999AAL CORNING Dow Silicone Glazing Sealant

Review CORNING Dow 999a Silicone Glazing Sealant Aluminum

Corning 999AAL Dow 999A Silicone Glazing Sealant

The Corning 999AAL Dow 999A Silicone Glazing Sealant is a high-performance, one-component, neutral curing, silicone sealant specially designed for sealing primary and secondary glazing applications in architectural and industrial buildings. This sealant offers exceptional adhesion and sealing properties, making it an ideal choice for sealing glass, metal, and other non-porous surfaces.

1. Superior Adhesion: The Corning 999AAL Dow 999A Silicone Glazing Sealant provides excellent adhesion to various surfaces, including glass, metal, and other non-porous materials. This ensures a secure bond and long-lasting seal, even in harsh environmental conditions.

2. Neutral Curing: This sealant cures neutrally, meaning it does not change color during the curing process. This feature is essential for maintaining the aesthetic appeal of the sealed joints and glazing systems.

3. Weather Resistance: The Corning 999AAL Dow 999A Silicone Glazing Sealant is designed to withstand extreme temperatures, UV radiation, and other weather conditions. It offers excellent resistance to water, wind, and air infiltration, ensuring a weather-tight seal that protects the building's interior from the elements.

4. Flexibility: With a tensile strength of over 350 psi and a Shore A hardness of 25, this sealant provides excellent flexibility. It can withstand movement in the sealed joints without cracking or breaking, ensuring a continuous, effective seal.

5. Easy Application: The Corning 999AAL Dow 999A Silicone Glazing Sealant can be easily applied using various tools, such as caulking guns or putty knives. It has a working time of approximately 30 minutes at room temperature, providing ample time for proper application and tooling.

6. Low Shrinkage: This sealant has a low shrinkage rate, ensuring minimal voids and gaps in the sealed joints. This results in a more uniform, effective seal that provides better protection against weather and air infiltration.

7. Non-Sagging: The Corning 999AAL Dow 999A Silicone Glazing Sealant is formulated to resist sagging, making it ideal for use in vertical applications. This feature ensures a clean, professional appearance and prevents unsightly drips or runs.

8. Low Volatility: This sealant has a low volatility rate, meaning it does not evaporate easily. This ensures that the sealant remains in place during application and curing, providing a more consistent and effective seal.

9. Resistant to Chemicals: The Corning 999AAL Dow 999A Silicone Glazing Sealant is resistant to various chemicals commonly found in building environments, including acids, alkalis, and solvents. This ensures the sealant's longevity and effectiveness, even in industrial settings.

10. Compliance with Industry Standards: This sealant complies with various industry standards, including ASTM C833, ISO 23216, and EN 1154. It also meets the requirements of various building codes and regulations, making it a reliable and trusted choice for building professionals and contractors.

Corning 999 and DOW 999A are silicone glazing sealants manufactured by Corning and DOW, respectively. Both are popular choices for sealing double-pane insulated glass units due to their excellent sealing performance and resistance to weathering. In this analysis, we will discuss the pros and cons of using Corning 999 and DOW 999A for sealing insulated glass units.

1. High-performance: Corning 999 is known for its superior sealing performance. It forms a tight seal around the glass, preventing air and moisture from entering.

2. Flexibility: The silicone sealant has good flexibility, allowing it to expand and contract with temperature changes.

3. Long-lasting: Corning 999 is highly resistant to UV light, ensuring the sealant remains effective for an extended period.

4. Easy to apply: The sealant is easy to apply and tool, ensuring a smooth and even finish.

1. Expensive: Compared to other silicone sealants, Corning 999 is more expensive.

2. Cure time: Corning 999 requires a longer curing time (approximately 28 days) before it reaches full strength.

1. Cost-effective: DOW 999A is generally less expensive than Corning 999.

2. Fast curing: DOW 999A has a shorter curing time (approximately 7 days) compared to Corning 999.

3. Good sealing performance: DOW 999A provides a good sealing performance, preventing air and moisture from entering the insulated glass unit.

1. Less flexible: DOW 999A is less flexible than Corning 999, which could result in the sealant cracking over time if the glass expands or contracts significantly.

2. Lower resistance to UV light: DOW 999A has a lower resistance to UV light compared to Corning 999, which may result in the sealant degrading more quickly.

Both Corning 999 and DOW 999A are effective silicone sealants for sealing insulated glass units. Corning 999 offers superior sealing performance, flexibility, and long-lastingness but comes at a higher cost and longer curing time. DOW 999A is a cost-effective alternative with a faster curing time, but it has lower flexibility and resistance to UV light compared to Corning 999.

If budget is not a constraint and you require the best sealing performance, flexibility, and long-lastingness, Corning 999 is the recommended choice. However, if you're looking for a cost-effective option with a shorter curing time, DOW 999A is a suitable alternative. It is essential to consider the specific requirements of your project and weigh the pros and cons carefully before making a decision.

Details:

Dow Corning 999-a is a one-part acetic cure silicone sealant that cures in the presence of atmospheric moisture to produce durable and flexible wet glazing curtain wall seal. It is designed for conventional glazing of glass and plastic, curtain wall sealing, solar panels, replacement. Laurence 999AAL Carl aluminum dow Corning 999-a silicone building and glazing sealant.

specifications buildymat:

• brand: Corning
• mpn: 999aal
• part type: Aluminum
• item type keyword: Silicone-adhesives
• material: Silicone, Plastic

seller buildymat:

• # reviews: 5395
• rating: 99.1%
• city: las vegas, nevada

general buildymat:

• category: Business & Industrial > Supplies > Building Materials

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returns buildymat:

• policy: returns accepted
• paid by: buyer
• method: money back
• time: 30 days

offer buildymat:

• prices: $26.87–$28.99
• item condition: New
• in stock #: 4
• availability: in stock
• started: november 6, 2025
• options: ship-to-home
• sold #: 12

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• type: fixed
• class: economy
• service: economy
• transit: 4-11 days