Description
Flex 50 is amedium-firm urethane rubber designed for casting flexible molds, replicating soft rubber parts, and creating durable prototypes. With a shore hardness of 50A, it provides the perfect balance betweenstrength and flexibility, making it an excellent choice for gaskets, grips, and high-detail molds.
Its low viscosity ensures superior detail reproduction, while vacuum or pressure casting is recommended for bubble-free results.
Color Ivory
Mixed Viscosity 550cP
Mix Ratio 1:1 by weight or volume
Working Time 4 min
Demold Time 2 hours
Cure Time 72 hr
Hardness 50A
Tensile Strength 250
Tear Resistance 50
Elongation % 200
Features
✅ Medium-Firm Flexibility:
Shore hardness of 50A for a balance of strength and flexibility
✅ Perfect for Rubber Molds & Parts:
Ideal for casting flexible molds, gaskets, and soft rubber parts
✅ Smooth, Detailed Castings:
Low viscosity allows for excellent detail reproduction
✅ Customizable Colors:
Mix with Alumilite translucent dyes, and add white dye for opaque colors
✅ Fast Demold Time:
Ready to demold in 2 hours, full cure in 72 hours
✅ Compatible with Multiple Casting Materials:
Works well with resin, concrete, plaster, and more
✅ Minimal Shrinkage:
Maintains high accuracy with low linear shrinkage
🚫 Not as rigid as higher shore rubbers like Flex 70 or 80
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