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DOWSIL™ 3145 RTV Mil-A-46146 Adhesive / Sealant

  • Brand Name: DOWSIL™ RTV Mil-A-46146 Adhesive / Sealant
  • Available Sizes: 305 mL cartridges.
  • Shelf Life: Approximately 12 months from the date of manufacture.

DOWSIL™ 3145 RTV MIL-A-46146 Adhesive/Sealant – Gray is a one-part, non-flowing silicone adhesive designed for high-strength bonding and sealing applications. It cures at room temperature with moisture in the air, eliminating the need for ovens, and offers enhanced thermal stability. This product meets MIL-A-46146 Group II/III, Type I specifications, making it suitable for military and aerospace applications.

 

Applications:

  • Sealing openings in modules and housings
  • Adding mechanical stability to individual components
  • Assembly of components on printed wiring boards (PWBs)
  • Sealing in and around wired and electrical leads
  • Yoke assembly

DOWSIL™ 3145 RTV MIL-A-46146 Adhesive/Sealant – Gray

Typical Properties:

Property Unit Value
Extrusion Rate g/min 121
Flow Rate – Slump inches 0.004
Tack-Free Time at 25°C minutes 78
Specific Gravity (Cured) 1.12
Non-Volatile Content (NVC) % 96.2
Tensile Strength psi (MPa) 1035 (7.1)
Elongation % 670
Tensile Modulus psi (MPa) 150 (1.1)
Tear Strength (Die B) ppi (N/cm) 190 (132)
Durometer Hardness Shore A 51
Primed Adhesion – 180° Peel Strength ppi (N/cm) 106 (72.5)
Hardening Transition by DSC °F (°C) -43.6 (-42)
Shelf Life at 25°C months 12
MIL Specification MIL-A-46146 Group II/III, Type I

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