UR5633 Black Polyurethane Resin

In Stock

UR5633 is a two part thermally conductive polyurethane potting and encapsulation compound with a black finish. It maintains excellent electrical properties through a range of operating environments and is a UL94 approved highly flame retardant resin.

UR 5633 does not contain abrasive fillers meaning that it has low wear on dispensing machinery.


Approvals RoHS Compliant (2015/863/EU): Yes
UL Approval: Meets UL94 V-0
Typical Properties
Liquid Properties: Base Material Polyurethane
Density Part A – Resin (g/ml) 1.70
Density Part B – Hardener (g/ml) 1.24
Part A Viscosity (mPa s @ 23ºC) 170000
Part B Viscosity (mPa s @ 23ºC) 50
Mixed System Viscosity (mPa s @ 23ºC) 30000
Mixed System Viscosity (mPa s @ 35ºC) 12000
Mix Ratio (Weight) 12.15:1
Mix Ratio (Volume) 8.83:1
Usable Life (20°C) 15 mins
Gel Time (23°C) 40 mins
Cure Time (23 °C) 24 hours
Cure Time (60 °C) 4 hours
Colour Part A – Resin Black
Colour Part B – Hardener Amber
Storage Conditions Dry Conditions: Above 15ºC, Below 30ºC
Shelf Life 12 Months
(Measured on 100ml sample in a cylinder of diameter 49.4mm @ 23ºC) < 40ºC
Shrinkage < 1%

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