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Bostik 940AFS
Bostik® 940A FS is a premium-quality, marine-grade sealant formulated with advanced hybrid polymer technology designed for its fast setting and fast skinning performance. It has an open time of 15 minutes and a skin-forming time of 10 minutes.
Fulfilled By ChemPoint
- Manufacturer: Bostik, Inc.
- Product Line: Bostik Transportation Adhesives
- Product: Marine Grade Adhesives and Sealants
- Industries: Maintenance, Repair, Overhaul | Transportation
- Authorized Countries: Canada | United States
Fulfilled By ChemPoint
Documents
Overview
Bostik® 940A FS is an innovative hybrid polymer adhesive sealant valued for its excellent flexibility and resilience, combining the strength of urethane with the elasticity of silicone. Bostik® 940A FS has a solvent- and isocyanate-free formulation that delivers outstanding flexibility, offering 300% elongation at break. Bostik® 940A FS can be applied to a variety of surface substrates and cured upon reaction with moisture to form a robust seal that is sandable and paintable.
The seal exhibited by Bostik® 940A FS has excellent resistance to UV and water exposure for applications both above and below the water line without seal failure or yellowing. Bostik® 940A FS is compatible with a range of materials, including fiberglass, PVC, steel, aluminum, and EPDM rubber, without the need for primer.
Specifications
Product type: Adhesive sealant, marine
Basic material: Silyl modified polymer (SMP)
Temperature resistance: −40°F to 212°F (−40°C to 100°C)
Application temperature: 40°F to 95°F (5°C to 35°C)
Curing method: Moisture
Specific gravity: Approx 1.4 g/mL
Skin-forming time: Approx 10 min
Open time: Approx 15 min
Curing speed after 24 hrs: 0.125 in (3 mm)
Shore A hardness: ca. 55
Tensile stress at break: 450 psi
Elongation at break: ca. 300%
Lap shear strength: Approx 285 psi
UV and weather resistance: Excellent
Primary Chemistry: Silyl modified polymer (SMP)
Features & Benefits
One-component, gun-grade polyurethane adhesive
Outstanding adhesion
Environmentally friendly and sustainable
Moisture curing
Free of isocyanates and solvents
Resistance to UV and ozone
For use above and below the water line
Offers surface sandability and paintability
Fast skinning
Primerless
High- and low-temperature resistance
Compatible with aluminum, zinc, steel, copper, brass, glass, polyester, PVC, FRP, and wood
Problems Solved
Damage or failure of adhesive due to harsh marine environments (UV, water, heat, or weather)
Inferior sealant is unable to withstand flexibility requirements
Applications
Bostik® 940A FS is a high-quality, fast-setting adhesive sealant engineered for use during manufacturing, assembly, and operation of a wide variety of equipment.
Sealing deck hardware, such as windows, doors, hulls, and keel joints
Marine hulls and thru-hull fittings
Rub rails
Portholes
Related Applications
Maintenance, Repair, Overhaul
Transportation
Related Chemistries
Maintenance, Repair, Overhaul
Transportation
Related End Markets
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