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CSL Silicones CSL542 Silicone Conformal Coating

CSL Silicones CSL542 Silicone Conformal Coating is a one-part, moisture curing, room-temperature vulcanizing (RTV), electronic grade 100% silicone conformal coating.

Product Type: 1K (1 component) Coating, Conformal Coating

Application Method: Brush, Spray

Chemical Family: Silicones

Technical Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

Chemical Family
Type
100% Silicone

Features & Benefits

Features
  • Neutral cure formulation will not corrode copper, brass or silver
  • Excellent hydrophobicity
  • Can be applied by spray, flow and brush techniques
Benefits
  • Resists moisture, vibration, and temperature extremes
  • Electrically insulating
  • UV stable
  • Non-corrosive
  • Processing versatility
  • Printed circuit board manufacturing
  • General EMS
  • Electrical assembly

Applications & Uses

Application Method
Cure Method
Typical Uses
  • Protects circuitry in severe service environments
  • Maintains a low-stress environment for components and connections
  • Protects consumer electronics from everyday temperature and humidity
  • Automotive under-hood applications
  • Military or industrial applications
Drying Time
Skin-Over Time 20 minutes
Tack-Free Time 40 minutes
Cure Time 1 hour (10 mil film)
Full Physical Characteristics 7 days
Surface Preparation

All surfaces should be clean and dry, and free of dust, dirt, and grease.

Application

CSL542 coating can be applied by spray, flow and brush techniques. CSL542 can be removed by soaking in solvent such as toluene, xylene or chlorinated solvents followed by brushing and washing.

Properties

Color
Physical Form
Appearance
Smooth, Pourable Liquid
Physical Properties
ValueUnitsTest Method / Conditions
Specific Gravity (Uncured)0.98--
Extrusion Rate (Uncured, 3.2mm Orifice, 90psi)150.0g/min-
Cure System (Uncured)Neutral (Oxime), Moisture Cure--
Viscosity (Uncured)3000 - 5000cP-
Dielectric Strength (Cured At Standard Conditions* for 7 Days)720.1V/milASTM D149
Volume Resistivity (Cured At Standard Conditions* for 7 Days)min. 1.4 × 10¹²ohms.cmASTM D257
Dissipation Factor (100Hz, Cured At Standard Conditions* for 7 Days)1.017-ASTM D150
Dissipation Factor (100kHz, Cured At Standard Conditions* for 7 Days)0.719-ASTM D150
Dielectric Constant (100Hz, Cured At Standard Conditions* for 7 Days)3.75-ASTM D150
Dielectric Constant (100kHz, Cured At Standard Conditions* for 7 Days)3.85-ASTM D150
Typical Properties
ValueUnitsTest Method / Conditions
Application Temperature Range (Ambient)120.0°F-
Useable Temperature Range-76 to 392°F-
Conditions

*At standard conditions 77°F (25°C) and 50% relative humidity.

Regulatory & Compliance

Certifications & Compliance
Regulatory & Compliance
  • CSL is ISO 9001:2008 Registered
  • CSL542 is Ecologo Certified

Safety & Health

Safety Precautions

CSL542 uses a neutral cure system, so no acetic acid or objectionable by-products are evolved during the cure. Adequate ventilation should be provided with extensive use of this sealant.

On direct contact, the uncured sealant may irritate the eyes. Flush well with water and call a physician. Avoid prolonged contact with skin.

All work involving the application and use of this product should be performed in compliance with all relevant national, Health, Safety & Environmental standards & regulations.

If in doubt regarding the suitability of use of this product, consult CSL Silicones Inc. for further advice.

Packaging & Availability

Packaging Type
Colors

CSL542 is available in Gray. Custom colors are available.

Packaging

CSL542 is available in 3.8L (1 US gallon) cans, 19L (5 US gallon) pails and 189L (50 US gallon) drums.

Storage & Handling

Storage

CSL542, when stored in original, unopened container in dry, shaded conditions, away from sources of heat or ignition, and stored below 32°C (90°F), has a shelf life of 12 months from date of manufacture.