Dow 781

DOWSIL 781 Acetoxy Sealant is not recommended for use on porous substrates such as concrete, stone, marble or granite. DOWSIL 781 Acetoxy Sealant should not be used in contact with the edge seal of an insulated glazing unitDo not use DOWSIL 781 Acetoxy Sealant on bituminous substrates,substrates based on natural rubber, choloroprene or EPDM, or on building materials and flexible plastics which might bleed oils, plasticizers, or solvents. Do not use DOWSIL 781 Acetoxy Sealant in a totally confined space because the sealant requires atmospheric moisture to cure. Because acetic acid is released during curing, it can corrode mirror silver and sensitive metals such as copper, brass and lead. DOWSIL 781 Acetoxy Sealant is not recommended for use on submerged joints, or in joints where physical abuse or abrasion is likely to occur.DOWSIL 781 Acetoxy Sealant is not suitable for food contact applications. However, it has been listed by the UK Water Fittings Byelaws Scheme for use in contact with potable water, once cured.DOWSIL 781 Acetoxy Sealant has not been designed for use as an aquarium sealant.DOWSIL 781 Acetoxy Sealant is not recommended for structural glazing or insulated glazing applications.DOWSIL 781 Acetoxy Sealant is not recommended for structural glazing or insulated glazing applications.This product is neither tested nor represented as suitable for medical or pharmaceutical uses.

FEATURES AND BENEFITS

High strength

Good elasticity

Conforms to ISO 11600-F&G-20LM

Resistant to ozone, ultra-violet radiation and temperature extremes

INSTRUCTIONS FOR USE

DOWSIL™ 781 Acetoxy Sealant is a one-part, silicone sealant which has good adhesion to a range of non-porous surfaces including glass, aluminum, painted surfaces and composite boards. It offers excellent resistance to aging, shrinkage, cracking and discoloring. It is also approved in certain countries for use in contact with potable water once cured.

TECHNICAL DATA (TYPICAL VALUES)

PropertyResult
Consistency
Base oil viscosity
Drop point
Flash point (IP34)
Effective temperature range°C+5 to +40°F +41 to +104
Solidification point (of the base fluid)
Coefficient of friction (steel on steel, steady state)

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