DOWSIL 995 20oz
Formerly: Dow Corning 995
One-Component, Self-Priming, Shelf-Stable, Neutral-Cure, Elastomeric Sealant/Adhesive
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DOWSIL 995 Silicone Structural Sealant is a one-component, self-priming, shelf-stable, neutral-cure, elastomeric adhesive specifically formulated for silicone structural glazing and exhibits excellent unprimed adhesion to most building substrates.
DOWSIL 995 Silicone Structural Sealant is a one-component, self-priming, shelf-stable, neutral-cure, elastomeric adhesive specifically formulated for silicone structural glazing and exhibits excellent unprimed adhesion to most building substrates. This product has superior unprimed adhesion for structural glazing applications for hurricane or impact rated windows and doors. It has a movement capability of +/- 50%.
High ultimate tensile strength sealant ideally suited for structural bonding and protective glazing applications.
Applications
Silicone structural glazing and protective glazing applications
Features
- Odorless, non-corrosive cure system
- Cures to form an extremely tough elastomeric rubber ensuring a durable, flexible, watertight bond
Benefits
- Excellent weatherability and high resistance to ultraviolet radiation, heat and humidity, ozone and temperature extremes
- Excellent mechanical properties
- Successfully tested for use in protective glazing applications
- Excellent unprimed adhesion to wide range of substrates including coated, enameled, and reflective glasses; anodized and polyester coated or painted aluminum profiles including most fluoropolymerbased paints such as Kynar
- Meets global standards for structural glazing (American, China, Europe)
Composition
- One-part, neutral-cure elastomeric sealant
Provides Adhesion to:
- Alodine Aluminum
- Aluminum
- Anodized Aluminum
- Enamelled & Reflective Glass
- Extruded Mill Finish
- Fluorocarbon Coated Aluminum
- Glass
- Heat Strengthened Glass
- Low E Coated Glass
- Metal
- Metal Panels
- Polyester Powder Coated Aluminum/Steel
- Stainless Steel
- Steel
- Vinyl/PVC-U
Properties
| Color | White, Grey, Black |
| Cure Type | Neutral Cure |
| Durometer – Shore A | 40 Shore A |
| Elongation | 525% |
| Flow/Sag (Slump) | 2.54 mm |
| Movement Capability | -50 to 50% |
| Number of Parts | One |
| Peel Strength | 40 ppi |
| Resistance Type | Ozone Resistance, Thermal Resistance, UV Resistance, Water Resistance |
| Room Temperature Cure | 168 to 336 hours |
| Shelf Life | 540 Days |
| Specific Gravity @ 25C | 1.339 |
| Tack-Free Time-50% RH | 65 minutes |
| Tear Strength | 49 ppi |
| Tensile Strength | 350 psi |
| Volatile Organic Content | 30 g/liter |
| Water Resistant | Yes |
| Working Time | 10 to 20 minutes |
Approval/Specifications
DOWSIL 995 Silicone Structural Sealant has been internally tested and is designed to meet or exceed the test requirements of:
- Federal Specification TT-S- 001543A (COM-NBS) Class A for silicone building sealant
- Federal Specification TT-S-00230C (COM-NBS) Class A for one-component building sealant
- ASTM Specification C-920 Type S, Grade NS, Class50, Use NT, G and A
- ASTM C1184 Standard Specification for Structural Silicone Sealant
- Chinese specification GB 16776 for structural glazing
- SNJF VEC
DOWSIL 995 Silicone Structural Sealant exhibits a high level of physical properties and adhesive performance, which are retained even after aging as detailed by EOTA ETAG 002 and prEN 13022 European Standards.