DOWSIL 791 Weatherproofing Sealant for Building Facade & Glazing

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

Shenzhen Huazhisheng New Materials Technology Co., Ltd. is a leading provider of environmentally friendly adhesives and technical solutions, specializing in the application of modified silicone rubber, epoxy adhesives, thermal materials, bonding adhesives, encapsulation adhesives, and UV adhesives across various industries such as electronics, home appliances, LED lighting, automotive, consumer electronics, rail transit, aerospace, and electrical power. Huazhisheng New Materials adheres to the corporate sustainable development strategy of "Progress, Innovation, Professionalism, and Integrity," and integrates the philosophy of "Quality, Efficiency, Environment-Friendly, and Reliability" throughout the entire product lifecycle. Our products have passed SGS, UL, FDA, DIN, and non-toxic certifications, and have been awarded multiple global patents, making us one of the primary suppliers of adhesives and new materials in China's new energy, electronics, automotive, industrial, packaging, environmental protection, construction, and high-speed rail sectors.
With an innovative perspective, we offer customized solutions, continuously develop leading technologies, and provide comprehensive support to clients across various industrial sectors. We are committed to collaborating with our clients to drive industrial transformation and upgrading, ensuring your sustained competitive edge.
Based on advancements in various polymer chemical materials, Huazhisheng New Materials has established a leading position in four key areas: coating, bonding, sealing, and thermal conductivity. Our efficient and environmentally friendly adhesive products and technical solutions help industrial enterprises enhance production efficiency and benefits, protect your electronic products from external chemical agents and harsh usage environments, and extend their lifespan, ensuring continuous and stable operation.