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Dowsil 993 Two Part Structural Glazing Silicone 545g + 2x30 g kit
€ 1082.06 77.29 incl. VAT (64.95 excl. VAT), per piece *
Availability: Available
Packaging unit: 14 pieces
Manufacturer: Dow Chemical
Country of origin: US/0400
Customs tariff number: 32141010
Weight per piece: 700 g
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DOWSIL™ 993 (formerly Dow Corning DC 993) is a two-part, neutral-curing silicone sealant for façade construction (structural glazing). It is mixed at a 10:1 ratio.
- Pack size: Set with 545 g cartridge (base) and 2 x 30 g tubes (hardener)
- Also available as: 675 ml repair-kit dual cartridge
Applications
- Structural glazing (SNJF VEC + VI-VEC), bonding of glass, metal and façade components
- Impact-resistant window systems (new build & retrofit)
Features
- Neutral (alkoxy), low-odour and non-corrosive
- High adhesion to coated/enamelled/reflective mirrors, anodised & painted aluminium, stainless steel
- Consistent viscosity of both parts, no pre-heating required
- Service temperature: −50 °C to +150 °C
- Colours via curing agent: black, clear and various greys
Technical Data
| Uncured (supply condition / 25 °C, 50 % RH) – 675 ml Repair Kit | |
|---|---|
| Colour / consistency (Base / catalyst) | viscous white paste / viscous black paste |
| Specific gravity (Base / black catalyst) | 1.32 / 1.05 |
| Viscosity (Base 100 s⁻¹ / catalyst 20 s⁻¹) | 150,000 mPa·s / 25,000 mPa·s |
| Flash point (curing agent, closed cup) | 28 °C |
| Mix ratio (Wt./Vol.) | 10:1 / 7.8:1 | permissible 11:1…9:1 (by weight) |
| Mixed (25 °C / 50 % RH) | |
| Colour / consistency | black, non-slump paste |
| Density | ≈ 1.30 |
| Viscosity (100 s⁻¹) | ≈ 40,000 mPa·s |
| Working time / skin-over time | ≈ 10–30 min / ≈ 80–100 min |
| Cured (7 days / 25 °C / 50 % RH) | |
| Hardness (Shore A) | ≈ 40 |
| Tensile strength / elongation at break | ≈ 0.95 MPa / ≈ 130 % |
| Tear strength | ≈ 6.0 kN/m |
| Service temperature | −50 °C to +150 °C |
| Design stresses | dynamic 140,000 Pa · static 11,000–15,000 Pa |
Note: Data apply to the Repair Kit only (Base: white / catalyst: black). Values are typical.
Processing
- Mix ratio 10:1 (by weight) or 7.8:1 (by volume); permissible 11:1 to 9:1 (by weight)
- Airless mixing in 2-part dispensing systems; use approved 2-part hand cartridges only
- Usually primerless; project-specific adhesion tests recommended
Storage & Shelf Life
- Base & catalyst: 14 months at ≤ 30 °C
- Repair-kit cartridge: 9 months from filling date
Hazard Information (CLP)

Hazard Statements (H-statements)
- H226: Flammable liquid and vapor. (Catalyst Black)
- H315: Causes skin irritation. (Catalyst Black)
- H317: May cause an allergic skin reaction. (Catalyst Black)
- H318: Causes serious eye damage. (Catalyst Black)
- H373: May cause damage to organs (bladder) through prolonged or repeated exposure if swallowed. (Catalyst Black)
Additional Labeling (EUH-statements)
- EUH210: Safety data sheet available on request. (Base White)
Precautionary Statements (P-statements)
Prevention:
- P210: Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. (Catalyst Black)
- P260: Do not breathe mist or vapor. (Catalyst Black)
- P264: Wash skin thoroughly after handling. (Catalyst Black)
- P280: Wear protective gloves/protective clothing/eye protection/face protection. (Catalyst Black)
- P271: Use only outdoors or in a well-ventilated area. (Base White)
Response:
- P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing. (Catalyst Black)
- P310: Immediately call a POISON CENTER or doctor. (Catalyst Black)
- P337 + P313: If eye irritation persists: Get medical advice/attention. (Catalyst Black)
- P370 + P378: In case of fire: Use water spray, alcohol-resistant foam, dry chemical or CO₂ to extinguish. (Catalyst Black)
DOW DEUTSCHLAND ANLAGENGESELLSCHAFT MBH, Rheingaustr. 34, 65201 Wiesbaden, GERMANY, +49 611 237007, [email protected], www.dow.com
No files available for download
| Property | GTIN/EAN | MPN (Manufacturer Part Number) |
|---|---|---|
| - | - | DC-993-545g+30g |
* Price in Euro including VAT, plus forwarding charges.
In parentheses: price in Euro excluding VAT, plus forwarding charges.
Clients outside the EU as well as companies outside of Germany don't pay any VAT (excepting for shipping in Germany)!
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