Poly 75-59 Liquid Rubber

rigid-polyurethane-foamsPoly 75-59 liquid polyurethane rubber has a 1A:1B mix ratio and a short working time (10 min). Molds made with this rubber are widely used for high volume plaster casting and concrete casting, including concrete countertops, precast architectural panels, sound barriers, fences, pavers, slabs, patio stones, retaining wall block and all other types of cast stone and GFRC applications. Other casting materials include wax and limited resins.

This rubber has high abrasion resistance and long mold life under the harshest conditions of high volume, repeated casting.

Poly 75-Series rubber are not UV-resistant; however, if occasional outdoor use is necessary, Poly 75-59 (along with Poly 75-65 & Poly 75-80) perform best and UV resistance can be improved by adding UV additive.


Mix Ratio Shore Hardness Pour Time Cured Color Mixed Viscosity Specific Volume Demold Time
1A:1B A60 10 min. Amber 2,500 cP 27 in³/lb ~16 hr.
Accessories: 74/75 Part C Softener, 74/75 Part X Accelerator, PolyFiber II Thickening Agent, UV Additive, Tietex® Fabric, Poly Purge Aerosol Dry Gas


Product Literature: Technical Bulletin | Safety Data Sheets | Physical Properties Bulletin | Sealers & Release Agents Selection Guide

Video Tutorials: For 75-Series video tutorials, visit the 75-Series page or the Polytek YouTube Channel.


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