Capacitors / Transistors Potting

EFI Polymers makes epoxy potting and urethane potting materials for capacitors, transistors, and other power supply and transmission components.  Our materials are designed to increase performance, add protection from water, dust, vibration and other elements, while reducing overall costs.  By leveraging our experience in the industry, we can also offer processing support and other technical services.  We have several epoxy and urethane potting materials designed for this industry, these materials are characterized as:

  • UL 94 recognized:  many of these materials have been tested and verified by third-party Underwriter’s Laboratory to be flame retardant.
  • Low viscosity:  allows the mixed material to easily flow into tight spaces on your part, releasing trapped air.
  • Machine dispense friendly: these products are designed to have a machine friendly mix ratio and viscosity, making processing of these materials that much easier.
  • Thermally conductive:  mineral filler inside our potting materials help to disperse heat generated by your part.
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System ID Comments Mix Ratio
by Volume
Mixed Viscosity
at 77F
Mixed Density
Lb/Gal
Mixed Color Gel Time Gel Time
Mass
Hardness
Shore Type
Hardness
Value
Room
Temperature
Cure, Y/N
Volume Resistivity Insulation Resistivity Surface Resistivity
30219/40002
flame retardant, very fast, low-cost urethane
100:20.2
3600
12.5
Black
11
50
D
50
Yes
5.5x10E12
100x10E12
30214/40002
flame-retardant, rapid setting, excellent electrical properties
100:20.8
11.9
Yellow
11
200
A
88
Yes
5.8x10E14
>200x10E12
20279/50080
flame retardant, low-water absorption, excellent gloss when with elevated temperature cure
100:16.5
3100
13.4
Black
90
200
D
85
Yes
9.1x10E15
20279/50013
long work life, flame retardant, non-blushing potting compound
100:21
13.2
Black
300
200
D
70
Yes
System ID Comments Mix Ratio
by Volume
Mixed Viscosity
at 77F
Mixed Density
Lb/Gal
Mixed Color Gel Time Gel Time
Mass
30219/40002
flame retardant, very fast, low-cost urethane
100:20.2
3600
12.5
Black
11
50
30214/40002
flame-retardant, rapid setting, excellent electrical properties
100:20.8
11.9
Yellow
11
200
20279/50080
flame retardant, low-water absorption, excellent gloss when with elevated temperature cure
100:16.5
3100
13.4
Black
90
200
20279/50013
long work life, flame retardant, non-blushing potting compound
100:21
13.2
Black
300
200