Alstone WS 789 Vs other weather Silicone sealants in market

 

Alstone WS 789 is a premium neutral-cure silicone sealant primarily used for architectural weatherproofing and glazing. The difference between Alstone Silicone Sealants and others

Alstone Silicone Sealant WS 789 One-part Oxime Neutral-cure Silicone	Other Sealant Type One-part Alkoxy Neutral-cure Silicone
Primary Use ACP sheets, glass panels, stone, Curtain walls, building facades, and general glazing	Primary Use Curtain walls, building facades, and general glazing
Movement Capability ±75%	Movement Capability ±50%
Shore A Hardness 32–35	Shore A Hardness ~28
Tack-Free Time < 120 minutes	Tack-Free Time < 80 minutes
Tensile Strength 1.89 MPa (16 kg/cm²)	Tensile Strength ~1.57 MPa (16 kg/cm²)
Elongation 700%	Elongation 500%
Colors Available Extensive: White, Black, Grey, and custom colors (Red, Gold, Green, etc.)	Colors Available Standard: White, Black, Grey, Bronze, and Limestone
Operating Temp -50°C to +150°C	Operating Temp -50°C to +100°C

 

Key Selection Factors

·         Customization: 

Alstone WS 789

 is highly regarded for its color matching services, allowing it to be used on specialized architectural facades where standard sealant colors would be visible.

·         Performance: 

Alstone WS 789

 generally exhibits higher ultimate elongation (700%) and a wider service temperature range, making it a preferred choice for high-stress structural glazing and curtain wall systems.

·         Application: Both products offer primerless adhesion to most common building substrates like aluminum, glass, concrete, and steel.