Applications

H.B. Fuller 1536 Electrical Potting Sealant – One-component silicone sealant for insulating and protecting electronic assemblies.

  • Item Name: 1536 Electrical Potting Sealant

  • Manufacturer: H.B. Fuller

  • Technologies: Neutral alkoxy-cure silicone

  • Color: Transparent

  • Cure Type: Room temperature, moisture-cured

  • Package Size: Contact to Techniq VN for details.

  • Shelf Life: 9 months

1. Product Overview

1536 Electrical Potting Sealant is a transparent, flowable, one-component neutral alkoxy-cure silicone sealant. It cures at room temperature through exposure to moisture in the atmosphere. The sealant is low-odor, solvent-free, and provides high performance in insulation, excellent adhesion to glass, ABS, and PCB substrates, with superior resistance to thermal cycling, damp-heat, and damp-freezing.


2. Applications

  • Electrical potting and sealing

  • Insulation for PCB, glass, and ABS substrates

  • Applications requiring high resistance to thermal and humidity stress

3. Typical Properties

Property Value Test Method / Condition
Viscosity 8,000–11,000 cPs Brookfield LVDV-Ⅰ -64#/30RPM
Density 1.04 ± 0.05 g/cm³ (before cure)
Tack Free Time 5–20 min 23±2°C, 50±5% RH
Cure Depth / 24 h 2 mm 23±2°C, 50±5% RH
Hardness (Shore A) 30 ± 5 ISO 7619
Tensile Strength 2.0 MPa ISO 37
Elongation to Break 220% ISO 37
Volume Resistivity 1.0 × 10¹⁴ Ω·cm IEC 60093
Breakdown Voltage 15 kV/mm IEC 60243-1
Appearance / Consistency Transparent, flowable
Curing Moisture-cured at ambient temperature
Components One-component
Storage Conditions ≤28°C, dry, unopened container
Shelf Life 9 months

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