Speedliner Rigid Casting Urethanes Semi-Rigid Casting Urethanes Transparent Casting Compounds Molding Compounds Clear Elegance Brush-on Molding Gels Coatings & Sealants StyroSpray Hard Coatings Primers Expanding Urethanes
Our rigid casting urethanes offer a variety of densities, hardness and working life to fit your application. Silicone, aluminum, polyurethane or epoxy can be used to construct molds for casting products. A mold-releasing agent such as spray silicone or wax must be used to prevent bonding of casting products to molds. Our rigid casting urethanes are designed for easy hand mixing, no heating or cooking is required simply mix and pour.

HP-6505™ is our best quality rigid casting polymer offering good heat resistance (to 190°F) and excellent thin film strength. HP-6505™ and HP-6510™ are formulated for manufacturing prototype parts with the look and feel of an injection thermoplastic. Parts made from these products provide high impact strength, thermal resistance and good dimensional stability. HP-6505™ provides a 10-minute working life and permits de-molding in 45 to 60 minutes. HP-6510™ provides a shorter 3-minute working life and permits de-molding in 15 to 20 minutes with a hardness of 81 shore D. HP-6505™ can be mixed by automated mixing equipment.  

ProtoCast 80R™ is our most popular low viscosity casting polymer. It provides a 3 to 5- minute working life and rapid 10 to 20-minute demold time. ProtoCast 80R™ rapidly produces high detail prototypes or display parts. It also simulates the density and appearance of natural white animal bone or used with black pigment produces the appearance of carved ebony wood. ProtoCast 80R™, and our RimCast™ products are very low viscosity, rapid set, rigid urethane compounds which cure quickly to a hard, impact resistant casting.

 

Each of these products is non-sensitive to moisture after cure and will readily bond to itself if secondary pours are required. ProtoCast™ and RimCast™ products are recommended in applications where a “injection thermoplastic feel” is desired or white color is required.  

RimCast 100™ is recommended for rotational molding applications. It has a 5-minute working life, 1 to 1 mix ratio by volume and low viscosity. Liquid components can be stored at low temperature. If a lower viscosity is needed we recommend our RimCast 150™ version (see chart below). RimCast™ products are available in amber color.

GTS-850 is formulated for casting very large plastic parts where a long working life is required. It provides a long 20-minute working life, low exothermic heat, an easy 1 to 1 mix ratio by volume and a shore 85-D hardness. TrueCast 850™ has the quality of high hardness without brittleness and produces cured parts that have the look and feel of an injected thermoplastic.

PolyStone™ is a rapid set ceramic filled, urethane casting product. When fully cured it provides high compressive strength, resists heat distortion and has a lower cost. Its high ceramic content makes it ideal for manufacturing patterns or prototype models. PolyStone™ has a low 0.75 cured density and the ceramic filler provides some insulation qualities.

PolyWood™ is a rapid set casting compound filled with silicate glass bead (microballoons). It offers, lightweight, good strength and low 0.53 density. PolyWood™ is easily machined, sanded or carved and resists heat to 140°F. It is excellent for casting rigid, non-absorbing, deep water floatation devices or syntactic foam parts. At great depths (high pressure) PolyWood™ maintains buoyancy and resists compression (we offer a neutral buoyancy flexible urethane - see TrueCast™ Molding Compounds.