Low-durometer 1:1 platinum-cure RTV-2 silicone for glove molds and animatronics

General Information

P-727 is a two component, room temperature cured, 1:1 mix ratio, addition reaction silicone rubber for mold making or special effects. It offers a low durometer, Shore A 9, along with high elongation, tensile and tear strengths, making it a great choice for glove molds or animatronics. Its translucency makes it easily colored with a silicone dispersed pigment to meet your specifications. You may also introduce SI-661 to create a brushable or thixotropic version. P-727 can stick to itself after curing, allowing it to be painted within 5 days.

Typical Properties

Uncatalyzed Compound

Color

Base:TranslucentActivator:Colorless

Viscosity

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

Mixing Ratio

By weight:1:1By volume:n.a.

Mixed Viscosity

12,000–18,000cps

Working Time

0.8–1.0hours

Cure Time

2hours

Shelf Life

6months

Vulcanized (Cured) Properties

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

Shore A Hardness

One day:97 days:n.a.

±4 durometer

Tear Resistance

90 ± 5ppiASTM D624

Tensile Strength

440 ± 25psiASTM D412

Elongation

800 ± 50%ASTM D412

Service Temperature

n.a.

Shrinkage

0.00%

Specific Gravity

n.a.

Coverage

25.6in³ / lb

Working time

45 to 60 minutes

100 % Modulus

5 + 2

Quick version

15 to 20 minute working time, cure time under 1 hour. Other properties as standard.

Shore 00 Hardness

68 + 4

Effect of SI-684 softener

At 2 %: 20 minute work time, Shore A 7. At 3 %: 20 minutes, Shore 00 61. At 5 %: 18 minutes, Shore 00 55. At 7 %: 18 minutes, Shore 00 49.