Poly 75-90 Liquid Rubber

Poly 75-90 liquid polyurethane rubber has the highest Shore hardness (A90) of the 75-Series. Molds made from this rubber exhibit high tear strength, tensile strength, abrasion resistance and durability.

Poly 75-90 liquid rubber is used primarily for making tough, durable molds, liners and stamps for casting, forming and texturing concreteThis includes molds for precast architectural panels, sound barriers, fences, pavers, slabs, patio stones, retaining wall blocks and for virtually all other types of cast stone applications. Other popular applications include the making of industrial parts, rollers, gaskets, bumpers, pads, and more.  Molds can also be used to cast plaster, wax, resins and foams with the proper release agents.



Mix Ratio Shore Hardness Pour Time Cured Color Mixed Viscosity Specific Volume Demold Time
2A:1B A90 10-15 min. Opaque Amber 6,000 cP 26 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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