Applications

Techspray Fine-L-Kote SR Silicone Conformal Coating – Conformal Coating – Electronics Protection

  • Item Name: Fine-L-Kote SR Silicone Conformal Coating
  • Manufacturer: Techspray
  • Technologies: Silicone-based conformal coating
  • Color: Not specified
  • Cure Type: Ambient cure (72 hours) or Accelerated cure (30 min @ 32°C + 45 min @ 93°C)
  • Package Size: 12 oz. aerosol, 1 pint liquid, 1 gallon liquid
  • Shelf Life: 1 year

1. Product Overview

Fine-L-Kote SR Silicone Conformal Coating is a high-performance silicone-based coating designed to provide universal protection for electronic assemblies against harsh environmental conditions. It offers exceptional thermal, moisture, chemical, and vibration resistance. The product is UL recognized (UL746E) and IPC-CC-830B qualified, making it suitable for critical applications in electronics and industrial systems.


2. Applications

  • Protection of printed circuit boards (PCBs) from moisture, chemicals, and vibrations

  • Ideal for high-reliability applications in automotive, aerospace, military, and industrial electronics

  • Suitable for use with dip coating, selective spray systems, and manual aerosol/brush applications

  • Reworkable and removable using soldering or conformal coating remover

3. Typical Properties – Unmixed and After Curing

Property Unmixed (Liquid) After Curing
Physical State Liquid Solid film
Odor Characteristic Odorless
Percent Volatile 86%
Boiling Point 134°F (79°C)
Flash Point 10°F (-12.2°C)
Solubility in Water Insoluble Insoluble
Specific Gravity 0.830
Viscosity (Bulk) 4–10 cps
VOC Content 481 g/L (Aerosol: 46%, Bulk: 58%)
Shelf Life 1 year
Solids Content Aerosol: 11%, Bulk: 14%
Coverage 1 mil dry film: Aerosol – 16 ft²; Bulk – 224 ft²
UV Indicator Yes Yes
Tack-Free Time ~60 minutes
Full Cure Time 72 hours (ambient), Accelerated: 30 min @ 32°C + 45 min @ 93°C
Operating Temperature Range -65°C to 200°C Same
Dielectric Strength 1 kV/mil
Dielectric Constant 2.66
Insulation Resistance 6.87 x 10¹⁵ ohms
Coefficient of Thermal Expansion 2.1 x 10⁻⁴ in/in/°C
UL Rating UL 94 V-0
IPC-CC-830 Qualification Yes
Ease of Rework Excellent (via soldering or remover)

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