DOWSIL™ SJ-168: High-Performance Neutral Cure Silicone Weatherseal for Non-Structural
Core Properties
DOWSIL™ SJ-168 is a one-part, neutral cure silicone weatherseal supplied in 300ml cartridges and 590ml foil sausages. It cures by reacting with atmospheric moisture at room temperature, offering a 10-minute work time, 20-minute tack-free time, and 1-2mm/day deep cure rate.
Product Overview
Engineered for non-structural building joints, it delivers long-term flexible sealing. The neutral cure mechanism prevents corrosion on substrates like glass and aluminum. Simple application with standard caulking guns requires no mixing. The cured elastomer provides durable waterproofing, resisting temperatures from -50°C to 150°C, UV radiation, rain, and snow
Enhanced Features
| Feature | Technical Advantage |
| ±35% Movement Capability | GB13477 certified for thermal expansion |
| Non-Sag on Vertical Surfaces | Fills 6-25mm wide joints without slumping |
| 10-Minute Work Time | Ensures optimal tooling for smooth finishes |
Typical Applications
| Application Field | Substrate | Joint Specification |
| Curtain Wall Sealing | Glass/Coated Aluminum | Width≥6mm, Depth≥6mm |
| Metal Panel Joints | Painted Steel/Alu Composite | Width 8-15mm, Depth≥Width |
| Window Perimeter Sealing | Frame-Wall Interface | Backer rod required |
Typical Properties
| Parameter | Unit | Value | Test Standard |
| Work Time (25°C, 50% RH) | min | 10 | GB13477 |
| Tack-Free Time | min | 20 | GB13477 |
| Hardness, Shore A | - | 30 | GB13477 |
| Tensile Strength | MPa | 0.7 | GB13477 |
| Service Temperature | °C | -50 to +150 | Internal |
| Movement Capability | % | ±35 | GB13477 |
| Shelf Life | Months | 12 | - |
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
Product Tags:
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Neutral Cure Silicone Weatherseal DOWSIL™ SJ-168 For Non Structural Images
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