Low cost, low Viscosity Potting & Casting Compoun

PC 125 is a 100% solids epoxy system. It is a filled, low cost, general purpose epoxy potting and casting compound. It is a room temperature cure, has good overall properties, and is also machine dispensable.

Properties Cured:

Hardness, ASTM-D-2240 (Durometer) Shore D 80
Tensile Strength, ASTM-D-638 11,000 psi
Tensile Elongation, ASTM-D-638 2.5 %
Flexural Strength, ASTM-D-790 14,500 psi
Compressive Strength 12,500 psi
Coefficient of Thermal Expansion 48 x 10-6
Heat Distortion Point 105°C
Dielectric Strength, ASTM-D-149 (volts/mil) 415
Dielectric Constant, ASTM-D-150 4.2
Dissipation Factor, ASTM-D-150 0.02
Volume Resistivity, ASTM-D-257 (ohm-cm) 9 x 1015

Properties Uncure (A&B {PC90}):

Color Neutral
Viscosity, ASTM-D-2393 (c.p.s. @ 25o C)


Specific Gravity 1.55

Mix Ratio (by weight)

Mixed Viscosity, ASTM-D-2393 (@ 25o C)
Pot Life @ 25OC (100 grams)  60 minutes

Shelf Life @ 70o F
12 months minimum

Mixing Instructions:

Pre-mix Part A and Part B separately. Then measure out parts by weight. Mix thoroughly scraping the sides and bottom of the container. Evacuate @ 29in. Hg for void free casting. Pour into mold or cavity.

Cure Schedule:

Room temperature cure @75°F with full properties after 24 hours.
To accelerate cure, allow 2 hours @ room temperature, then 2 hours @ 125°F.
For higher service temperature, use Polycure 110.