Medium-durometer fast-cure platinum-cure RTV-2 mold making silicone

General Information

P-45 silicone rubber is a two-component, addition reaction, platinum catalyzed system that cures at room temperature. It has a moderate durometer, high elongation, superb physical properties, excellent release and good chemical resistance. Faster curing allows for quick mold turn around and better inhibition tolerance.

Typical Properties

Uncatalyzed Compound

Color

Base:Off WhiteActivator:Red Brown

Viscosity

Base:n.a.cpsActivator:n.a.cps

Mixing Ratio

By weight:100:10By volume:n.a.

Mixed Viscosity

65,000–85,000cps

Working Time

0.8–1.5hours

Cure Time

4–6hours

Shelf Life

6months

Vulcanized (Cured) Properties

Measured at 7 days, 70°F / 50% relative humidity

Shore A Hardness

One day:457 days:n.a.

±4 durometer

Tear Resistance

160 ± 20ppiASTM D624

Tensile Strength

800 ± 50psiASTM D412

Elongation

275 ± 50%ASTM D412

Service Temperature

-60 to 500°F

Shrinkage

0.00%

Specific Gravity

1.12

Coverage

n.a.

Working time

45 to 90 minutes