Hot Products
High Performance Silicone Weather Resistant Sealant from China Suppliers - Durable Factory Sealant for Extreme Conditions
✅
Key Product Features
1
Fast curing — greatly reduces the adverse effects of bad weather on the sealant surface during curing, such as surface deformation.
2
Neutral curing — non-corrosive to metal, coated glass, and other building materials.
3
For the normal expansion and shear deformation of the curtain wall, this product maintains its performance unchanged.
4
Excellent weathering resistance — heat and cold resistance, UV resistance, ozone resistance, and water resistance.
5
Outstanding high & low temperature resistance — after curing, will not become brittle, hardened, or cracked at -50°C, and will not soften or degrade at 150°C, maintaining good elasticity.
6
Excellent adhesion to most building materials.
❓
Frequently Asked Questions
Q
What makes JF402 sealant suitable for curtain wall applications?
JF402 is specifically designed to handle the normal expansion and shear deformation of curtain walls without any loss of performance. Its neutral curing formula ensures it will not corrode metal frames, coated glass, or other common curtain wall building materials.
Q
What is the working temperature range of JF402 after curing?
After curing, JF402 maintains excellent elasticity across an extreme temperature range. It will not become brittle, hardened, or crack at temperatures as low as -50°C, and it will not soften or degrade at temperatures as high as 150°C.
Q
Is JF402 resistant to UV rays and outdoor weathering?
Yes. JF402 offers excellent weathering resistance, including resistance to UV radiation, ozone, heat, cold, and water. This makes it highly reliable for long-term outdoor and façade applications exposed to harsh environmental conditions.
Q
Why is fast curing important for a sealant like JF402?
Fast curing significantly reduces the window of exposure to adverse weather conditions during the curing process. This helps prevent issues such as surface deformation, contamination, or compromised bonding that can occur when the sealant remains uncured for extended periods.
Q
What building materials is JF402 compatible with?
JF402 demonstrates excellent adhesion to most common building materials, including metal substrates, coated glass, stone, concrete, and various structural components used in modern construction and curtain wall systems.
Q
Does the neutral curing formula offer any advantage over acetoxy (acid-curing) sealants?
Yes. Unlike acid-curing (acetoxy) sealants, JF402's neutral curing system releases no acetic acid during curing. This means it will not corrode sensitive substrates such as metals, coated glass, natural stone, or concrete, making it a safer and more versatile choice for a wide range of building materials.