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Poly 74 Series

These polyurethane liquid mold rubbers are soft to mid-range hardness, 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. The 74 Series liquid mold rubbers are supplied as pourable liquids so poured block and blanket molds can be made with ease.

In addition, these rubbers can be thickened to a user-controlled thixotropic consistency for brush-on mold applications. The thickening agent, Poly Fiber II, can also be used to thicken Polytek liquid plastics for making lightweight mold shells to support poured and brushed blanket molds.

Poly 74 Series rubbers offer an optimum blend of economy and versatility for most mold making challenges and have become the rubbers of choice for precast concrete casting, architectural GFRC, plaster casting, art foundries, sculpture and décor reproduction, and for numerous hobby, craft, prop and display mold making and casting projects.

Features

  • Shore A~20 to A~55 hardness liquid mold rubbers
  • High-strength, abrasion-resistant, longest lasting molds
  • Reproduces finest detail over and over and …
  • Pourable or brushable
  • Can be accelerated for rapid cure
  • Economical & versatile
  • Ideal for the most demanding mold making applications

                      

Watch a 74-Series mold being mixed and poured


Poly Fiber II 3lbs.(5Gal.)

CODE: PolyFiberII-3

$39.00
Polytek

Add to polyurethane liquid rubbers to thicken for brush-on application or to liquid polyurethane plastics to thicken for making mold shells or layup castings. The level of thickening can be easily controlled to make thins gels to thicker pastes. Great for use with Poly 74-Series rubbers to make them brushable. Can also be used to thicken Polygel rubbers further. Works well with Poly 15-6, 1511 and 1512X for making lightweight plastic molds shells that are durable and non-brittle.