Dow 1890 Protective Coating

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Description for Dow 1890 Protective Coating

One-part, protective silicone rubber coating for motors and electrical equipment.

Application Type	Coat, Seal
1 Part or 2 Part	1-Part
Material Form	Thick Liquid
Substrate	Glass, Painted metal, Wood, Unpainted metal
Industry	Electrical equipment, Threaded studs, Transformers, Connectors, Smart Home Devices, Food processing plants, Quarries, Power Tools, Motors, Mines, Fan motor for a farm tractor, Insulated motor windings
Manufacturer	Dow
Chemistry	Silicone rubber
Cure Method	Moisture
Cure Temperature (°C)	20 to 25, 25
Cure Time (min)	10,080
Viscosity (cPs)	40,000
Color	Gray
High Temperature Resistance (°C)	177, 204
Low Temperature Resistance (°C)	-59
Volume Resistivity (O)	2e15 (ohms/cm)
Key Specifications	FDA (U.S. Food & Drug Administration) and/or CFIA (Canadian Food Inspection Agency): FDA 21 CFR177.2600

Best Practices for Dow 1890 Protective Coating

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Technical Data for Dow 1890 Protective Coating

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Overview

Application Type
- Coating - Coat
- Sealant - Seal
1 Part or 2 Part
- 1-Part
Material Form
- Liquid - Thick Liquid
Substrate
- Glass
- Metal - Painted metal, Unpainted metal
- Wood
Industry
- Mechanical Fastening Parts - Threaded studs
- Food & Beverage - Food processing plants
- Other Transportation - Bus bars
- Smart Home Devices
- Electronics - Electrical equipment
- Transformers
- Connectors
- Industrial - Dye houses, Fertilizer plants, Formed-steel split housing, Insulator pins, Splices, Taconite mills, Tanneries
- Mines and Quarries - Quarries, Mines
- Power Tools
- Motors - Insulated motor windings, Fan motor for a farm tractor
- Construction - Cement plants
- Packaging - Bottling plants, Packing, Paper mills
- Drug/Pharmaceutical - Dairies
- Furniture / Wood-Working - Wooden pole tops
Chemistry
- Silicone - Silicone rubber
Application Method
- Brush - Stiff-bristle nylon brush
- Spray
Cure Method
- Moisture / Condensation Cure - Moisture
Color
- Gray
Key Specifications
- FDA (U.S. Food & Drug Administration) and/or CFIA (Canadian Food Inspection Agency) : 177.2600 - FDA 21 CFR177.2600

Specifications

Cure Specs

Cure Temperature (°C)	20 to 25, 25	Test Method
Cure Time (min)	10,080	Test Method
Viscosity (cPs)	40,000
Tack Free Time (min)	25
Work / Pot Time (min)	15

Material Resistance

UV Resistance	UV resistance
Environmental Resistance	Environmental resistance
High Temperature Resistance (°C)	177, 204
Low Temperature Resistance (°C)	-59
Moisture/Humidity Resistance	Excellent

Conductivity

Dissipation Factor	0.00007, 0.00018	Test Method
Dielectric Constant	2.50, 2.50	Test Method
Volume Resistivity (O)	2e15 (ohms/cm)	Test Method

Hardness

Shore A Hardness	21, Good
Flexibility	Flexible

Other Properties

Flash Point (°F)	50.0

Business Information

Shelf Life Details	When stored at 90°F (32°C), Dow Corning 1890 Protective Coating has a shelf life of 12 months from date of manufacture. Refer to product packaging for “Use By” date.
Shelf Life Type	From date of manufacture
Shelf Life (mon)	12

Not Good For

Don't Use With	Concrete, Brick, Mortar, Other masonry surfaces, Paints, Impregnated woods, Oil-based caulks that bleed oils, Polyethylene, Polypropylene, Methylmethacrylate, Copper, Brass, Zinc, Carbon steel, Galvanized iron, Magnesium

Best Practices for Dow 1890 Protective Coating

*See Terms of Use Below
1. Surface Preparation
  
  Clean and dry all surfaces to be coated before applying this coating.
2. Application
  
  Dow Corning 1890 Protective Coating can be applied as received by brushing on with a stiff-bristle nylon brush. If spraying is preferred, this dispersion can be thinned with VM&P naphtha to provide the optimum viscosity required for spraying equipment. Only normal brushing or spraying techniques are needed.
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