Try Our New Flame Resistant Potting Compounds

April 7, 2014

April 7, 2014 - Epoxies and urethanes meet UL 94 V–0 requirements

When it comes to electronics encapsulation, it can be difficult to find potting compounds that strike the right balance between flame resistance and all the other material property requirements. For example, not all flame resistant potting compounds will have the thermal properties, electrical characteristics, hardness or viscosity that you need.

To make it easier to find the right flame resistant compound for your application, we've developed a broad new lineup of compounds that have passed UL 94 V–0 flame tests.

Consisting of both epoxy and urethane potting compounds, this new UL 94 lineup targets a range of encapsulation applications—such as power supplies, sensors, transformers, switches and other electrical components.

These UL 94 V–0 formulations include:

  • 20–2362 FR Urethane combines an ultra-low viscosity of 2,500 cP, a hardness of 90 Shore A and a glass transition temperature of –70ºC. It offers a continuous operating temperature range from –40 to 125ºC.
  • 50–2369 FR Urethane has been optimized for a low-exotherm cure and excellent electrical properties—among them a dielectric strength of 540 V/mil and a surface resistivity of 6.0 x 1017 Ω/sq. It supports continuous operating temperatures from –65 to 135ºC.
  • 50–3150 FR Epoxy offers superior heat transfer, low shrinkage and insulation properties. Continuous operating temperature for this material can range from –60 to 200ºC.
  • 50–3152 FR Epoxy maximizes shock and vibration resistance. This semi-rigid compound also exhibits a high thermal conductivity of 7.0 btu-in/hr-ft2-ºF. Continuous operating temperatures for this epoxy can range from –40 to 135ºC. Designed for ease-of-use, 50–3152 FR has a 1:1 mix ratio.

To find out if one of these compounds is right for your application, request a free evaluation sample. Or get information on custom flame resistant formulations from