UR5125 High Temperature Polyurethane Resin

In Stock

UR5125 is a two-part polyurethane encapsulation resin that has been primarily developed for encapsulation of electrical components that require high temperature performance. UR5125 has a wide operating temperature range, (-60°C to +150°C) with the flexibility of a polyurethane to allow changes in temperature that afford identical levels of protection to the potted component or unit. It has excellent resistance to salt water, making it an ideal choice for marine applications such as underwater sensors or other seaborne electronics exposed to the elements and its flexibility allows resistance to low temperatures which may be associated with underwater applications.


Approvals RoHS Compliant (2015/863/EU): Yes
Typical Properties
Liquid Properties: Base Material Polyurethane
Density Part A – Resin (g/ml) 0.93
Density Part B – Hardener (g/ml) 1.22
Part A Viscosity (mPa s @ 23ºC) 3500
Part B Viscosity (mPa s @ 23ºC) 150
Mixed System Viscosity (mPa s @ 23ºC) 2400
Mix Ratio (Weight) 2.50 : 1
Mix Ratio (Volume) 3.27 : 1
Usable Life (20°C) 20 mins
Gel Time (23°C) 45 mins
Cure Time (23°C) 24 hours
Cure Time (60°C) 4 hours
Colour Part A – Resin Black
Colour Part B – Hardener Brown
Storage Conditions Dry Conditions: Above 15°C, Below 30°C
Shelf Life 18 months
Exotherm <50°C
Shrinkage <1%
Cured System: Cured Density (g/ml) 1.00
Temperature Range (°C) -60 to +150
Max Temperature (°C) (Short Term 30 mins) 160
Shore Hardness @ 25°C A80
Colour (Mixed System) Black
Flame Retardant No
Dielectric Strength (kV/mm) 18
Volume Resistivity (Ω.cm) 1012
CTE 150 ppm/°C
Water Absorption <0.5%/<1.0%

Back to Top