Dow Paintable Silicone Sealant

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Description for Dow Paintable Silicone Sealant

Bonds to masonry; low-odor cure; weather resistant; remains flexible.

Application Type	Bond, Seal
1 Part or 2 Part	1 Part
Material Form	Paste
Substrate	Siding materials
Industry	Doors, Cables, Around window frames
Manufacturer	Dow
Chemistry	Silicone, Water-based
Cure Method	Moisture
Cure Time (min)	1,440 to 10,080
Color	White
High Temperature Resistance (°C)	93
Low Temperature Resistance (°C)	-40

Best Practices for Dow Paintable Silicone Sealant

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Technical Data for Dow Paintable Silicone 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
- Stone - Siding materials
- Other - Masonry, Painted surfaces
Industry
- Industrial - Around pipes, Eaves troughs, Gutters, Roof penetrations, Tubs, Vents
- Cable - Cables
- Construction - Plumbing fixtures, Showers, Sinks
- Construction Door - Doors
- Construction Window - Around window frames
Chemistry
- Silicone
- Water-based
Application Method
- Dispenser - Nozzle
Cure Method
- Moisture / Condensation Cure - Moisture
Color
- White

Specifications

Cure Specs

Application Temperature (°F)	36 to 90
Cure Time (min)	1,440 to 10,080
Set Time (min)	1,440	Test Method
Tack Free Time (min)	45 to 60	Test Method

Bond Strength

Tensile Strength (psi)	150	Test Method

Material Resistance

Environmental Resistance	Environmental resistance, Weather resistance
High Temperature Resistance (°C)	93
Low Temperature Resistance (°C)	-40

Hardness

Shore A Hardness	25, 20 to 25	Test Method
Elongation (%)	9	Test Method
Flexibility	Flexible

Business Information

Shelf Life Details	Do not freeze. Store between 35 and 90°F (2 and 32°C). Dow Corning Paintable Silicone Sealant has a usable life of 22 months from date of manufacture. Refer to product packaging for use-by date. To store short term, replace cap., To store long term, unscrew nozzle, screw cap in cartridge and store nozzle in cap.
Shelf Life Temperature (°F)	36 to 90
Shelf Life Type	From date of manufacture
Shelf Life (mon)	22

Not Good For

Don't Use For	Structural glazing, For prolonged submersion in water or below-grade applications.
Don't Use With	oily woods or some plastics

Best Practices for Dow Paintable Silicone Sealant

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1. Surface Preparation
  
  Cut out and remove all old caulk for repair applications.
2. Application
  
  For best results, apply sealant at temperatures between 35 and 90°F (2 and 32°C) and when no rain or high humidity is expected within 24 hours of application.
  
  Install back-up spacing material for better filling, especially if width exceeds 1/2" to maximize Dow Corning Paintable Silicone Sealant is available from: bonding results. Open-cell polyethylene foam backer rod can be used.
  
  Cut snub nose above threads, reattach and cut nozzle to desired size. Insert into a caulking gun.
  
  Extrude sealant with a smooth, steady motion, and ensure complete fill of joint cavity before proceeding.
3. Clean-Up
  
  First, apply solvent to a lint-free cloth and vigorously wipe bonding surfaces to remove dirt and residue. Then, use a dry wipe to remove remaining solvent and residue for optimum cleaning. Repeat if necessary. Surfaces must be clean, dry, oil- and frost-free for best results. (Recommended solvents include isopropyl alcohol, toluene, xylene, naphtha or similar solvent.)
  
  Remove uncured sealant with a water-dampened cloth.
Comparable Materials for Dow Paintable Silicone Sealant

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Spec Engine^® Results
- Flex-521 UV(Sika)
  A multi-purpose non-sag, elastic one-part sealant based on silane-terminated polymer technology, which cures on exposure to atmospheric moisture to form a durable elastomer. Resistant to UV radiation. Very low VOC/solvent free, silicone and PVC-free, Isocyanate-free. High electrical resistance.
- 08019(3M)
  A mildew resistant, non-sagging, moisture curing silicone rubber sealant for above the waterline applications which remains flexible with excellent resistance to the marine environment. Adheres to bare and painted metal, glass, fiberglass, non-oily woods and many plastics and abraded rubber.
- Elastosil 4500(Wacker)
  Wacker Elastosil 4500 is a 1 Part Atmospheric moisture Silicone Paste used to Seal Ceramic tiles, Glass and Vitrified surfaces
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Closest Results from this Manufacturer
- 791 Silicone WeatherpRoofing Sealant(Dow)
  Excellent weatherability, unprimed adhesion, rheology, low string upon gunning; meets global standards; compatible with all Dow Corning sealants.
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