Dow CY 51-019

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Description for Dow CY 51-019

Noncorrosive; good flow; good adhesion.

Note: This material has been discontinued. Please view the Comparable Materials tab or call us at (262) 293-7970 for additional help.

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Application Type	Bond, Seal, Gasket
1 Part or 2 Part	2-Part
Material Form	Liquid, Silicone elastomer
Substrate	Ceramics, Glass, Reactive metals, Plastics, Resins
Industry	Solar cell, Solar cell
Manufacturer	Dow
Chemistry	Silicone elastomer
Cure Method	RTV, Part A/Part B
Cure Temperature (°C)	Faster or lower, 20 to 25, 20 to 25
Cure Time (min)	Rapid
Viscosity (cPs)	11,000
Color	White
High Temperature Resistance (°C)	200
Low Temperature Resistance (°C)	-45, -55
Volume Resistivity (O)	4E+12 (ohms/cm)

Best Practices for Dow CY 51-019

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Technical Data for Dow CY 51-019

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Overview

Application Type
- Gasketing - Gasket
- Adhesive - Bond
- Sealant - Seal
1 Part or 2 Part
- 2-Part
Material Form
- Elastomer - Silicone elastomer
- Liquid
Substrate
- Ceramic - Ceramics
- Glass
- Metal - Reactive metals
- Plastic - Plastics, Resins
- Other - Laminates
Industry
- Electronics - Solar cell
- Solar Energy - Solar cell
- Industrial - Housings, Lid
Chemistry
- Silicone - Silicone elastomer
Cure Method
- 2-Part Cure - Part A/Part B
- RTV (Room Temperature Vulcanization) - RTV
Color
- White

Specifications

Cure Specs

Cure Temperature (°C)	Faster or lower, 20 to 25, 20 to 25
Cure Time (min)	Rapid
Viscosity (cPs)	11,000
Tack Free Time (min)	Fast	Test Method
Work / Pot Time (min)	240	Test Method
Thixotropic	Good
Mix Ratio	10:1 (by volume)

Bond Strength

Shear Strength (psi)	120	Test Method
Tensile Strength (psi)	160

Material 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	0.00400	Test Method
Dielectric Strength (V/mil)	Good, 19,685,039, Durable
Dielectric Constant	3.10	Test Method
Volume Resistivity (O)	4E+12 (ohms/cm)

Hardness

Shore A Hardness	34
Elongation (%)	2
Flexibility	Flexible

Other Properties

Specific Gravity	1.270

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 CY 51-019

*See Terms of Use Below
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 CY 51-019

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Spec Engine^® Results
- AS2500(CHT)
  This is a novel (2 part ) twin pack system, which consists of a 1- Part RTV Industrial Adhesive Silicone Sealant and an accelerator in a 10:1.
- EA-3500(Dow)
  Two-part, room temperature cure adhesive. Good adhesion to various substrates (Al, Glass, PBT).
- Dowsil EA-1236 Adhesive(Dow)
  Two-part, room temperature cure adhesive. It is suitable for sealing lids and housings, parts fixing on circuit board.
- Compare All