Product Specifications: PC2032AB



Tough-Seal 32 is a tough and durable fast gelling Potting Compound and Sealant with excellent Thermal Cycling Stability. This low viscosity material is self-leveling and flows like maple syrup around intricate electrical components to ensure complete coverage of your entire PCB or electronic assembly.


Tough-Seal 32 has a longer 60 minute working time and a Shore Hardness of 40A, which is similar to the hardness of a pencil eraser. Tough-Seal 32 reaches 94% of its full hardness after an overnight cure or with a heat cure of 1 hour at 80°C (176°F). Tough-Seal does not exotherm or shrink during curing, therefore there is no embedment stress induced on the electronic components that could cause damage and failure of the PCB or electronic assemblies. Sensitive electronics can be potted safely with low embedment stress Tough-Seal.


With a high elongation of 450% when fully cured, Tough-Seal 32 maintains exceptional flexibility and thermal cycling stability from –40°C to 150°C (-40°F to 302°F) without pulling back, wilting, or cracking. This ensures a tough seal that will stop moisture or other contaminants from damaging sensitive PCB’s and electronics.


Tough-Seal has very aggressive adhesion to aluminum, making it a perfect choice for potting aluminum housings in LED lighting applications. Tough-seal bonds extremely well with most polymers. For housing and wire insulation materials that are exceptionally difficult to bond to, we offer our KEY PR1200 PRIMER, an aggressive adhesive promoter that is simple to use.

Product Information Bulletin (PIB) and Safety Data Sheet (MSDS) Downloads

PIB (PC2032AB)

SDS (PC2032A)
SDS (PC2032B)

PIB (Key PR1200 Primer)
SDS (Key PR1200 Primer)

(Typical Properties)
Physical Properties
Color, Part AOff White
Viscosityat 25°C, cP, Part A, (RVT #5, 20 RPM)4,500
Specific Gravityat 25°C, Part A1.15
Densityat 25°C, lbs/gal, Part A9.6
Color, Part BBlack
Viscosityat 25°C, cP, Part B,
(RVT #5, 20 RPM)
Specific Gravityat 25°C, Part B1.02
Densityat 25°C, lbs/gal, Part B8.5
Color, MixGrey / Black
Viscosityat 25°C, cP, Mix, (RVT #5, 20 RPM)6,000
Specific Gravityat 25°C, Mix1.07
Densityat 25°C, lbs/gal, Mix8.9
Mix Ratio by Volume1A to 2B
Mix Ratio by Weight57A to 100B
Gel Timeat 25°C, Minutes, 100 grams60
Shelf Life, Ambient, Part A Bulk (15°C to 35°C)12 Months
Shelf Life, Ambient, Part B Bulk (15°C to 35°C)12 Months
Shelf Life, Cold, Part A Bulk (-18°C to 3°C)12 Months
Shelf Life,Cold, Part B Bulk (-18°C to 3°C)12 Months
Electrical & Thermal Properties
Dielectric Strength, 25°C, Volts/mil350
Volume Resistivity,25°C, Ohm-cm x (10)121.75
Dielectric Constant,25°C – 1 MHz4.85
Dielectric Constant,25°C – 1 kHz5.25
Dielectric Constant,25°C – 60 Hz5.45
Dissipation Factor, 25°C – 1 MHz0.025
Dissipation Factor, 25°C – 1 kHz0.021
Dissipation Factor, 25°C – 60 Hz0.043
Heat CapacityCp, 25°C, J/g°K1.8
Thermal Conductivity,25°C, W/m°K0.20
Coefficient of Thermal Expansion, ppm/ °C
(-) 65°C to 75°C200
75°C to 100°C200
100°C to 150°C200
Coefficient of Thermal Expansion, ppm/°F
(-) 85°F to 167°F111
167°F to 212°F111
212°F to 302°F111
Hardness vs Temperature
seechart(-75°C / -103°F)84 A
(-25°C / -13°F)48 A
5°C / 41°F43 A
25°C / 77°F40 A
50°C / 122°F41 A
66°C / 150°F42 A
80°C / 176°F42 A
100°C / 212°F42 A
120°C / 248°F41 A
150°C / 302°F39 A
Hardness vs Ambient Cure Time
seechart1 hour0 A
2 hours0 A
4 hours0 A
8 hours0 A
12 hours0 A
1 day9 A
2 day23 A
3 days28 A
4 days31 A
1 week35 A
1 month43 A
Mechanical Properties
Tensile Strengthper ASTM D638, 25°C, PSI850
Elongationper ASTM D638, Type I, 0.125 in, 25°C450%
Co=Cohesive Ad=Adhesive
Tensile Lap Shear Strengthper ASTM D1002, 25°C, psi **
metallicaAluminum Bare480 Co
Steel Bare200 Ad
Steel Ground200 Ad
Primed Steel200 Ad
Galvanized Steel200 Ad
Tin Plated Steel200 Co
Chrome Plated Steel200 Co
Tensile Lap Shear Strengthper ASTM D3163, 25°C, psi **
frp_textFRP – Polyester Fiberglass210 Ad
Garolite G-9 Melamine/Glass220 Ad
Garolite G-10 Epoxy/Glass360 Ad
Garolite XX Phenolic/Paper160 Ad
Tensile Lap Shear Strengthper ASTM D3163, 25°C, psi **
ThermoplasticsAcrylic300 Ad
Acrylic/PVC250 Ad
PVC – Polyvinyl Chloride250 Ad
CPVC – Chlorinated PVC280 Ad
ABS – Acylonitrile Butadiene Styrene180 Ad
PETG – Polyethylene Terephthalate220 Ad
Lexan – Polycarbonate210 Ad
Nylon 6/6 – Polyamide260 Ad
Polypropylene40 Ad
Polyethylene LDPE10 Ad
Polyethylene HDPE20 Ad
Teflon PTFE – Polytetrafluoroethylene20 Ad
Noryl – Polyphenylene Oxide/Polystyrene150 Ad
Ultem – Polyetherimide170 Ad
**20 mil Bondline, 1 in x 4 in Adherands, 1 in Overlap