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Polytek Poly-Fast 72-40 Liquid Mold Rubber (49.5lb Kit)


$279.99

Mix Ratio: 1A:10B
Shore Hardness: A40
Pour Time: 30 min.
Demold Time: 16 hr.
Cured Color: Ivory

Poly-Fast 72-40 Liquid Rubber is a two-part, liquid polyurethane system that cures (RTV) to an ivory, Shore A40 rubber. This is a pourable rubber, but it can be easily thickened with Poly-Fast Part D Thickener or Fumed Silica for brush-on application.

Notes: This product may soften/degrade with age and should not be considered for molds where long shelf life is required. For mold rubber options that will not soften with age, consider Poly 74-Series polyurethane mold rubbers. Shake or stir Part A & Part B before use. This is a 1A:10B mix ratio product that must be measured by weight. The color of polyurethane Part Bs may change in color from batch to batch or may darken with age, but product performance is not affected.

SKU: PT-PF7240-80 Categories: , ,

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