Print Back
Ensuring that electronics products function as they are designed to is just one piece of the materials solution Henkel delivers. Protecting printed circuit boards and electronic assemblies from thermal cycling and adverse environmental conditions is the other critical component for product durability and reliability. Under the leading Hysol® and Stycast™ brands, Henkel offers several PCB protection products to minimize external product stress and maximize performance. Our portfolio of conformal coatings keeps moisture, humidity and other adverse conditions from deteriorating printed circuit boards used in harsh marine, automotive, aerospace and consumer electronics applications. Henkel also strives to keep environmental consciousness at the forefront of all our product development efforts, which is why we have moved toward solvent-free, low-VOC materials and processes.

Henkel’s potting and encapsulation compounds protect PCBs and electrical devices by enhancing mechanical strength, offering electrical insulation, and protecting against vibration and shock.
Epoxy Encapsulant Product
Unit of Measure
Items Epoxy Encapsulant Product
2651/Catalyst 9
Epoxy Encapsulant Product
Epoxy Encapsulant Product
2651/Catalyst 11
Epoxy Encapsulant Product
Epoxy Encapsulant Product
2651/Catalyst 23LV
Epoxy Encapsulant Product
Epoxy Encapsulant Product
2651-1
Epoxy Encapsulant Product
Epoxy Encapsulant Product
2741 LV/Viscosity 30000
Epoxy Encapsulant Product
Type N/A General Purpose
Catalyst N/A 9 N/A 11 N/A 23LV N/A N/A 15LV
Viscosity at 25 ºC N/A 32000 cps N/A 25000 cps N/A 3200 cps N/A 52000 cps N/A 30000 cps
Mix Ratio (wt) N/A 100:7 N/A 100:8.5 N/A 100:15 N/A N/A 100:25
Cure Schedule N/A Room N/A Heat N/A Room N/A Heat N/A Room
Specific Gravity N/A 1.56 g/cc N/A 1.56 g/cc N/A 1.50 g/cc N/A 1.6 g/cc N/A 1.43 g/cc
Hardness N/A 88 D N/A 88 D N/A 86 D N/A 88 D N/A 82 D
Tensile Strength N/A 6500 psi N/A 9000 psi N/A 6500 psi N/A 8000 psi N/A 6900 psi
CTE N/A 43.3 ppm/ºC N/A 40 ppm/ºC N/A 54.7 ppm/ºC N/A 45 ppm/ºC N/A 55 ppm/ºC
Thermal Conductivity N/A 0.66 W/m·K N/A 0.66 W/m·K N/A N/A 0.58 W/m·K N/A
Service Temperature N/A –40 to 130 ºC N/A –55 to 155 ºC N/A –65 to 105 ºC N/A –40 to 155 ºC N/A –40 to 90 ºC
Dielectric Strength N/A 450 V/mil N/A 450 V/mil N/A 450 V/mil N/A 440 V/mil N/A 400 V/mil
Dielectric Constant at 1 MHz N/A 3.9 N/A 3.9 N/A 4.1 N/A 3.7 N/A 3.27
Volume Resistivity at 25 ºC N/A 5 x 1015 O/cm N/A 5 x 1016 O/cm N/A 5 x 1014 O/cm N/A 1 x 1015 O/cm N/A 1 x 1015 O/cm