Dow NS Parking Structure Sealant

Dow NS Parking Structure Sealant Datasheet
  • Description for Dow NS Parking Structure Sealant

    Good weatherability; resilient; long life reliability; unprimed adhesion; seals irregular surfaces; non-slump.

    *See Terms of Use Below

    Application Type Bond, Repair, Seal
    1 Part or 2 Part 1 Part
    Material Form Paste
    Substrate Non-porous, Plastics, Steel, Cement block, Portland cement concrete, Granite, Concrete, Mortar, Paving stone
    Manufacturer Dow
    Chemistry Low-modulus silicone
    Cure Method Moisture
    Cure Temperature (°C) 20 to 25, 25, 25
    Cure Time (min) 20,160 to 30,240, >10,080, >30,240, 20,160 to 30,240
    Viscosity (cPs) Non-sag
    Color Brick, Gray
    High Temperature Resistance (°C) 149
    Low Temperature Resistance (°C) -45
    Key Specifications ASTM (American Standard Test Method): C 920: ASTM C 920, Type S, Grade NS, Class 25, Use T, A, M and O
  • Technical Data for Dow NS Parking Structure Sealant

    Overview
    • Application Type
    • 1 Part or 2 Part
      • 1 Part or 2 Part - 1 Part
    • Material Form
      • Paste
    • Substrate
      • Non-Porous Substrates - Non-porous
      • Concrete - Portland cement concrete
      • Steel
      • Plastic - Plastics
      • Stone - Cement block, Granite, Mortar, Paving stone
      • Other - Irregular surfaces, Masonry
    • Industry
      • Industrial - Loading/material transfer docks
      • Construction - Parking lots, Parking structures, Pedestrian bridges, Plazas, Sidewalks
    • Chemistry
    • Application Method
      • Dispenser - Air-powered gun
      • Brush - Hand
    • Cure Method
      • Moisture / Condensation Cure - Moisture
    • Color
      • Gray
      • Red - Brick
    • Key Specifications
      • ASTM (American Standard Test Method): C 920: Class 25 - ASTM C 920, Type S, Grade NS, Class 25, Use T, A, M and O
    Specifications
    Cure Specs
    Cure Temperature (°C) 20 to 25, 25, 25 Test Method
    Cure Time (min) 20,160 to 30,240, >10,080, >30,240, 20,160 to 30,240 Test Method
    Viscosity (cPs) Non-sag
    Tack Free Time (min) 20 to 60
    Thixotropic Thixotropic
    Bond Strength
    Peel Strength (piw) 20 (ppi) Test Method
    Tensile Strength (psi) 100 Test Method
    Material Resistance
    High Temperature Resistance (°C) 149
    Low Temperature Resistance (°C) -45
    Hardness
    Shore A Hardness 15 Test Method
    Elongation (%) 1,600, >400 Test Method
    Flexibility Flexible, Resilient
    Modulus (psi) Low, 40, 15, 20 Test Method
    Business Information
    Shelf Life Details When stored in the original, unopened container at or below 32°C (90°F) Dow Corning NS Parking Structure Sealant has a shelf life of 12 months from date of manufacture. Refer to product packaging for “Use By Date.” Keep containers tightly closed.
    Shelf Life Type from date of manufacture
    Shelf Life (mon) 12
    Not Good For
    Don't Use For transportation for highway pavements, green or partially vulcanized rubber gaskets
    Don't Use With asphalt-impregnated fiberboard, oil-based caulks
  • Best Practices for Dow NS Parking Structure Sealant

    *See Terms of Use Below

    1. Surface Preparation

      surface must be clean, dry and frost-free at the time of sealant application.

    2. Application

      Dow Corning NS Parking Structure Sealant is not a self-leveling sealant. It must be tooled to ensure good contact and adhesion as well as to control sealant depth and provide a recessed surface. Several devices can be used for tooling. Dow Corning NS Parking Structure Sealant is part of a system that must include the proper backer rod and proper installation procedures. The backer rod must be expanded, closed cell polyethylene foam. Where irregularly shaped joints exist, backer rod that is open-cell with an impervious skin is acceptable to ensure a tight fit against the irregular joint wall faces. Several other back-up materials (paper, fibrous ropes and open-cell foams) are available, but have proven to be unacceptable. There are several manufacturers of closed-cell polyethylene foam and any may be used. When using Dow Corning NS Parking Structure Sealant with other Dow Corning products carrying the Parking Structure Sealant name, please note that these materials are all compatible with one another in either the cured or uncured state, may come in contact with one another, and will bond to one another provided no debris or other contaminants interfere with the bond.

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    *See Terms of Use Below

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Cure Temperature Test Methods
Cure Temperature Cure Time Test Method
20 to 25°C
25°C As Cured – After 7 days at 25°C (77°F) and 50 percent RH
25°C As Cured – After 21 days at 25°C (77°F) and 50 percent RH
Cure Time Test Methods
Cure Time Test Method
20,160 to 30,240 min
>10,080 min As Cured – After 7 days at 25°C (77°F) and 50 percent RH
>30,240 min As Cured – After 21 days at 25°C (77°F) and 50 percent RH
20,160 to 30,240 min
Tensile Strength Test Methods
Tensile Strength Cure Time Cure Temperature Cure Humidity Test Method
100 psi 10,080 min 25°C 50 (%) RH ASTM D 412
Peel Strength Test Methods
Peel Strength Cure Time Cure Temperature Cure Humidity Substrate Test Method
20 (ppi) 10,080 min 25°C 50 (%) RH Concrete ASTM C 794
Elongation Test Methods
Elongation Test Method
1,600 % ASTM D 412, After 7 days at 25°C (77°F) and 50 percent RH
>400 % ASTM C 1135, After 21 days at 25°C (77°F) and 50 percent RH, Ultimate Elongation
Modulus Test Methods
Modulus Test Method
Low Modulus Test Method
40 psi ASTM D 412, at 150% elongation, After 7 days at 25°C (77°F) and 50 percent RH
15 psi ASTM C 1135, at 25% elongation, After 21 days at 25°C (77°F) and 50 percent RH
20 psi ASTM C 1135, at 50% elongation, After 21 days at 25°C (77°F) and 50 percent 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 percent RH 25°C