KASTAR 789 silicone sealant

Kastar 789 Neutral Weatherproof Silicone Sealant – High-Performance Construction Sealant for Outdoor Use

Product Overview:

Looking for a reliable, long-lasting silicone sealant for exterior construction and glazing? Kastar 789 Neutral Weatherproof Silicone Sealant is a professional-grade, one-component sealant formulated for high-performance weather sealing. It offers excellent adhesion, superior flexibility, and outstanding durability – perfect for sealing glass, aluminum, concrete, and other common building materials.

Why Choose Kastar 789?

• ✅ Weatherproof & UV Resistant – Engineered to withstand harsh outdoor conditions, including rain, sunlight, and ozone exposure. Ideal for long-term exterior applications.

• ✅ Neutral Cure Technology – Non-corrosive and safe for use on metal, concrete, PVC, glass, and painted surfaces. No unpleasant vinegar smell.

• ✅ Excellent Flexibility & Adhesion – Maintains strong bonds and flexibility over time, reducing cracks and leaks.

• ✅ Multi-Surface Compatibility – Perfect for curtain walls, aluminum cladding, glass joints, window and door frames, and expansion joints.

• ✅ Easy Application – Smooth extrusion, easy tooling, and consistent performance in various temperatures.

Typical Applications:

• Glass and aluminum sealing

• Curtain wall joints

• Precast concrete expansion joints

• Window and door perimeter sealing

• General construction and waterproofing

Product Specifications:

• Type: One-component, neutral cure silicone

• Temperature Resistance: -50°C to +150°C

• Shelf Life: 12 months (unopened)

• Packaging: 300ml cartridges 

Storage Instructions:

Keep in a cool, dry place. Avoid direct sunlight and freezing conditions.