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LOCTITE STYCAST 933-48 – Epoxy Encapsulant – High temperature encapsulation for automotive sensors and electronic devices

  • Item Name: LOCTITE STYCAST 933-48
  • Manufacturer: Henkel Corporation
  • Product category: Epoxy encapsulant
  • Technologies: One-component epoxy system with excellent thermal shock and high temperature properties
  • Applications: Designed for encapsulating and potting automotive sensors and other electronics that must withstand harsh thermal and mechanical shock.
  • Color: Black liquid
  • Cure type: Heat cure
  • Package size: Contact to Techniq VN for details
  • Shelf life: 150 days (when stored at 8 to 28°C)

1. Product Overview

LOCTITE STYCAST 933-48 is a one-component, heat-cure epoxy encapsulant designed for high-temperature applications. It provides good thermal shock resistance and operates effectively between -40 to +180°C. The material is ideal for automotive sensors and electronic devices that require durability under extreme conditions.

2. Applications

  • Encapsulation and potting of electronic components
  • Protection against thermal and mechanical shock
  • Suitable for automotive sensors and high-temperature electronic devices

3. Typical Properties

Uncured Properties
Property Value
Appearance Black liquid
Density 1.45 g/cm³
Viscosity (Brookfield) 150,000 mPa·s (cP)
Shelf Life (@ 8–28°C) 150 days
Curing Performance
Cure Temperature Time Required
120°C 150 min
160°C 30 min
175°C 12 min
Cured Properties
Property Value
Hardness (Shore D) 85 (@ 25°C), 39 (@ 120°C)
Glass Transition Temperature (Tg) 106°C
Coefficient of Thermal Expansion Alpha 1: 38 ppm, Alpha 2: 127 ppm
Electrical Properties
Property Value
Volume Resistivity (@ 25°C) 1.0 × 10¹⁴ ohm-cm
Dielectric Strength 13.8 kV/mm

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