1. Excellent adhesion
2. Used for structural glazing and sealing for glass
JOINLEADER 990 Curtain Wall Silicone Sealant
JOINLEADER 990 Structural Silicone Sealant is a one-part high quality, neutral and room-temperature cured Silicone Structural Sealant.
JOINLEADER 990 Structural Silicone Sealant has excellent adhesion without applying primer painting to many architecture materials such as glass, coated glass, anode aluminum material, granite and coated mental material
JOINLEADER 990 Structural Silicone Sealant has high ultimate tensile strength sealant ideally suited for structural bonding and protective glazing applications
One component, odorless, neutral and non-corrosive cure at room temperature.
Excellent resistance to weather, over 50 years’ duration
Excellent resistance to low and high temperature, performance changes little between -50°C~200°C
Excellent mechanical properties
Very good adhesion and compatibility, especially to metals (non-corrosive) and various paint systems.
Compatible to most membrane-plated glass or hollow glass.
Meets global standards for structural glazing (American, China, Europe)
BEFORE CURED: 23°C±2°C, RH50%±5%
Aspect Thixotropic Paste
Gravity, g/ cm3 1.30~1.45
Skinning Time,min: 25-60
Application Temperature, °C +5°C to +40
AFTER CURED: 23°C±2°C, RH50%±5% 21days
Service Temperature: -50°C to +250°C
Tack-free time, h
Mass loss by heat, %
Joint Movement Capability,%
Tear Strength, die B,ppi
Tensile at 25% Elongation,MPa
Tensile at 50% Elongation,MPa
Elongation at break,%
JOIN LEADER 990 Structural Silicone Sealant can be used for structural glazing and sealing for glass, stone, aluminum panel curtain wall, and secondary seal of insulating glass, filling and sealing for complex edge.
JOIN LEADER 990 Structural Silicone Sealantis suitable as a secondary edge sealant for the manufacture of multipane insulating glass used in structural glazing façades.
JOIN LEADER 990 Structural Silicone Sealant is also used for sealing and bonding in building construction and technical/industrial applications.
12 months in unopened packaging in a cool and dry storage place at temperatures between +5°C and 27°C.
Also we can produce weatherproofing sealant with special color upon customers' requirement.