SS621 Silicone Structural Sealant

DESCRIPTIONSS621 Silicone Structural Glazing Sealant is a one-component, high strength neutral curing silicone sealant designed and tested for structurally glazed curtain wall applications. The material is supplied as a paste, which cures into an extremely tough elastomeric silicone rubber ensuring a durable, flexible, watertight bond upon exposure to atmospheric moisture.CHARACTERISTICS High strength and high elongation Odorless, non-corrosive cure system Excellent weatherability and high resistance to ultraviolet radiation, heat and humidity, ozone and temperature extremes Remains flexible over a temperature range of -55°F (-48°C) to 250°F (121°C) Successfully tested for use in protective glazing applications Excellent unprimed adhesion to wide range of substrates including coated, enameled and reflective glasses, anodized and polyester coated or painted aluminum profiles including most fluoropolymerbased paints Good compatibility with other neutral silicone sealants Meets global standards for structural glazing (American, China, Europe) APPLICATIONS Silicone structural glazing in curtain wall; such as factory glazing of unitized curtain wall systems or in field constructed stick curtain wall systems. Structural attachment of many panel systems. Protective glazing applications. Panel stiffener applications. TYPICAL PROPERTIESProperty Result Test method As SuppliedColor Black, gray, white Tack free time(23°C/73°F, 50% RH) 45 minutes ASTM C679 Curing Time 23ºC (73ºF) at 50% RH 7-14 days Full Adhesion14-21 days Flow, Sag or Slump 0.1 inches max ASTM D2202 Working Time 10-20 minutes Specific Gravity 1.33 As CuredDurometer Hardness, Shore A 47 ASTM D2240 Ultimate Tensile Strength 1.12MPa ASTM C1135 Ultimate Elongation 270% ASTM C1135 Tensile at 25% Elongation0.35MPa ASTM C1184 Tensile at 50% Elongation 0.52MPa ASTM C1184 Joint Movement Capability ±25% ASTM C719 Specifications: Typical property data values should not be used as specifications. Assistance with specifications are available by contacting Guangzhou Baiyun Chemical Industry CO., LTD.