Polyurethane Rubber
Use Polytek® urethane rubbers to manufacture your own molds or parts.
Polytek® manufactures a high-performing line of two-part, room-temperature curing (RTV) urethane rubbers that can be poured, brushed or sprayed to make molds or flexible parts.
Polyurethane mold making and casting rubbers are economical, incredibly versatile, and capture excellent detail. Flexible urethane materials are used across a variety of industries, including, but not limited to:
- Precast Concrete
- Sculpture & Foundry
- Prototyping
- Prop Making & Special Effects
- Plaster Millwork & Ornamentation
- Industrial Applications & Production Parts
- Theming & Scenic Design
- Model Making
Polytek® polyurethane rubbers are categorized into eight series. Select a series below for more information:
Poly 74-Series mold rubbers are used to make high-strength, abrasion resistant, long-lasting molds. Economical & versatile. Popular with plaster casters, concrete precasters and art foundries, but also used for a variety of additional industrial, artistic and commercial applications.
Shore Hardness Range: A20 to A55
Poly 75-Series mold rubbers are high-strength, abrasion-resistant, long lasting and economical. Primarily used for high production concrete casting, forming and texturing, but useful for a variety of additional industrial, artistic and commercial applications.
Shore Hardness Range: A60 to A80
PT Flex Series rubbers are fast-setting, rapid demold polyurethane systems developed specifically for prototyping and model making applications. This series offers a wide range of Shore Hardness options (A20 – D60). Most PT Flex products have simple, 1A:1B mix ratios and have 4 to 5-minute pour times and 2-hour demold times.
Shore Hardness Range: A20 to D60
Polygel® Series mold rubbers are self-thickening and ideal for making thin blanket molds of any size. Brushable and sprayable options available.
Shore Hardness Range: A35 & A50 Options
FormRub Series rubbers are designed to make high-performance molds that stand up to the rigors of high-production casting and forming of concrete. Low viscosity, 1A:1B mix ratios.
Shore Hardness Range: A35 to A65
Poly 81-Series rubbers are great for creating durable molds, mold facings, stamping tools, industrial parts, rollers, gaskets, mold shells, bumpers, pads and much more.
Shore Hardness Range: A90 & D45 Options
Poly-Fast 72-40 is a dense, medium hardness rubber used primarily for casting plaster, waxes and in some cases, concrete. Unlike other polyurethane rubbers, this system offers a liquid thickener accessory.
Shore Hardness Range: A40
Poly GlassRub 50 is a pale, blue-clear liquid polyurethane rubber that finds use as both a mold rubber and casting rubber since it can make stunning flexible parts and art objects which are clear, colored or filled with dry fillers. Simple 1A:1B mix ratio and Shore A45-A50 hardness.
Shore Hardness: A50
