Two-Component Potting Compounds

LETBOND® Two-Component Potting Compounds Adhesives

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Description

The LETBOND® Two-Component Potting Series (5350-1, 5350, and 8719) is specifically engineered for the potting, filling, and encapsulation of electronic components, combining mechanical strength, electrical insulation, and thermal stability. Models 5350-1 and 5350 are black, flame-retardant formulations that comply with UL 94 V-0 (RTI: 90°C) standards, making them ideal for high-reliability electrical applications. Model 8719 is a clear, low-viscosity formulation designed for applications requiring visualization and high-flow encapsulation.

Features

  • Flame Retardant Certification： Models 5350-1 and 5350 are certified to meet UL 94 V-0 (RTI: 90°C) standards.
  • Diverse Options： Available in black viscous (5350-1, 5350) and clear (8719) versions to meet various aesthetic and process requirements.
  • Operational Flexibility： Simple mixing ratios with the ability to cure naturally at room temperature or be accelerated with heat.
  • Excellent Physical Properties： Features high insulation, low water absorption (<0.5%), and excellent thermal shock resistance.
  • Reliable Protection：Suitable for environments ranging from -40°C to +150°C, providing stable, long-term protection.

Applications

  • 5350-1： Encapsulation of PCB components and anti-theft potting for electronic modules requiring high reliability.
  • 5350： Potting for automotive spark plug high-voltage coils; ideal for high-temperature and high-voltage environments.
  • 8719：Clear, low-viscosity potting resin for electronic component protection and detailed filling where visual inspection is required.

Selection Specifications

Model Color
(A : B)		 Viscosity (cps)
(A : B)		 Mix Ratio (Vol.)
(A : B)		 Cure Time Working Time
(min)		 Hardness (Shore)
5350
Black / Pale Yellow
17k～29k : 800～1,400
4:1
24 hr (25℃)
2–4 hr@60–80℃
60
D 80~90
5350-1
Black / Pale Yellow
17k～29k : 30k～50k
2:1
24 hr (25℃)
2–4 hr@60–80℃
100
D 80~90
8719
Clear / Clear
10,500～17,500 : 1～50
3:1
24 hr (25℃)
2–4 hr@60–80℃
150
D 85

Notes:

  • The values above are for reference only; actual values are based on the Certificate of Analysis (COA) of the shipped batch.