Dow 790 Silicone Building Sealant

Dow 790 Silicone Building Sealant Datasheet
  • Description for Dow 790 Silicone Building Sealant

    Excellent performance in building joints that experience extreme movement; excellent weathering properties and unprimed adhesion.

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    Application Type Bond, Seal
    1 Part or 2 Part 1 Part
    Material Form Toothpaste
    Substrate Aluminum coated with fluoropolymer-based paint, Aluminum: Anodized aluminum, Ceramics, Non-porous, Porous, Glass, Carbon, Plastics, Siliconized polyester paint, Steel, EIFS base and top coat, Wood, Concrete, Mill-finished aluminum, Stainless, Glazed surfaces, Granite, Grout, Mortar, Tile
    Manufacturer Dow
    Chemistry Silicone
    Cure Method Moisture
    Cure Temperature (°C) 25
    Cure Time (min) 10,080 to 20,160
    Viscosity (cPs) Toothpaste
    Color Black, Blue spruce, Adobe tan, Gray: Aluminum, Stone, Adobe tan, Limestone, Adobe tan, Precast white, Bronze, Charcoal, Blue spruce, Limestone, Natural stone, Sandstone, Brick, Sandstone, Rustic brick, Gray, Dusty rose, Rustic brick
    Key Specifications ASTM (American Standard Test Method): C 920: ASTM Specification C 920, Type S, Grade NS, Class 25, Use T, NT, M, G, A and O, CAN/CGSB (Canadian General Standards Board): CAN2-19.13-M82, TT (U.S. Federal Specification): Federal Specification TT-S-001543A, TT (U.S. Federal Specification): Federal Specification TT-S-00230C, UL 263
  • Technical Data

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  • Best Practices

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Cure Temperature Test Methods
Cure Temperature Cure Time Test Method
25°C 50% RH
Cure Time Test Methods
Cure Time Test Method
10,080 to 20,160 min 50% RH
Tack Free Time Test Methods
Tack Free Time Test Method
60 min ASTM C 679, 50% RH
Tensile Strength Test Methods
Tensile Strength Cure Time Cure Temperature Cure Humidity Test Method
100 psi 10,080 min 25°C 50 % ASTM D 412, Ultimate tensile strength, maximum elongation
15 psi 10,080 min 25°C 50 % ASTM C 1135, at 25% extension
20 psi 10,080 min 25°C 50 % ASTM C 1135, at 50% extension
Peel Strength Test Methods
Peel Strength Cure Time Cure Temperature Cure Humidity Test Method
25 (lb/in) 10,080 min 25°C 50 % ASTM C 794
Elongation Test Methods
Elongation Test Method
High Elongation Test Method
1,600 % ASTM D 412, After 7 days at 25°C (77°F) and 50% RH
Shore A Hardness Test Methods
Shore A Hardness Shore Hardness Test Method Hardness Temperature
15 ASTM C 661, After 7 days at 25°C (77°F) and 50% RH 25°C