Poly-Optic® 1420 Clear Casting Resin - 24-lb kit

Poly-Optic® 1420 Clear Casting Resin is a two-part, liquid polyurethane resin that cures (RTV) to a water-clear, Shore D85 plastic. It cures to a tough, impact and heat-resistant plastic that can be polished and machined and is used extensively in prototyping applications. Heat cure (150°F - 180°F) is required to achieve optimum physical properties. When cured at room temperature, the result is a brittle, glass-like casting.

Vacuum and/or pressure casting techniques are recommended for this product. Cure inhibition can occur when casting this resin in tin-cured silicone rubber molds – use a platinum-cured silicone rubber mold if working with silicones.

WARNING: This product contains Phenylmercuric acetate (CAS 62-38-4), a chemical known to the State of California to cause reproductive harm. For more information, go to www.P65Warnings.ca.gov. 

FOR INDUSTRIAL/PROFESSIONAL USE ONLY.

TECHNICAL SPECIFICATIONS

• Mix Ratio by Volume: 1A:1B
• Mix Ratio by Weight: 100A:90B
• Shore Hardness: D65
• Pot Life: 2-2.5 min.
• Demold Time: 15-30 min.
• Cured Color: White
• Mixed Viscosity: 60 cP
• Specific Volume: 26.9 in³/lb
• Specific Gravity: 1.03
• Linear Shrinkage: 0.0041 in/in
• Elongation: 13.9 %
• Tensile Strength: 2,936 psi
• Elastic Modulus: 72,627 psi
• Flexural Modulus: 93,112 psi
• Flexural Strength, 5% Strain: 3,915 psi
• Heat Deflection Temp.: 149°F
• Max Exotherm: 230°F
• Restriction of Hazardous Substances (RoHS) Compliant: Yes
• Notes: The color of polyurethane Part Bs may change in color from batch to batch or may darken with age, but product performance is not affected.