Blue silicone rubber casting kit
Blue silicone rubber casting kit
Blue silicone rubber casting kit
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Blue silicone rubber casting kit

Blue Silicone Rubber is extremely high tear, high tensile strength, two components, and tin catalysed RTV silicone rubber. It is designed for casting polyurethane foam, polyester and epoxy parts. It is a superior product with the following advantages over the RTV silicones:Extremely high tear strengthLow shrinkage, low viscosityExcellent chemical resistanceExcellent shelf agingColor coded catalystLong pot life insensitive to inhibitionVariable cure rateGood dielectric propertiesBlues silicone comes as a kit:Part A - 3.785L siliconePart B -  473ml curing agentTypical Properties:

Blue Silicone Rubber is extremely high tear, high tensile strength, two components, and tin catalysed RTV silicone rubber. It is designed for casting polyurethane foam, polyester and epoxy parts. It is a superior product with the following advantages over the RTV silicones:

  • Extremely high tear strength
  • Low shrinkage, low viscosity
  • Excellent chemical resistance
  • Excellent shelf aging
  • Color coded catalyst
  • Long pot life insensitive to inhibition
  • Variable cure rate
  • Good dielectric properties

Blues silicone comes as a kit:

  • Part A - 3.785L silicone
  • Part B -  473ml curing agent

Typical Properties:

Un-catalysed Compound Base Activator
Colour White Blue
Viscosity (cps) 50,000-70,000 300-400
Specific Gravity 1.10 .99  
Working time (hours) 1.5 to 2.5  
Cured Time (hours) 16 to 18  
Shelf Life ( months) 6  

Cured Rubber (7 days @ 70°F & 50% R.H.):

Hardness Shore A 6 32 ± 4
Tensile Strength (psi) 525 ± 25
Elongation (%) 300 ± 25
Tear, Resistance (ppi) 120 ± 10
Shrinkage (%) 0.1
Specific Gravity 1.09
Dielectric Strength (volts/mil) 500
Dielectric Constant @ 100Hz 3.3
Dissipation Factor @ 100Hz 0.019
Volume Resistivity (ohms/cm) 1 x 1015

MSDS

Updated: 11-10-2025
Code Pack Size Availability Price Updated: 11-10-2025
EMS24230-B 3.785L 0 in stock (?) $500.00 AUD