Poly 75-Series Liquid Mold Rubbers

Liquid Mold Rubbers for Architectural Precast Poly 75-Series polyurethane liquid mold rubbers are mid-range to firm hardness, high-performance, room-temperature curing systems. They offer superior strength, toughness and abrasion-resistance that result in durable molds that capture and reproduce exact textures and the finest detail from any model. Poly 75-Series rubbers offer an optimum blend of economy and performance.

These rubbers are commonly used in the following applications: Concrete Casting, Architectural Reproduction & Restoration, Industrial Applications, Theming & Display, and much more.

Plaster and wax can generally be cast in polyurethane molds without any release agent, but most concrete mixes and polyurethane resins require a suitable release agent (e.g., Pol-Ease^® 2300 Release Agent).

View all product options within this series under "Product Options" below:

Product Line Features

Two-part polyurethane rubbers
Room temperature curing (RTV)
Shore Hardness Options: A60 – A90
Pourable or brushable (use PolyFiber II or Fumed Silica to thicken for brush-on application)
High-strength, abrasion-resistant, super-tough rubbers
Reproduces fine details and textures
Long-lasting, economical
Can be accelerated for rapid cure
Ideal for high volume casting applications
All rubbers can be demolded after ~16 hours

Product Options

Select an option below for additional product specifications and buying information:

Product	Mix Ratio	Shore Hardness	Pour Time	Demold Time	Cured Color
Poly 75-59	1A:1B	A60	10 min.	16 hr.	Amber
Poly 75-60	1A:1B	A60	10 min.	16 hr.	Amber
Poly 75-65	1A:1B	A65	35 min.	16 hr.	Amber
Poly 75-70	1A:1B	A70	40 min.	16 hr.	Gray
Poly 75-75	2A:1B	A75	20 min.	16 hr.	Amber
Poly 75-79	2A:1B	A80	20 min.	16 hr.	Yellow
Poly 75-80	2A:1B	A80	45 min.	16 hr.	Yellow
Poly 75-90	2A:1B	A90	10-15 min.	16 hr.	Opaque Amber

Accessories

Softener	Add Poly 74/75 Part C Softener to 75-Series products for a lower-viscosity mix and a softer rubber.
Accelerator	Add Poly 74/75 Part X Accelerator to 75-Series products to accelerate the cure.
Thickeners	Use PolyFiber II or Fumed Silica to thicken the liquid mix for application by brush or trowel.
Reinforcement Materials for Blanket Molds	Use Tietex^® Fabric to reinforce blanket molds.
Product Life Extender	Use Poly Purge Aerosol Dry Gas to extend product life by spraying it into containers before resealing.
UV Stabilizer	Use UV additive to help reduce the characteristic surface degradation caused by sunlight.