Pecora 895NST Structural Silicone Glazing and Weatherproofing Sealant - 20 Fluid Ounce Sausage

Pecora 895NST is a high-performing, neutral curing, medium modulus silicone sealant that is specifically formulated for structural and non-structural glazing with excellent aesthetic characteristics of which it will not stain sensitive, porous or natural stones, such as, granite or marble. Pecora 895NST will not contribute to residue run-down on nonporous surfaces, such as, metal, panel or glass curtain wall facades. Reduction in long-term dirt pick up on sealant surfaces is also a feature of the Pecora NST line of silicone architectural grade sealants. With a dynamic movement capability of ±50%, to complement its structural strength, Pecora 895NST is equally efficient as a weatherseal in the vast majority of sealant applications besides glazing. Pecora 895NST provides excellent, unprimed adhesion to most surfaces including glass, reflective glass, anodized aluminum, plastics, wood, masonry, and fluoropolymer based paints. Pecora 895NST has a long working time for ease of application and tooling and has an extremely fast cure-through period after an initial set. Pecora 895NST is compatible with most laminated glass units, acrylic and polycarbonate glazing sheets and is easily applied in all working temperatures. Pecora 895NST will not corrode building components, has a mild odor and is suitable for use on natural stones such as limestone, granite or marble.

Applications

Designed For...

• structural glazing of glass, metal and plastic
• unprimed adhesion to glass, reflective glass, anodized aluminum, plastics, wood, masonry and fluoropolymer based paints.
• use as a weatherseal in structural glazing applications
• non-structural glazing applications including cap, toe and heel beads and as a weatherseal in glass to glass butt joint glazing
• sealing expansion and control joints in precast concrete panels, metal curtain walls, and natural stone
• perimeter sealing of doors, windows and other building components
• adhering stiffeners to building panels
• use in unitized curtain wall systems
• security glazing and impact-resistant window systems

Limitations:

Pecora 895NST should not be used in these applications or conditions: 

• To seal exterior insulation finish systems (EIFS). 
• To seal horizontal joints in decks, walks, driveways, etc. subject to abrasion. 
• To seal marine joints at or below the waterline. 
• In totally confined or air-free spaces. 
• In designs that require painting after application of sealant. 
• On surfaces with special protective coatings without prior consultation with Technical Services department. 
• In contact with building materials that bleed oils, plasticizers or solvents, i.e. impregnated wood, oil-based caulks, green or vulcanized rubber gaskets or tapes. 
• When surface temperatures during application exceed 140°F. 
• To damp or frost covered surfaces. 
• 895NST Translucent (Pecora color #610) is not intended for use in 4-sided structural glazing applications.