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DOWSIL General Purpose Silicone Sealant is a one-part, acetoxy cure silicone sealant for general purpose applications. It provides a flexible bond and will not harden or crack. DOWSIL General Purpose Silicone Sealant is a high-performance sealant, with ±25% movement capability when properly applied. It offers long term durability in a range of general sealing or glazing applications on glass, aluminum, painted surfaces, ceramics, fiberglass, and non-oily wood. Clear and white options meet the requirements of FDA Regulation 21CFR 177.2600.
Features & Benefits:
Cures to 100% silicone rubber
Resistant to sunlight and weather extremes
Fast cure, high strength
Clear and white formulations meet the requirements of FDA Regulation 21 CFR 177.2600
Remains flexible; will not become brittle, crack, shrink or chalk
Bonds to many common substrates
Supplied is removable, reusable, resealable nozzle that saves time and sealant
One-part, acetoxy-cure, RTV silicone
Acetoxy Cure - Yes
Appearance - Opaque, Translucent
Application Temperature Range : -29 to 50°C
Chemistry - Acetoxy
Color - Aluminum, Black, Bronze, Clear, Grey, White
Cure System : 1-Part Cure
Durometer - Shore A : 27 Shore A
Elongation - 600 %
Flow - NonSag
Movement - Low
Movement Capability - 25 %
Resistance Type - Thermal Resistance, UV Resistance, Water Resistance
Room Temperature Cure - Hours : 24 Hours
Service Temperature High - 176°C
Service Temperature Low : -40°C
Substrate : Non-porous
Tensile Strength - 350 psi
Volatile Organic Content - 32 g/liter
Water Resistant - Yes
Where Used - Factory, Job Site
Working Time - 5 to 10 Minutes
Tooling Time - 5-10 minutes
Tack-Free Time - 15-20 minutes
Complete Set-Up Time,1 1/8"""" - 24 Hours
Cure System - Acetoxy
Application Temperature Range : -20 to 122 (-29 to 50) °F(°C)
VOC Content - 32 g/L
As Cured - After 7 days:
Durometer Hardness, Shore A - 27 Points
Tensile Strength - 350 psi
Elongation - 600 %
Temperature Range, continuous : -40 to 350 (-40 to 176) °F(°C)
Movement Capability - ±25 %
As a bedding material, formed-in-place gasket, formed-in-place bumper
Adhering trim, name plates, signs
Sealing around sinks, faucets, showers, tubs, toilets and vents
For most marine applications: sealing between hull and deck, most boat decks, windows, port lights, windshields and hatches
How to Use:
Refer to product packaging for use-by date.
Temperature - Apply sealant at temperatures between -20 and 122°F (-29 and 50°C) for best results.
Prepare surface - Cut out and remove all old caulk for repair applications.
Clean, Two-Step - First, apply solvent to a lint-free cloth and vigorously wipe bonding surfaces to remove dirt and residues. Next, 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.) Always wear gloves and follow safety precautions and directions on solvent container. DO NOT USE gasoline or kerosene.
Install - Install back-up spacing material for better filling, especially if the width exceeds 1/2"" to maximize bonding results. Open-cell polyethylene foam backer rod can be used.
Mask - Apply masking tape to areas adjacent to the joint to ensure straight bead lines and easy cleanup. Remove masking tape immediately after the bead is completed and before a skin forms.
Open cartridge - Cut snub nose above threads, reattach and cut nozzle to desired size. Insert into a caulking gun.
Apply - Extrude sealant with a smooth, steady motion, and ensure complete fill of joint cavity before proceeding.
Tool - Tool the sealant immediately after application and before a skin forms. Remove masking immediately after tooling.
Replace cartridge cap - See ""Usable Life and Storage"" instructions.
Cleanup should start immediately after sealant has been applied/ tooled and masking tape has been removed.
While wearing solvent-resistant gloves, wipe off excess sealant from surfaces and tools with a solvent- moistened cloth within 10 minutes of application.
If excess sealant is completely cured, carefully cut or scrape away.
Avoid contact of uncured sealant with skin and clothing. If contact does occur, wipe with clean rags and wash with water.
Before handling, read product and safety data sheets and container labels for safe use, physical and health hazard information.
Not for structural glazing
Not suited for prolonged submersion in water or below-grade applications
May not adhere to oily woods or be compatible with substrates made of methylmethacrylate, polycarbonate, polypropylene, polyethylene and polytetrafluoroethylene
Not suitable for surfaces that might bleed oils, plasticizers or solvents, or porous surfaces such as cement-like materials, stone or surfaces prone to attack by weak acids
May not cure properly if used in spaces confined from atmospheric moisture
May cause corrosion on some brass, copper, zinc or zinc alloy-containing fixtures (galvanized)
Not for use where abrasion and physical abuse are encountered
This product is neither tested nor represented as suitable for medical or pharmaceutical uses.
Usable Life And Storage:
Store below 90°F (32°C) in a dry place. DOWSIL General Purpose Silicone Sealant has a usable life of 30 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.
1 Cartridge of General Purpose Silicone Sealant (280 ml)