Dow 3165 Fast Tack RTV Adhesive/Sealant

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Description for Dow 3165 Fast Tack RTV Adhesive/Sealant

Fast tack-free time; noncorrosive; good green strength; good room-temperature adhesion to most substrates; non-flow.

Brand	Dowsil
Application Type	Bond, Seal, Gaskets
1 Part or 2 Part	1 Part
Material Form	Liquid, Silicone elastomer
Substrate	Ceramics, Glass, Reactive metals, Plastics, Aluminum, Resins
Industry	Circuit boards, Light Emitting Diodes (LEDs), E-Mobility Solutions, Smart Meters, Smart Home Devices, CRT module, Electrical leads, Electronic equipment, Electronics, LCD module, Modules, PDP module, Power supplies, PWBs, Staking components
Manufacturer	Dow
Chemistry	Silicone elastomer
Cure Method	Moisture, RTV
Cure Temperature (°C)	Faster or lower, 20 to 25, 20 to 25

Viscosity (cPs)	Non-flow
Color	Gray
High Temperature Resistance (°C)	200
Low Temperature Resistance (°C)	-45, -55
Key Specifications	UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association): UL 94: UL 94 V-0

Best Practices for Dow 3165 Fast Tack RTV Adhesive/Sealant

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Technical Data for Dow 3165 Fast Tack RTV Adhesive/Sealant

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Overview

Application Type
- Gasketing - Gaskets
- Adhesive - Bond
- Sealant - Seal
1 Part or 2 Part
- 1 Part or 2 Part - 1 Part
Material Form
- Elastomer - Silicone elastomer
- Liquid
Substrate
- Ceramic - Ceramics
- Glass
- Metal - Reactive metals
- Aluminum
- Plastic - Plastics, Resins
- Other - Selected laminates
Industry
- LED (Light-Emitting Diodes) - Light Emitting Diodes (LEDs)
- E-Mobility Solutions
- Electronics - Circuit boards, CRT module, Electrical leads, Electronic equipment, LCD module, Modules, PDP module, Power supplies, PWBs, Staking components
- Smart Meters
- Smart Home Devices
- Power Supplies
- Industrial - Housings, Yoke
- Appliances
Chemistry
- Silicone - Silicone elastomer
Application Method
- Dispenser - Automated or manual needle dispense systems
Cure Method
- Moisture / Condensation Cure - Moisture
- RTV (Room Temperature Vulcanization) - RTV
Color
- Gray
Key Specifications
- UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association): UL 94: V0 - UL 94 V-0
Brand
- Dowsil

Specifications

Cure Specs

Cure Temperature (°C)	Faster or lower, 20 to 25, 20 to 25
Cure Time (min)
Viscosity (cPs)	Non-flow
Tack Free Time (min)	Fast	Test Method

Bond Strength

Shear Strength (psi)	200	Test Method
Green Strength (psi)	Good
Tensile Strength (psi)	125

Material Resistance

Flame Resistance	Good flame resistance
Environmental Resistance	Environmental resistance
High Temperature Resistance (°C)	200
Low Temperature Resistance (°C)	-45, -55
Moisture/Humidity Resistance	Moisture/humidity resistance

Conductivity

Dissipation Factor	0.00300, <0.00020	Test Method
Dielectric Strength (V/mil)	Good, Durable
Dielectric Constant	2.22, 2.38	Test Method
Volume Resistivity (O)	2.4E+15 (ohms/cm)

Hardness

Shore A Hardness	35
Elongation (%)	185
Shore OO Hardness	83
Flexibility	Flexible

Other Properties

Specific Gravity	1.350
Coefficient of Thermal Expansion (CTE)	250 (Linear (micron/m °C or ppm ))

Business Information

Shelf Life Details	Shelf life is indicated by the “Use Before” date found on the product label.For best results, Dow Corning RTV adhesives should be stored at or below the storage temperature listed on the product label. Special precautions must be taken to prevent moisture from contacting these materials. Containers should be kept tightly closed with head or air space minimized. Partially filled containers should be purged with dry air or other gases, such as nitrogen.
Shelf Life Temperature (°F)	77
Shelf Life Type	From date of manufacture
Shelf Life (mon)	12

Not Good For

Don't Use With	Highly plasticized plastic, Highly plasticized rubber

Best Practices for Dow 3165 Fast Tack RTV Adhesive/Sealant

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1. Surface Preparation
  
  All surfaces should be thoroughly cleaned and/or degreased with Dow Corning® brand OS Fluids, naphtha, mineral spirits, methyl ethyl ketone (MEK) or other suitable solvent. Solvents such as acetone or isopropyl alcohol (IPA) do not tend to remove oils well, and any oils remaining on the surface may interfere with adhesion. Light surface abrasion is recommended whenever possible, because it promotes good cleaning and increases the surface area for bonding. A final surface wipe with acetone or IPA is also useful. Some cleaning techniques may provide better results than others
  
  users should determine the best techniques for their particular applications.
2. Mixing
  
  Upon standing, some filler may settle to the bottom of the liquid containers after several weeks. To ensure a uniform product mix, the material in each container should be thoroughly mixed prior to use. Two-part materials should be mixed in the proper ratio (1:1 or 10:1) either by weight or volume. The presence of light colored streaks or marbling indicates inadequate mixing.
3. Deairing/Degassing
  
  Automated airless dispense equipment can be used to reduce or avoid the need to de-air. If de-airing is required to reduce voids in the cured elastomer, consider a vacuum de-air schedule of >28 inches Hg for 10 minutes or until bubbling subsides.
Comparable Materials for Dow 3165 Fast Tack RTV Adhesive/Sealant

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Spec Engine^® Results
- 3145 RTV Grey Adhesive/Sealant(Dow)
  Noncorrosive; high tensile strength, elongation, peel and lap shear values, good for high temperature applications; non-flow.
- 3145 RTV Clear Adhesive/Sealant(Dow)
  Noncorrosive; high tensile strength, elongation, peel and lap shear values, contains UV indicator for automated inspection; non-flow.
- 839 Silicone Adhesive/Sealant(Dow)
  Silicone adhesive sealant one-part, translucent blue, moisture cure adhesives are generally cured at room temperature, non-flowing, automated or manual needle dispensing systems.
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