Sprayable Polyurethane Mold Rubbers

sprayable-polyurethane-mold-rubbersSprayable Polygel® rubbers are ideal for large surface area applications where brushing is impractical. Sprayable systems can be applied using a low-cost, portable Plas-Pak gun and cartridges or with higher output spray systems such as the FR-6 meter-mix/spray machine. Sprayed molds can be made in a single application reducing time and waste.

These unique polyurethane liquid mold rubbers patented by Polytek are self-thickening, high-performance, room temperature curing systems offering superior flexibility and toughness allowing durable molds to be made from relatively simple to the most highly detailed, undercut and complex models.


  • Shore A35 to A50 hardness mold rubbers
  • Self-thickening formula
  • Sprayable and brushable versions
  • Easy one-to-one mix by weight or volume
  • Reproduces fine detail

Typical Uses

  • ornamental precast concrete casting
  • architectural GFRC casting and restoration
  • plaster casting
  • art foundries
  • sculpture and décor reproduction
  • numerous hobby, craft, prop and display mold making and casting projects where brushable and sprayable molds are required
  • View more applications in the Polygel product photo gallery.


Product Options

Sprayable Polyurethane Mold Rubbers

Polygel® Spray 35 Sprayable version of Polygel® 35. Use with meter-mix spray equipment. 1A:1B mix ratio, Shore A35, 8- to 10-minute working time, 16-hour cure time.
Polygel® Spray 50 Designed for spray application using meter-mix spray equipment. 1A:1B mix ratio, Shore A50, ~5-minute working time, 16-hour demold time.
Popular Mold Shell Materials  Poly 1512X Liquid Plastic with PolyFiber II.
Spray Equipment  Plas-Pak Spray Guns/Regulators. Available for 1A:1B and 1A:10B mixes.