QUALITY with CONFIDENCE
High performance, Bostik® Marine 940 Fast Set is a rapidly, moisture-curing; fast-skinning; one-component; hybrid polymer adhesive/sealant based upon Silyl Modified Polymer (SMP).
Bostik Marine 940 FS is specifically formulated to withstand harsh marine environments. It possesses UV resistance (non-yellowing); is sandable and paintable. It exhibits superior adhesion to porous and nonporous surfaces in most applications without the use of a primer, a feature not typically found in a traditional adhesive/sealant.
Bostik Marine 940 FS does not in-gas and has outstanding high and low temperature resistance. It is solventless and isocyanate free resulting in a product that is both environmentally and user friendly.
Bostik Marine 940 FS is recommended for use in bonding and sealing applications, particularly where permanent elastic bonding betweensurfaces is required. It can be used above and below the waterline. Its outstanding adhesion and UV resistance properties target this product for sealing deck hardware, through-hull fittings, rub-rails and portholes applications.
940 FS combines the adhesion/mechanical properties of a urethane, plus the flexibility and UV resistance of a silicone. 940 FS provides optimum bonding of aluminum, steel, fiberglass, EPDM rubber or PVC, typically without use of a primer. It maintains elasticity within temperature range of -40°F to 212°F (-40°C to 100°C).
Without primer, 940 FS adheres to clean, dry, grease-free surfaces on aluminum, stainless/galvanized steel, zinc, copper, brass, glass, PVC, polyester (GRP), FRP, painted or lacquered wood. MSR Primer M is recommended for applications that require very high thermal or physical stresses, especially under wet conditions.
Work Life/Open Time..........................15 minutes
Skin Time........................................10 minutes
Curing Time @77°F/50%RH/0.125"...........1 day
Application Temperature.......................40°F - 95°F
Green Strength...................................2.3
(lbs. - force/ft2 @ 0.125-in. thick, without sag)
Organic Solvent Content.........................None
Isocyanate Content.................................None
UV/Weather Resistance......................Excellent
Green Strength.................................Excellent
Internal Gassing on Cure.........................None
Paintable.........................After Skin Formation
Sandable..................................After Full Cure
Shelf Life...........................................Excellent
Easily Extruded........Manual Cartridge Gunning
Use Bostik® Hand & Tool Towels to clean excess sealant from all surfaces and tools while still uncured. Remove cured sealant carefully from surfaces using appropriate mechanical methods.
When stored between 40°F to 80°F (5°C to 27°C), Bostik® Marine 940 FS has a shelf life of 18 months (cartridges) and 12 months (sausages). Expiration date determined from the lot number printed on each cartridge or sausage.