Application Type Bond, Seal 1 Part or 2 Part 1 Part Material Form Paste Substrate Painted aluminum, Nonporous, Porous, EIFS, Concrete, Precast Industry 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
Technical Data for Dow Contractors Weatherproofing Sealant
1 Part or 2 Part
- 1 Part or 2 Part - 1 Part
- Dispenser - Gun
- Gray: Aluminum
- Other - 11 standard stocked colors
- 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
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
General Bond Strength (psi) Balanced Peel Strength (piw) 20 to 28 (lb/in) Test Method Tensile Strength (psi) 180 Test Method
Environmental Resistance Unique High Temperature Resistance (°C) 121 Low Temperature Resistance (°C) -40
Shore A Hardness 25, 20 to 30 Test Method Elongation (%) 6 Test Method Modulus (psi) Medium
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
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.
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.
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.
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Cure Temperature Test Methods
|Cure Temperature||Cure Time Test Method|
|25°C||Cure rate at 77°F and 50% RH, Initial skinning|
|25°C||Cure rate at 77°F and 50% RH, Through cure (3/8" [9 mm] depth)|
Cure Time Test Methods
|Cure Time||Test Method|
|180 to 360 min||Cure rate at 77°F and 50% RH, Initial skinning|
|10,080 to 20,160 min||Cure rate at 77°F and 50% RH, Through cure (3/8" [9 mm] depth)|
Tensile Strength Test Methods
|Tensile Strength||Test Method|
|180 psi||ASTM D 412|
Peel Strength Test Methods
|Peel Strength||Test Method|
|20 to 28 (lb/in)||ASTM C 794|
Elongation Test Methods
|6 %||ASTM D 412, Ultimate|
Shore A Hardness Test Methods
|Shore A Hardness||Shore Hardness Test Method|
|25||Hardness/Durometer Test Method|
|20 to 30||ASTM C 661, at Standard Conditions|