 130oC
B-31 1-2 Hours 1 Hour 30-45 Minutes
B-125 1 Hour 30-40 Minutes 30 Minutes