Applications

HumiSeal® 1A33 Gel – Thixotropic Polyurethane Paste – General Printed Circuit Board Applications

Item Name: HumiSeal® 1A33 Gel
Manufacturer: HumiSeal
Technologies: Single-component thixotropic polyurethane paste
Color: Not specified
Cure Type:

  • 30 days at room temperature
  • 30 hours at 76°C
  • 20 hours at 87°C
    Package Size: Contact to Avantek for details.
    Shelf Life: 24 months

1. Product Overview

HumiSeal® 1A33 Gel is a single-component thixotropic polyurethane paste designed for general printed circuit board (PCB) applications. It does not contain free isocyanates, fluoresces under UV light for easy inspection, and complies with RoHS 2011/65/EU Directive.

2. Applications

  • Protection of printed circuit boards (PCBs)
  • Suitable for use with cleaned substrates or low-residue, “no clean” assembly materials
  • Compatible with automated and manual syringe dispensing
  • Used in electronics manufacturing for insulation and environmental protection

3. Typical Properties (Before Mixing)

Property Value
Solids Content (Fed-Std-141, Meth. 4044) 44 ± 2 %
VOC 521 g/L
Dielectric Withstand Voltage (MIL-I-46058C) > 5000V
Dielectric Breakdown 42 KV/mm
Curing Time to Reach Optimum Properties 30 days @ RT, 30 hrs @ 76°C, 20 hrs @ 87°C
Shelf Life at Room Temperature 24 months
Recommended Stripper HumiSeal® Stripper 1063

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