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.

Technical Data Sheet (TDS) and Safety Data Sheet (SDS) Downloads

TDS (PC2032AB)

SDS (PC2032A)
SDS (PC2032B)

TDS (Key PR1200 Primer)
SDS (Key PR1200 Primer)

(Typical Properties)
Physical Properties
Color, Part A Off White
Viscosityat 25°C, cP, Part A, (RVT #5, 20 RPM) 4,500
Specific Gravityat 25°C, Part A 1.15
Densityat 25°C, lbs/gal, Part A 9.6
Color, Part B Black
Viscosityat 25°C, cP, Part B,
(RVT #5, 20 RPM)
Specific Gravityat 25°C, Part B 1.02
Densityat 25°C, lbs/gal, Part B 8.5
Color, Mix Grey / Black
Viscosityat 25°C, cP, Mix, (RVT #5, 20 RPM) 6,000
Specific Gravityat 25°C, Mix 1.07
Densityat 25°C, lbs/gal, Mix 8.9
Mix Ratio by Volume 1A to 2B
Mix Ratio by Weight 57A to 100B
Gel Timeat 25°C, Minutes, 100 grams 60
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/mil 350
Volume Resistivity,25°C, Ohm-cm x (10)12 1.75
Dielectric Constant,25°C – 1 MHz 4.85
Dielectric Constant,25°C – 1 kHz 5.25
Dielectric Constant,25°C – 60 Hz 5.45
Dissipation Factor, 25°C – 1 MHz 0.025
Dissipation Factor, 25°C – 1 kHz 0.021
Dissipation Factor, 25°C – 60 Hz 0.043
Heat CapacityCp, 25°C, J/g°K 1.8
Thermal Conductivity,25°C, W/m°K 0.20
Coefficient of Thermal Expansion, ppm/ °C
(-) 65°C to 75°C 200
75°C to 100°C 200
100°C to 150°C 200
Coefficient of Thermal Expansion, ppm/°F
(-) 85°F to 167°F 111
167°F to 212°F 111
212°F to 302°F 111
Hardness vs Temperature
seechart (-75°C / -103°F) 84 A
(-25°C / -13°F) 48 A
5°C / 41°F 43 A
25°C / 77°F 40 A
50°C / 122°F 41 A
66°C / 150°F 42 A
80°C / 176°F 42 A
100°C / 212°F 42 A
120°C / 248°F 41 A
150°C / 302°F 39 A
Hardness vs Ambient Cure Time
seechart 1 hour 0 A
2 hours 0 A
4 hours 0 A
8 hours 0 A
12 hours 0 A
1 day 9 A
2 day 23 A
3 days 28 A
4 days 31 A
1 week 35 A
1 month 43 A
Mechanical Properties
Tensile Strengthper ASTM D638, 25°C, PSI 850
Elongationper ASTM D638, Type I, 0.125 in, 25°C 450%
Co=Cohesive Ad=Adhesive
Tensile Lap Shear Strengthper ASTM D1002, 25°C, psi **
metallica Aluminum Bare 480 Co
Steel Bare 200 Ad
Steel Ground 200 Ad
Primed Steel 200 Ad
Galvanized Steel 200 Ad
Tin Plated Steel 200 Co
Chrome Plated Steel 200 Co
Tensile Lap Shear Strengthper ASTM D3163, 25°C, psi **
frp_text FRP – Polyester Fiberglass 210 Ad
Garolite G-9 Melamine/Glass 220 Ad
Garolite G-10 Epoxy/Glass 360 Ad
Garolite XX Phenolic/Paper 160 Ad
Tensile Lap Shear Strengthper ASTM D3163, 25°C, psi **
Thermoplastics Acrylic 300 Ad
Acrylic/PVC 250 Ad
PVC – Polyvinyl Chloride 250 Ad
CPVC – Chlorinated PVC 280 Ad
ABS – Acylonitrile Butadiene Styrene 180 Ad
PETG – Polyethylene Terephthalate 220 Ad
Lexan – Polycarbonate 210 Ad
Nylon 6/6 – Polyamide 260 Ad
Polypropylene 40 Ad
Polyethylene LDPE 10 Ad
Polyethylene HDPE 20 Ad
Teflon PTFE – Polytetrafluoroethylene 20 Ad
Noryl – Polyphenylene Oxide/Polystyrene 150 Ad
Ultem – Polyetherimide 170 Ad
**20 mil Bondline, 1 in x 4 in Adherands, 1 in Overlap