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Description for Dow Dowsil SE 9185 Clear or White Adhesive
A one-part moisture cure adhesives, translucent or white, non-flowing adhesive, fast tack free with controlled volatility, Sealing PCB System assembly equipment and modulesBrand Dowsil Application Type Bond, Seal, Gaskets 1 Part or 2 Part 1-Part Material Form Pre-Cure: Paste, Post-Cure: Elastomer Substrate Ceramics, Glass, Many reactive metals, Selected plastics, Selected resins Industry CRT module, Light Emitting Diodes (LEDs), Sealing PCB system assembly equipment , Smart Meters, Advanced driver-assistance systems (ADAS), E-Mobility Solutions, Smart Home Devices, Electronic equipment, Fixing parts on circuit board, LCD module, Sealing modules, PDP module Manufacturer Dow Chemistry Polydimethylsiloxane Cure Method RTV, Moisture, Room temperature Cure Temperature (°C) 20 to 25 Room temperature Cure Time (min) 1,440 to 4,320 Viscosity (cPs) Non-flowing Color Clear, White, Translucent High Temperature Resistance (°C) 200 Low Temperature Resistance (°C) -45, -55 Volume Resistivity (O) 2.0 E+16 (ohm*cm) Durability Durable -
Technical Data for Dow Dowsil SE 9185 Clear or White Adhesive
Overview
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1 Part or 2 Part
- 1-Part
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Material Form
- Elastomer - Post-Cure: Elastomer
- Paste - Pre-Cure: Paste
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Industry
- LED (Light-Emitting Diodes) - Light Emitting Diodes (LEDs)
- Smart Meters
- Smart Home Devices
- Advanced driver-assistance systems (ADAS)
- E-Mobility Solutions
- Electronics - CRT module, Electronic equipment, LCD module, Sealing modules, PDP module
- Printed Circuit Board (PCB) - Sealing PCB system assembly equipment , Fixing parts on circuit board
- Power Supplies
- Industrial - Housings
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Chemistry
- Silicone - Polydimethylsiloxane
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Application Method
- Dispenser - Automated or manual needle dispense systems
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Cure Method
- Room Temperature / Air Dry - Room temperature
- Moisture / Condensation Cure - Moisture
- RTV (Room Temperature Vulcanization) - RTV
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Color
- Translucent
- Clear / Transparent - Clear
- White
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Brand
- Dowsil
Specifications
Cure Specs
Cure Temperature (°C) 20 to 25 Room temperature Cure Time (min) 1,440 to 4,320 Viscosity (cPs) Non-flowing Tack Free Time (min) Fast, 8 Test Method Work / Pot Time (min) <60 Bond Strength
Shear Strength (psi) 83 Test Method Tensile Strength (psi) 435 Material Resistance
High Temperature Resistance (°C) 200 Low Temperature Resistance (°C) -45, -55 Conductivity
Dissipation Factor 0.00070 Test Method Dielectric Strength (V/mil) Good, 550 Dielectric Constant 2.80 Test Method Volume Resistivity (O) 2.0 E+16 (ohm*cm) Hardness
Durability Durable Shore A Hardness 31 Test Method Elongation (%) 515 Flexibility Flexible Other Properties
Specific Gravity 1.050 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). Shelf Life Type From date of manufacture Shelf Life (mon) 15 Not Good For
Don't Use With Plastic substrates that are highly plasticized, Rubber substrates that are highly plasticized, Non-reactive metal substrates, Non-reactive plastic surfaces, Teflon®, Polyethylene, Polypropylene -
Best Practices for Dow Dowsil SE 9185 Clear or White Adhesive
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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.
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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.
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Tack Free Time Test Methods
Tack Free Time | Tack Free Temperature |
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Fast | |
8 min | 25°C |
Shear Strength Test Methods
Shear Strength | Type | Substrate |
---|---|---|
83 psi | Lap shear | Glass |
Dielectric Constant Test Methods
Dielectric Constant | Test Method |
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2.80 | 1MHz |
Dissipation Factor Test Methods
Dissipation Factor | Test Method |
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0.00070 | 1MHz |
Shore A Hardness Test Methods
Shore A Hardness | Shore Hardness Test Method |
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31 | Durometer |
Specific Gravity Test Methods
Specific Gravity | Test Method |
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1.050 | Cured |

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