Applications

H.B. Fuller URALITE FH1270 – Two-component polyurethane electrical protective coating for printed circuit assemblies insulation

  • Item Name: URALITE FH1270

  • Manufacturer: H.B. Fuller

  • Technologies: Two-component Thermosetting Polyurethane

  • Color: Part A – Yellow, Part B – Colorless

  • Cure Type: Thermal/Room Temperature Cure

  • Package Size: Contact to Techniq VN for details.

  • Shelf Life: 12 months

1. Product Overview

URALITE FH1270 is a two-component, high-solids, thermosetting polyurethane electrical protective coating. It is non-toxic and designed as an insulating compound for coating printed circuit assemblies. FH1270 conforms to Raytheon’s HMS #16-1847 Rev. L, Type II, Class 1, and is suitable for high-solids brush applications.


2. Applications

  • Insulating coating for printed circuit assemblies

  • Protective coating for electrical and electronic components

  • Suitable for applications requiring high dielectric strength and chemical resistance

3. Typical Properties

Property Part A Part B Blend Test Method / Condition
Blending Ratio (by weight) 66 100
Color Yellow Colorless Yellow
Density (lb/gal) 7.91 9.4 8.75 ASTM D0792
Gel Time (83 g, 23°C) >6 h
Odor Ester-like solvent
Shelf Life 12 months 12 months
Solid Content (non-volatiles) 75% 60% TMWB052
Specific Gravity 0.95 1.13 D792/D1475
Tack-Free Time (93°C) 25–30 min TMTS074
Viscosity (25°C) 500 cP 300 cP 300 cP TMTS001
Viscosity Flow Index (Zahn #2) 36–44 s TMSC077
Dielectric Strength 579 V/mil
Dielectric Constant at 1 MHz 3.26
Dissipation Factor at 1 MHz 0.021
Volume Resistivity 1.9×10¹⁶ Ω·cm
Surface Resistivity 8.22×10¹⁶ Ω

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