Dow Contractors Weatherproofing Sealant

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Description for Dow Contractors Weatherproofing Sealant

Primerless on most common nonporous building substrates; easy gunnability in all weather conditions.

Application Type	Bond, Seal
1 Part or 2 Part	1 Part
Material Form	Paste
Substrate	Painted aluminum, Nonporous, Porous, EIFS, Concrete, Precast
Industry	Doors, Windows
Manufacturer	Dow
Chemistry	Silicone
Cure Method	Moisture
Cure Temperature (°C)	25, 25
Cure Time (min)	180 to 360, 10,080 to 20,160
Color	Gray: Aluminum, 11 standard stocked colors
High Temperature Resistance (°C)	121
Low Temperature Resistance (°C)	-40
Key Specifications	ASTM (American Standard Test Method): C 920: ASTM C 920, Type S, Grade NS, Class 25, Use NT, M, A and O (granite), TT (U.S. Federal Specification): S-00230C: TT-S-01543A; TT-S-00230C, Type II, Class A ±25% movement capability, TT (U.S. Federal Specification): TT-S-01543A; TT-S-00230C, Type II, Class A ±25% movement capability

Best Practices for Dow Contractors Weatherproofing Sealant

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Technical Data for Dow Contractors Weatherproofing Sealant

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Overview

Application Type
- Adhesive - Bond
- Sealant - Seal
1 Part or 2 Part
- 1 Part or 2 Part - 1 Part
Material Form
- Paste
Substrate
- Non-Porous Substrates - Nonporous
- Porous Substrates - Porous
- Concrete
- Aluminum - Painted aluminum
- Stone - EIFS, Precast
- Other - Masonry
Industry
- Industrial - Concrete panel joints, Curtainwall joints, Expansion and control joints, Tilt-up panel joints
- Construction - Perimeter caulking, Bedding of frames, Bedding of panels, Bedding of mullions, panels and frames), Radon mitigation, EIFS, Panels
- Construction Door - Doors
- Construction Window - Windows
Chemistry
- Silicone
Application Method
- Dispenser - Gun
Cure Method
- Moisture / Condensation Cure - Moisture
Color
- Gray: Aluminum
- Other - 11 standard stocked colors
Key Specifications
- ASTM (American Standard Test Method): C 920: Class 25 - ASTM C 920, Type S, Grade NS, Class 25, Use NT, M, A and O (granite)
- TT (U.S. Federal Specification): S-00230C: Class A - TT-S-01543A; TT-S-00230C, Type II, Class A ±25% movement capability
- TT (U.S. Federal Specification): S-001543A - TT-S-01543A; TT-S-00230C, Type II, Class A ±25% movement capability

Specifications

Cure Specs

Application Temperature (°F)	-20 to 120
Cure Temperature (°C)	25, 25	Test Method
Cure Time (min)	180 to 360, 10,080 to 20,160	Test Method

Bond Strength

General Bond Strength (psi)	Balanced
Peel Strength (piw)	20 to 28 (lb/in)	Test Method
Tensile Strength (psi)	180	Test Method

Material Resistance

Environmental Resistance	Unique
High Temperature Resistance (°C)	121
Low Temperature Resistance (°C)	-40

Hardness

Shore A Hardness	25, 20 to 30	Test Method
Elongation (%)	6	Test Method
Modulus (psi)	Medium

Business Information

Shelf Life Details	Dow Corning Contractors Weatherproofing Sealant 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 For	Silicone structural glazing, Application in confined areas without proper ventilation, Joints under constant water submersion

Best Practices for Dow Contractors Weatherproofing Sealant

*See Terms of Use Below
1. Surface Preparation
  
  The joint interface must be clean, dry and free from oils, loose mortar, laitance, form release agents, waterproofings, dampproofings and other contaminants. A thorough wire brushing, grinding, sandblasting or solvent cleaning may be required to expose clean, sound, virgin surface.
2. Application
  
  Install backer material or joint filler, setting blocks, spacer shims and tapes as specified. Apply sealant in a continuous operation, using a positive pressure adequate to properly fill and seal the joint.
3. Clean-Up
  
  Immediately remove all excess sealant and smears adjacent to the joint with Xylol or Toluol as work progresses.
  
  Follow solvent manufacturer’s recommended safe handling instructions and applicable federal, state and local regulations.
Comparable Materials for Dow Contractors Weatherproofing Sealant

*See Terms of Use Below

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