Item # Sylgard® 170 Fast Cure Silicone Elastomer, Silicone Potting/Encapsulants On Robert McKeown Co., Inc.

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	Item # Sylgard® 170 Fast Cure Silicone Elastomer, Silicone Potting/Encapsulants

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2-part, 1:1 mix, black, general purpose encapsulant with good flowability and flame resistance, faster cure at room temperature

Specifications · Features · Potential Uses · Application Methods · Cure

Specifications

Type		Silicone Encapsulants

Mix Ratio		1:1

Color		Dark gray to black

Viscosity		2850 mPa/s

Durometer		45

Specific Gravity		1.38

Working Time at Room Temperature		4 min

Flammability Classification		94 V-0

UL Temperature Index, Electrical/Mechanical		170/170 ºC

Thermal Conductivity		0.40 W/m·K 9.6 x 10^-4 cal/cm·s-ºC

Shelf Life from Date of Manufacture		18 months

Dielectric Strength		350 V/mil 14 kV/mm

Dielectric Constant at 100 Hz		3.53

Dielectric Constant at 100 kHz		3.45

Dissipation Factor at 100 Hz		0.0038

Dissipation Factor at 100 kHz		0.0008

Volume Resistivity		2.4 x 10¹⁵ O/cm

Features

1:1 mix ratio; low viscosity; low cost for silicone benefits; rapid room temperature or heat accelerated cure; moderate thermal conductivity; UL recognized

Potential Uses

General potting applications: power supplies, connectors, sensors, industrial controls, transformers, amplifiers, high voltage resistor packs, relays

Application Methods

Supplied as two-part liquid component kits comprised of Part A/Part B to be mixed in a 1:1 ratio by weight or volume; automated mixing and dispensing

Cure

10 minutes at 25 °C (77 °F)

Note: These data were collected on 50–100 gram samples of a lot believed to be typical and should be used as initial estimates of cure times. Times will vary slightly from batch to batch and can be longer or shorter due to thermal mass of your parts and your heating ramp rate. Pretesting is recommended to confirm adequate cure for your application.
For primerless adhesion products, cure time is based on time to reach durometer. Full adhesion may take more time at the cure temperature.

Item # Sylgard® 170 Fast Cure Silicone Elastomer, Silicone Potting/Encapsulants

Type

Mix Ratio

Color

Viscosity

Durometer

Specific Gravity

Working Time at Room Temperature

Flammability Classification

UL Temperature Index, Electrical/Mechanical

Thermal Conductivity

Shelf Life from Date of Manufacture

Dielectric Strength

Dielectric Constant at 100 Hz

Dielectric Constant at 100 kHz

Dissipation Factor at 100 Hz

Dissipation Factor at 100 kHz

Volume Resistivity