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.

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