Low-viscosity platinum-cure RTV-2 potting and encapsulation silicone

General Information

P-17 RTV silicone rubber is a red two-component, addition reaction, platinum-catalyzed system that cures at room temperature. It has a low viscosity, is easy to process and its cure rate can be accelerated with heat. It has excellent electrical and thermal properties and is reversion resistant. P-17 used in the potting and encapsulating of power supplies, amplifiers, relays, transformers, connectors, etc. Being that it is a platinum, addition reacted system, it will and can cure in a closed, air free system.

Typical Properties

Uncatalyzed Compound

Color

Base:WhiteActivator:Red

Viscosity

Base:11,500–12,500cpsActivator:500–1,500cps

Mixing Ratio

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

Mixed Viscosity

n.a.cps

Working Time

2.0–3.0hours

Cure Time

16–24hours

Shelf Life

n.a.

Vulcanized (Cured) Properties

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

Shore A Hardness

One day:n.a.7 days:50

±4 durometer

Tear Resistance

27 ± 3ppiASTM D624

Tensile Strength

495 ± 30psiASTM D412

Elongation

150 ± 20%ASTM D412

Service Temperature

-60 to 650°F

Shrinkage

0.00%

Specific Gravity

1.28

Coverage

n.a.

Dissipation Factor (@ 100 Hz)

0.002

Dielectric Constant (@ 100 Hz)

3.1

Dielectric Strength (volts/mil)

450