Lvkang 9900 Silicone Waterproof Sealant – Wall, Stone & Doors

Lvkang 9900 Weatherproof Structural Silicone Sealant

Seal it once — seal it right. The Lvkang 9900 Structural Silicone Engineering Adhesive is a professional-grade, quick-drying waterproof sealant designed for demanding indoor and outdoor applications. Whether you're sealing tiles, stone, metal joints, curtain walls, or door and window frames, this high-performance silicone delivers a lasting, watertight bond that holds up against the elements.

Made in Mainland China.

Key Features

• High Flexibility & Tear Resistance: Engineered to handle stretching, pulling, and extreme temperature swings — stays elastic and crack-free in both scorching heat and freezing cold for reliable long-term performance.
• Smooth & Easy Application: Extrudes finely and evenly for a smooth, bubble-free finish. No rough edges, no air holes — just a clean, professional-quality seal every time.
• Waterproof & UV-Resistant: Forms a permanent waterproof barrier against leaks, cracks, and weather damage. Resists water, UV rays, and high temperatures for both interior and exterior use.
• 3 Color Options: Available in White, Black, and Clear (Transparent) — blend seamlessly into any surface including walls, tiles, stone, or metal without affecting appearance.
• Versatile Applications: Perfect for curtain walls, skylights, aluminum panel structures, sunroom frames, tile sealing, metal joints, doors, windows, and general construction or home repair projects.

Specifications

What's in the Box

1, 2, or 3 × Lvkang 9900 Silicon Waterproof Sealant (select your quantity above)

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Safety & Standards

For information on safe use of adhesives and sealants in the home and workplace, refer to the U.S. Consumer Product Safety Commission (CPSC). Always apply in a well-ventilated area and follow all manufacturer instructions.

Learn more: Sealant

Frequently Asked Questions

Q: What surfaces is the Lvkang 9900 silicone sealant compatible with?

A: The Lvkang 9900 is compatible with a wide range of surfaces including ceramic tiles, natural stone, glass, metal, aluminum panels, concrete walls, and wooden door/window frames. It is ideal for both indoor and outdoor applications such as bathrooms, kitchens, skylights, curtain walls, and sunroom frames.

Q: How long does the silicone sealant take to dry and cure?

A: The sealant is quick-drying — surface skin typically forms within 10–30 minutes under normal conditions. Full cure may take 24–48 hours depending on temperature, humidity, and bead thickness. Avoid contact with water during the curing period for best results.

Q: Can I use this sealant outdoors?

A: Yes. The Lvkang 9900 is formulated to resist UV rays, water, and extreme temperature fluctuations, making it an excellent choice for outdoor use including curtain walls, skylights, metal cladding joints, and exterior door and window sealing.

Q: Which color should I choose?

A: Choose Transparent/Clear for glass, tile, or surfaces where you want an invisible seal. White is ideal for light-colored walls, bathrooms, and window frames. Black works well for dark surfaces, metal panels, and industrial applications.