Poly 75-70 Quart Kit (4 lbs)
Poly 75-70 is a 1A:1B mix, A~70 hardness, long working time, firm, polyurethane mold rubber that has a 40 minute pour time and a 16-24 hour demold used primarily for making tough, durable molds, liners and stamps for casting, forming and texturing concrete. Can also be used to cast plaster, wax, resins and foams with proper release agents. This rubber has high abrasion resistance and long mold life for high volume casting operations. Used for making decorative concrete countertops, precast architectural panels, sound barriers, fences, pavers, slabs, patio stones, retaining wall blocks and for virtually all other types of cast stone and GFRC applications.
Kit Contains: 1 Quart (2lbs) of Part A and 1 Quart (2lbs) of Part B - 4 lbs Total
Call for price on 5 Gallon and Drum Kits
Mix Ratio: 1A:1B by Weight
Durometer: Shore A 70
Working Time: 40 Minutes
Demold Time: 16-24 Hours
Mixed Viscosity: 3000 cP
Allow to cure at room temperature, 77°F (25°C). Final cure properties are obtained in about seven days, but molds may be used with care after curing for 24-48 hours.
Heat accelerates the cure - low temperatures slow the cure. Avoid curing in areas where the temperature is below 60ºF (15ºC).
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