0543 Polysulfide Adhesive

Resistant to fuels, oils, lubricants, water & weather

0543 is a one‐component, grey, thermally conductive, precision mixed, degassed, and frozen polysulfide adhesive. A fuel resistant material that is flexible when cured, 0543 is compliant with HMS 16‐1985, Compound II, Class 2, Grade 1. 0543 can be cured at either room or elevated temperatures. This material is thixotropic when applied and features a very low glass transition temperature as well as having a thermal conductivity of 0.7 (W/mK). It has a long pot life of 2 hours and is an ideal fillet material. Along with fuels, 0543 is resistant to lubricants, oils, water, and weather and adheres well to most metals.


Pot Life @ 25°C2 hours
Viscosity @ 25°CPaste
Shelf Life @ ‐40°C6 months

Cure Options

16 hours @ 74°C 3 days @ 25°C

Cured Properties

Based on cure of 16 hours @ 74°C

Shore A Hardness55
Glass Transition Temp (°C)‐48

Electrical Properties

Volume Resistivity (ohm‐cm)1.5E 10 @ 500 VDC

Thermal Properties

Based on cure of 16 hours @ 74°C

Glass Transition Temp (°C)‐48
Degradation Temp. (°C)250
Thermal Conductivity (W/mK)0.7
Operating Temp. Range (°C)‐60 to 135

Acoustic Properties

Velocity (m/s)1,667
Impedance (MRayles)3.616
Loss (dB/cm‐MHz)‐15.1
Density (g/cc)2.17

Key Features

  • Excellent Fillet Material
  • Thermally Conductive
  • HMS 16‐1985, Compound II, Class 2, Grade 1
  • Resistant to Fuel, Lubricants, Water, and Weather
  • Room or Elevated Temperature Cure

The data contained herein is provided for informational purposes only and are believed to be reliable. APPLI-TEC does not guarantee suitability of this product for any resultant application or freedom from patent infringement. Furthermore, APPLI-TEC disclaims any liability for incidental and consequential damages of any kind including but not limited to lost profits.

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