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Weatherproofing Silicone Sealant With 50% Movement Capability FNS66

FNS Weatherproofing Sealant is one-component, neutral-curing, high-movement capability silicone weatherproof sealant, specifically designed for weather sealing of joints with large movements. With a movement capability of up to 50%, it is suitable for high-rise curtain walls and large panel curtain wall joint displacements. It offers excellent weather resistance and high/low temperature performance, making it an ideal sealing material for high-rise glass curtain wall joints and other interfaces with high displacement requirements.

Features & Benefits

Non-corrosive and non-polluting to metals, coated glass, granite, and marble.
With a movement capability of up to 50%, it can accommodate the expansion, contraction, and shear deformation of super-high-rise and large-panel curtain walls, providing effective sealing.
Outstanding weather resistance and anti-aging performance, resistant to UV, ozone, and water.
Excellent high and low temperature resistance, good adhesion and elasticity in the range of -50°C to 150°C after curing.
Superior adhesion, forming a strong bond with most building materials.
Performance good when use with other neutral silicone sealants.

Applications

Weatherproof sealing for high-rise and super-high-rise curtain walls
Weatherproof sealing for large panel curtain walls
Seam sealing for high-rise dry-hung stone curtain wall projects
For applications with particularly high sealing safety requirements and various other uses.

Typical Properties

No.	Item	Technical Specifications		Measured Value
1	Sagging, mm	Vertical	≤3	0
1	Sagging, mm	Horizontal	No deformation	No deformation
2	Surface Drying Time, h		≤3	≤2
3	Extrudability, mL/min		≥150	≥200
4	Elastic Recovery Rate, %		≥80	≥88
5	Mass Loss Rate, %		≤5.0	≤5.0
6	Tensile Modulus, MPa	23°C	>0.4 or >0.6	>0.4
	Tensile Modulus, MPa	-20°C	>0.4 or >0.6	>0.6
7	Constant Extension Adhesion		No failure	No failure
8	Constant Extension Adhesion after Water Immersion		No failure	No failure
9	Adhesion after Cold Stretching and Hot Pressing		No failure	No failure
10	Constant Extension Adhesion after Water Immersion and Light Exposure		No failure	No failure
11	Alkane Plasticizer		Not detectable	Not detectable
12	Pollution, mm Sagging, mm	Pollution Depth	≤2.0	0
12	Pollution, mm Sagging, mm	Pollution Width	≤2.0	0