Dow Dowsil Q3-1566 Heat Resistant Adhesive/ Sealant

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Description for Dow Dowsil Q3-1566 Heat Resistant Adhesive/ Sealant

• One-component adhesive/sealant • Cures at room temperature when exposed to moisture in the air • Acetoxy cure system • Non-sag, paste consistency • Good adhesion on many substrates.

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Brand	Dowsil
Application Type	Bond, Sealant
1 Part or 2 Part	1-Part
Material Form	Paste
Industry	Power Tools, Automotive oil, Smart Home Devices
Manufacturer	Dow
Chemistry	Silicone
Cure Method	Room Temperature Cure, Moisture, Acetoxy cure
Cure Temperature (°C)	20 to 25 Room temperature, 23
Cure Time (min)	1,440, 10,080
Viscosity (cPs)	Non-sag
Color	Black
High Temperature Resistance (°C)	Heat Resistant, High temperature resistant
Crack Resistance	No cracks
Extrusion Rate (g/sec)	16,200 270 (g/minute)

Best Practices for Dow Dowsil Q3-1566 Heat Resistant Adhesive/ Sealant

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Technical Data for Dow Dowsil Q3-1566 Heat Resistant Adhesive/ Sealant

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Overview

Application Type
- Adhesive - Bond
- Sealant
1 Part or 2 Part
- 1-Part
Material Form
- Paste
Substrate
- Other - Many substrates
Industry
- Smart Home Devices
- Automotive - Automotive oil
- Industrial - Ovens, Cookers, Other heating equipment
- Power Tools
- Appliances - Ceramic hob
- Other - Other coolant sealing applications
Chemistry
- Silicone
Application Method
- Brush - Brushing
- Spray - Spraying
- Dip - Dipping
Cure Method
- Room Temperature / Air Dry - Room Temperature Cure
- Moisture / Condensation Cure - Moisture
- Other - Acetoxy cure
Color
- Black
Brand
- Dowsil

Specifications

Cure Specs

Cure Temperature (°C)	20 to 25 Room temperature, 23	Test Method
Cure Time (min)	1,440, 10,080	Test Method
Viscosity (cPs)	Non-sag
Tack Free Time (min)	5.00	Test Method

Bond Strength

General Bond Strength (psi)	Good
Tensile Strength (psi)	3.6 (MPa)	Test Method

Material Resistance

High Temperature Resistance (°C)	Heat Resistant, High temperature resistant

Hardness

Crack Resistance	No cracks
Shore A Hardness	43	Test Method
Elongation (%)	340	Test Method
Flexibility	Remain flexible

Other Properties

Extrusion Rate (g/sec)	16,200 270 (g/minute)
Specific Gravity	1.060	Test Method

Business Information

Shelf Life Details	Product should be stored at or below 32°C (90°F) in original, unopened containers.
Shelf Life Temperature (°F)	<90

Best Practices for Dow Dowsil Q3-1566 Heat Resistant Adhesive/ Sealant

*See Terms of Use Below
1. Application
  
  Easy to apply
  
  How to apply: Apply a bead of DOWSIL™ Q3- 1566 Heat Resistant Adhesive/ Sealant (see Handling Precautions) to one of the prepared surfaces, then quickly cover with the other substrate to be bonded.
  
  On exposure to moisture, the freshly applied material will "skinover" in about 5–7 minutes at room temperature and 50% relative humidity. Any tooling should be completed before this skin forms. The surface is easily tooled with a spatula. The sealant will be tackfree in about 18 minutes.
2. Surface Preparation
  
  All surfaces must be clean and dry. Degrease and wash off any contaminants that could impair adhesion. Suitable solvents include isopropyl alcohol, acetone or methyl ethyl ketone.
  
  Unprimed adhesion may be obtained on many substrates such as glass, metals and most common engineering plastics. Substrates to which good adhesion is normally not obtained include PTFE, polyethylene, polypropylene and related materials.
  
  For maximum adhesion, the use of DOWSIL™ 1200 OS Primer is recommended. After solvent cleaning, a thin coat of DOWSIL 1200 OS Primer is applied by dipping, brushing or spraying. Allow primer to dry for 15 to 90 minutes at room temperature and in a relative humidity of 50% or higher.
3. Curing
  
  After skin formation, cure continues inward from the surface. In 24 hours (at room temperature and 50% relative humidity) DOWSIL Q3-1566 Heat Resistant Adhesive/ Sealant will cure to a depth of about 3 mm. Very deep sections, especially when access to atmospheric moisture is restricted, will take longer to cure completely. Cure time is extended at lower humidity levels.
Comparable Materials for Dow Dowsil Q3-1566 Heat Resistant Adhesive/ Sealant

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Spec Engine^® Results
- Dowsil 730 FS Solvent Resistant Sealant(Dow)
  One-component fluorosilicone adhesive/sealant, Cures at room temperature, Non-sag, paste consistency, For assembling and/or repairing of fuel systems and tanks.
- Silcoset 152(CHT)
  A one-part, RTV (Room Temperature Vulcanizing) silicone adhesive sealant. It is one in a range of Acetoxy cure products which are solvent free, cures rapidly at room temperature.
- Dowsil 7092 High Green Strength Adhesive and Sealant(Dow)
  A neutral curing one part silicone sealant excellent adhesion to a wide range of substrates such as glass, metals and plastics.
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