Tough-Seal 41 A

1 of 8 products in this brand
Tough-Seal 41 A is a flame retardant version of Tough-Seal 21. Self-extinguishing flame retardant performance has been validated by UL and KEY Tough-Seal 41A/Bhas achieved a UL94V-0 rating. KEY Tough-Seal 41A/Bachieves flame retardant properties without antimony and brominated compounds.

Chemical Family: Epoxy & Epoxy Derivatives

Product Type: 2K (2 component) Sealant, Encapsulant, Epoxy Sealant, Potting Compound, Structural Sealant

Application Area: Electrical Components

Compatible Substrates & Surfaces: Aluminum, Metal, Plastics

  • TypeDocument Name
View All Documents

Knowde Enhanced TDS

Identification & Functionality

Features & Benefits

Applications & Uses

Application Area
Compatible Substrates & Surfaces
Applications & Advantages
  • Excellent thermal cycling performance & thermal shock resistance
  • Resilient, Tough, Durable
  • Low embedment stress on electronics, Low shrinkage
  • Flame Retardant, Self-Extinguishing in Vertical Testing, Bromine-Free, Antimony-Free
Instruction for Use

MIX RATIO ByWEIGHTVOLUMEKEY Tough-Seal 41 Part A55 A1 AKEY Tough-Seal 41 Part B100 B2 B

Combine Part A and B and mix thoroughly, being careful to limit entrapped air during mixing. Scrape sides, walls and bottom of container. Pour material into part and cure.Bulk meter-mix dispensing machines and convenient cartridges provide air free mixing.

Properties

Color
Physical Properties
ValueUnitsTest Method / Conditions
Viscosity at 77°F (25°C)10000cP
Brookfield RVT at 20rpm6
Specific Gravity1.47
Density (lbs/gal)12.3
Elongation at Break200%D638
Linear Shrinkagemax. 0.001in/inD2566
Operating Temperature Range at -40°F to 212°F-40 to 100°C
Gel Time (200g) at 25°C (77°F)20minutes
Full Cure at Mild 66°C (150°F) heat cures can accelerate cure.Within 24-72hours
Hardness55-65Shore AD2240
Mechanical Properties
ValueUnitsTest Method / Conditions
Hardness vs Temperature -25°C (-13°F)75Shore AD2240
Hardness vs Temperature 100°C (212°F)50Shore AD2240
Hardness vs Temperature 25°C (77°F)64Shore AD2240
Hardness vs Temperature 5°C (41°F)66Shore AD2240
Hardness vs Temperature 50°C (122°F)58Shore AD2240
Hardness vs Temperature 66°C (150°F)54Shore AD2240
Hardness vs Temperature 80°C (176°F)52Shore AD2240
Tensile Strength 25°C (77°F) 194psiD638
Elongation at Break 25°C (77°F)300%D638
Linear Shrinkage (Upon Cure) 25°C (77°F) max. 0.001in/inD2256
Hardness vs RT Cure 1 Hour at 25°C (77°F)10Shore AD2240
Hardness vs RT Cure 2 Hours at 25°C (77°F)22Shore AD2240
Hardness vs RT Cure 4 Hours at 25°C (77°F)30Shore AD2240
Hardness vs RT Cure 8 Hours at 25°C (77°F)33Shore AD2240
Hardness vs RT Cure 12 Hours at 25°C (77°F)35Shore AD2240
Hardness vs RT Cure 1 Day at 25°C (77°F)38Shore AD2240
Hardness vs RT Cure 2 Days at 25°C (77°F)42Shore AD2240
Hardness vs RT Cure 3 Days at 25°C (77°F)50Shore AD2240
Hardness vs RT Cure 4 Days at 25°C (77°F)55Shore AD2240
Hardness vs RT Cure 1 Week at 25°C (77°F)60Shore AD2240
Hardness vs RT Cure 1 Month at 25°C (77°F)65Shore AD2240
Thermal Properties
ValueUnitsTest Method / Conditions
Heat Capacity,Cp 25°C (77°F) 1.74J/g°KD150
Thermal Conductivity 25°C (77°F) 0.441W/m°KD150
Coefficient of Thermal Expansion -65°C to 75°C146ppm/°CE831 E1545
Electrical Properties
ValueUnitsTest Method / Conditions
Dielectric Strength at 25°C (77°F)312Volts/milD149
Volume Resistivity at 25°C (77°F)1.2 x 10 12 Ω-cmD257
Dielectric Constant at 25°C (77°F) 1 kHz6D150
Dielectric Constant at 25°C (77°F) 1 kHz5.4D150
Dielectric Constant at 25°C (77°F) 60 Hz8D150
Dissipation Factor at 25°C (77°F) 1 MHz0.022D150
Dissipation Factor at 25°C (77°F) 1 kHz0.101D150
Dissipation Factor at 25°C (77°F) 60 Hz0.683D150

Safety & Health

Safety & Handling

Avoid all contact with skin, eyes, clothing and food. Wash thoroughly after handling.

Storage & Handling

Shelf Life & Storage Info

KEY Tough-Seal 41A (PC2041A) 3 Months from Date of Manufacture (15°C to 35°C)

KEY Tough-Seal 41A (PC2041A) 12 Months from Date of Manufacture (-18°C to 3°C)

KEY Tough-Seal 41B (PC2041B) 12 Months from Date of Manufacture (-18°C to 35°C)

KEY Tough-Seal 41 Cartridges 3 Months from Date of Shipment (15°C to 35°C)

KEY Tough-Seal 41 Cartridges 12 Months from Date of Shipment (-18°C to 3°C)