DOWSIL™ 791 Weatherproofing Sealant for Building Facade & Glazing

Product Introduction of DOWSIL™ 791 Silicone Weatherproofing Sealant

Basic Product Attributes

DOWSIL™ 791​ is a one-part, neutral-cure silicone weatherproofing sealant designed for building facades and glazing applications.

Product Description

DOWSIL™ 791​ offers exceptional weatherability and elasticity, maintaining performance stability within -50°C to 150°C without hardening or cracking. Its ready-to-use formula requires no mixing and cures into a durable, flexible silicone rubber seal, suitable for vertical and wide joints.

Special Properties

Key Features:

• ​Weatherability: Resists sunlight, rainwater, snow, ozone, and extreme temperatures.
• ​Workability: 20-minute working time, 45-50 minutes tack-free time (23°C, 50% RH).
• ​Non-sag: Ideal for vertical joints; minimum joint width/depth of 6mm.
• ​Certifications: Complies with GB/T 14683-2003, JC/T 882-2001, and ASTM C920.

Applications

• Glass curtain walls​ and ​aluminum extrusions​ in high-rise buildings.
• ​Composite panels​ in harsh weather conditions.

Technical Parameters

Notes

• Storage: 12-month shelf life in unopened containers below 32°C.
• ​Safety: Refer to SDS before handling.

1. Who are we?

We are Shenzhen Huazhisheng New Material Technology Co., Ltd., a professional industrial adhesives and sealants supplier based in China since 2018. we serve global markets: Mainland China (60%), Southeast Asia (20%), North America (10%), and Europe (10%).

2. What products do you offer?

we supply high-performance adhesives and sealants from global leaders including:

Cemedine, Dow Corning, Shin-Etsu, Araldite, and Momentive,etc.

3. How do you guarantee product quality?

Quality assurance through:

Mandatory pre-production samples approval

Final inspection by QC team before shipment

International certifications: SGS, UL, FDA, RoHS, REACH

4. Why choose us over other suppliers?

Reliable Supply:Authentic products from top manufacturers

Expert Support:Technical guidance for product selection

Global Compliance:Certifications meeting target market standards

Efficient Service:Customized solutions & professional support

5. What services do you provide?

Delivery​:EXW/FOB/CIF

Payment​:USD/EUR/CNY/HKD via T/T, L/C

Support​:Technical consultation & logistics coordination