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Key Resin Key #803 Acrylic Sealer

Key #803 Acrylic Sealer is a clear acrylic emulsion formulated to create a clear, non-yellowing, protective coating. KEY #803 provides a tough, UV and abrasion resistant film that protects surfaces from moisture penetration, staining, dirt, dust, wear, and provides a surface that is easy to clean and maintain. KEY #803 is an excellent choice for interior applications. KEY #803 is designed as an effective terrazzo sealer thereby replacing solvent-based acrylic sealers. KEY #803 can be used to seal concrete, masonry, brick, Saltillo tiles, or any cementitious substrate. While it is a clear-drying formulation, it will tend to impart a rich darkening, or “wet look” quality to many substrates, especially those of a dark or tinted nature.

Product Type: Sealer, Waterborne Coating

Compatible Substrates & Surfaces: Brick, Concrete

Features: Cleanable, Cost Effective, Excellent Dirt Pick-up Resistance, Excellent Stain Resistance, Excellent Toughness, Good Abrasion Resistance, Good Non-Yellowing Properties, Mar Resistant, Rapid Drying Properties, Strong Dust Traceability, UV Resistant, Wear Resistant

Technical Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

Features & Benefits

Key Advantages
  • UV resistant
  • Waterborne
  • Excellent clarity
  • Low maintenance finish
  • Fast dry time
  • Excellent abrasion and mar resistance
  • Seals substrate from moisture penetration

Applications & Uses

Compatible Substrates & Surfaces
Key Considerations
  • Substrate temperature must be a minimum of 50ºF
  • Substrate must be free of dirt, waxes, curing agents,and other foreign materials
  • For indoor use only, do not use in exterior areasexposed to rain or ponding water
Application

Surface Preparation

Surface Preparation is the most critical portion to any successful resinous flooring system application. All substrates must be properly prepared as outlined in Key Resin Technical Bulletin #1. Work must be performed by trained or experienced contractors or maintenance personnel.

Mixing Instructions

KEY #803 can be easily applied. Apply with low pressure pump at 200-600 ft2 per gallon. Can also be brushed, rolled, or spread using a lamb’s wool/microfiber applicator. Coverage will vary due to ambient temperature, surfacetemperature, surface porosity, and/or application methods. Do not apply if surface temperature is below 50ºF. Avoid pooling and application to exterior areas that are subject to rain or ponding water. A single coat will seal the substrate to minimize staining while producing a “patina” like finish. Subsequent coats will create a surface film with a higher sheen. Care should be taken to minimize the entrapment of air caused by overrolling. Two or more coats are recommended for sealing applications.

Clean Up

Clean skin with soap and water. Tools and equipment should be cleaned with xylene or lacquer thinner.

Maintenance

After completing the application of KEY #803, the installer should provide the owner with maintenance instructions. KEY #803 is easily cleaned with neutral soaps or detergents.

Properties

Typical Properties
ValueUnitsTest Method / Conditions
Cure Time Dry to Touch (75°F)15 - 30 minutes--
Cure Time Recoat (75ºF)*1.0hour-
Cure Time Light Foot Traffic Service (75°F)24.0hours-
Cure Time Full Cure & Maximum Resistance (75°F)5 Days--
Mixing RatioSingle Component--
Solids Content (by Volume)20.0%-
Volatile Organic Content (VOC)90.0g/lEPA Method 24, Compliant to low VOC Rule 1113 in all 50 states
Flash PointNone-Setaflash Test
pH8.5 – 8.9--
Weight (Mixed)8.5--
ThinningNo thinning is required. Apply at packaged consistency.--
Note

*Good air movement and humidity control are necessary for proper drying of waterborne coatings.

Packaging & Availability

Availability

Key Resin materials are available throughout the United States, Canada, and a number of other countries.