ASI 306 Electronic Grade Neutral Cure Self Leveling Silicone

About the ASI 306 Electronic Grade Self Leveling Silicone

ASI 306 is an Electronic Grade Self-Leveling Silicone. The 306 is a one component RTV silicone that has a excellent adhesion to a wide variety of substrates including glass, metals, most woods, ceramics and various plastics.  This 100% silicone sealant resists weathering, moisture, vibration, ozone, ultraviolet and temperature extremes.  The 306 Electrical Grade Self Leveling Sealant remains flexible from -70°F to 400°F.  

ASI 306 Specifications

• FDA Status: Permitted under regulations of the Food and Drug Administration where incidental food contact might be involved.  FDA Regulation Number is 177.2600.
• Military Specifications: Meets requirements of MIL-46106 Type II

Additional Features

• Safe for Use On or Around Electronics
• High Performance, Excellent Adhesion
• Resistant to UV degradation and Weathering
• Ready to Use, One Component
• Does Not Contain Acetic Acid or Solvents
• Low Odor, Non Corrosive
• Low Compression Set and Excellent Oil Resistance

ASI 306 Silicone Bonds To

• Aluminum
• Porous substrates (concrete, mortar, brick)
• Glass
• Rubber
• Metals
• Most Woods
• Most Plastics
• Porcelain
• PVC
• Vinyl
• Steel

Uncured Specifications:

• Type: One-part, self-leveling RTV
• Appearance: Smooth, thick liquid
• Specific Gravity: Clear 1.02 – Colors 1.04
• Application Temperature Range: -18°C to +50°C (0°F to 120°F)
• Cure method: Neutral, non-corrosive, moisture cure
• Skin Over Time: 40 minute Stop
• Cure Time: 24 Hours (1/8 thickness)
• Slump/Sag: Flowable

Cured Specifications:

• at 25°C (77°F) and 50% R.M. for 7 days (1/8” thick)
• Durometer Hardness (Shore A): (ASTM D 2240) 25
• Tensile Strength (ASTM D 412): 230 psi (1.6 MPa)
• Elongation at Break (ASTM D 412): 400°c
• Tear Resistance (ASTM D 624, Die B): 26 ppi (4.6 kN/m)
• Temperature Range After Cure: -57°C to +204 C (-70°F to +400°F)
• Shrink Factor: Nil
• Thermal Expansion Coefficient: 9 x 10 1/K 0 C to 100°C (32°F to 212°F)

Electrical Properties

• Dielectric Strength (ASTM D 149): 452 V/mil (173 KV/cm)
• Volume Resistivity (ASTM D257): >2.19 x 10 ohm/cm
• Dissipation Factor (ASTM D 150): 0.00106 at 100 Hz 0.00022 at 10kHz
• Dielectric Constant (ASTM D 150): 2.71 at 100 Hz 2.71 at 10 kHz 

American Sealants 306 Silicone Data Sheets

ASI 306 Technical Data Sheet

• ASI 306 TDS

ASI 306 Material Safety Data Sheet

• ASI 306 MSDS