Dow Dowsil 3-1595 Silicone Adhesive

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Description for Dow Dowsil 3-1595 Silicone Adhesive

One-part, gray, soft thixotropic adhesive with high elongation values and UV indicator for inspection, Heat cure.

Brand	Dowsil
Application Type	Bond, Sealing, Gasketing
1 Part or 2 Part	1 Part
Material Form	Liquid, Silicone elastomer
Substrate	Aluminum, ABS
Industry	Connector sealing, Lighting, Engine controllers
Manufacturer	Dow
Chemistry	Silicone elastomer, Silicone
Cure Method	Moisture, RTV, Neutral cure
Cure Temperature (°C)	125, 150
Cure Time (min)	60, 30
Viscosity (cPs)	610,000
Color	Gray
High Temperature Resistance (°C)	200
Low Temperature Resistance (°C)	-45, -55

Best Practices for Dow Dowsil 3-1595 Silicone Adhesive

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Technical Data for Dow Dowsil 3-1595 Silicone Adhesive

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Overview

Application Type
- Gasketing
- Adhesive - Bond
- Sealant - Sealing
1 Part or 2 Part
- 1 Part or 2 Part - 1 Part
Material Form
- Elastomer - Silicone elastomer
- Liquid
Substrate
- Aluminum
- Plastic - ABS
Industry
- Lighting
- Other Transportation - Transmission
- Connectors - Connector sealing
- Industrial - Sealing housings, Sealing lids
- Engine - Engine controllers
- Construction - Attaching baseplates
Chemistry
- Silicone - Silicone elastomer
Application Method
- Dispenser - Automated or manual needle dispense
Cure Method
- Moisture / Condensation Cure - Moisture
- RTV (Room Temperature Vulcanization) - RTV
- Other - Neutral cure
Color
- Gray
Brand
- Dowsil

Specifications

Cure Specs

Cure Temperature (°C)	125, 150	Test Method
Cure Time (min)	60, 30	Test Method
Viscosity (cPs)	610,000
Work / Pot Time (min)	Long	Test Method
Thixotropic	Soft thixotropic

Bond Strength

Shear Strength (psi)	215	Test Method
Tensile Strength (psi)	240

Material Resistance

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

Conductivity

Dielectric Strength (V/mil)	Good, Durable dielectric insulation

Hardness

Elongation (%)	800, High
Shore OO Hardness	65
Flexibility	Flexible
Modulus (psi)	Low

Other Properties

Specific Gravity	1.060	Test Method

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 25°C (77°F). 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 Type	from date of manufacture
Shelf Life (mon)	12

Not Good For

Don't Use With	Plastic, Rubber

Best Practices for Dow Dowsil 3-1595 Silicone Adhesive

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1. Surface Preparation
  
  All surfaces should be thoroughly cleaned and/or degreased with Dow 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
  
  No mixing required
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.
4. Testing
  
  Due to the wide variety of substrate types and differences in substrate surface conditions, general statements on adhesion and bond strength are impossible. To ensure maximum bond strength on a particular substrate, cohesive failure of the product in a lap shear or similar test is needed to ensure compatibility of the adhesive with the substrate being considered. Also, this test can be used to determine minimum cure time or to detect the presence of surface contaminants such as mold release agents, oils, greases and oxide films.
Comparable Materials for Dow Dowsil 3-1595 Silicone Adhesive

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Spec Engine^® Results
- Dowsil 3-1944 RTV Coating(Dow)
  Coating or adhesive with added UV indicator, good flowability, fast tack free time, good flame resistance, MIL A-46058 tested, Require atmospheric moisture to cure needing no expensive ovens, and various viscosity version faciliate different application methods.
- SE 4422 Thermally ConDuctive Adhesive(Dow)
  One-part moisture cure; high viscosity with moderate thermal conductivity; fast tack-free.
- SE 4420 Thermally ConDuctive Adhesive(Dow)
  One-part moisture cure; flowable with moderate thermal conductivity; fast tack-free.
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