The new engineering materials powerhouse

by SpecialChem

PMC® -121/30

Technical Datasheet | Supplied by Smooth-On

PMC® -121/30 by Smooth-On is a soft, wet polyurethane rubber. Exhibits exceptional strength and good abrasion resistance. It has a higher net shrinkage value than dry rubber. It exudes oil that aids in demolding hard plasters and concrete. Recommended for molds for sculpture and architectural elements and for making special effects, toys & prototypes, casting waxes, liquid plastics and gypsum plaster. PMC® -121/30 is mixed 1:1 solution by weight or volume.

PMC® -121/30 Properties

Physical Properties

Value & Unit

Test Condition

Test Method

Linear Mold Shrinkage

< 0.001 in/in

(at 23°C)

ASTM D2566

Mixed Viscosity

1800 cP

(at 23°C)

ASTM D2393

Specific Gravity

1.04 g/cm³

(at 23°C)

ASTM D1475

Want to list or
update your products?

View the listing options

Want to report errors or
suggest improvements?

Send a Feedback

Products with the same brand name

View more (7)