Poly 74-30HT Liquid Rubber

poly-74-30htPoly 74-30HT is a high-tear formula of our ever-popular Poly 74-30. It is a 1:1 mix, low-viscosity, liquid polyurethane mold rubber that can be used for all the same uses as any other Poly 74-Series rubber – casting of wax, plaster, concrete, resin, foam and more! Poly 74-30HT uses the same Poly 74 Part A as Poly 74-30, but with a new, high-strength formulation on the Part B side, we are able to provide superior tear and tensile strength in applications where that is important.

Poly 74-30HT can also be mixed with Poly Fiber II to create a thixotropic mix of any consistency needed for brush-on mold applications.



Mix Ratio Shore Hardness Pour Time Cured Color Mixed Viscosity Specific Volume Demold Time
1A:1B A30 25-30 min. Amber/Varies 2,000 cP 27.5 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 | Sealer & Release Agent Selection Guide

Video Tutorials: For 74-Series video tutorials, visit the 74-Series page or the Polytek YouTube Channel.


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