Poly 74-45 Liquid Polyurethane Rubber Kit - Polytek - Silica

Liquid Polyurethane Rubber | High Tear Formula These polyurethane liquid mold rubbers are soft to mid-range hardness, high-performance, room temperature curing systems. They offer superior flexibility and toughness allowing durable molds to be made from relatively simple to the most highly detailed, undercut and complex models. The Polytek 74-Series liquid mold rubbers are supplied as pourable liquids so poured block and blanket molds can be made with ease; thickening agent can be easily added to make brush-on molds. Pourable Rubber Curing Poly 74-45 liquid polyurethane rubber cures to a very tough, high-tear, high-elongation rubber. This product is ideal for high volume concrete and plaster casting and is a very popular option for casting decorative architectural concrete panels and accessories. Poly 74-45 molds can be poured as supplied or brushed-on by mixing in PolyFiber II thickener or Fumed Silica, also known as pyrogenic silica sand. Poly 74-45

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