GH-990 Structural Silicone Sealant

Guhe Structural Silicone Sealant (GH-990) is a high-strength, one-component, neutral-cure silicone sealant specially developed for structural glazing and curtain wall facade engineering. It creates stable structural bonding between glass panels and metal framing, delivering dependable load transfer and guaranteeing long-term structural safety of building exteriors.

Produced strictly in accordance with mandatory national standard GB 16776 for construction structural silicone sealants, GH-990 features outstanding adhesion to glass, anodized aluminum, stainless steel and most common building materials. The neutral curing formula is low-odor and non-corrosive, friendly to sensitive construction substrates. With superior weather resistance and stable tensile strength, it maintains bonding integrity under temperature variation, wind pressure and long-term outdoor exposure.

Widely used for high-rise glass curtain walls, SSG structural glazing systems, aluminum panel & stone curtain walls, and point-supported glass facade structural bonding.
Available specifications: 300ml cartridges, 590ml sausage packs, 200L bulk drums. COA certification is supplied for every shipment.

Cure Type	Neutral	—
Tensile Strength	≥ 0.7 MPa	GB 16776
Tensile Modulus (23°C)	≤ 0.4 or ≥ 0.4 MPa	GB/T 13477.8
Adhesion in Tension	No failure	GB/T 13477.10
Service Temperature	-50°C to +150°C	—
Shelf Life	12 months	—

 

 

 

 

 

 

 

 

Structural Glazing of Glass Curtain Walls:

For structural bonding of glass panels to metal frames in high-rise curtain wall systems, ensuring load transfer and facade structural safety.

Structural Sealant Glazing (SSG):

For glass-to-metal bonding in Structural Sealant Glazing (SSG) systems, meeting the high-strength and high-reliability requirements of curtain wall engineering

Aluminum & Stone Curtain Walls:

For structural bonding of panels to framing in aluminum and stone curtain walls, accommodating wind pressure and thermal movement.

Point-Supported Glass Curtain Walls:

For structural sealing between glass panels and metal connectors in point-supported glass curtain wall systems.