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LaSeal 789 Neutral Weatherproof Silicone Sealant

LaSeal 789 is one component and medium modulus weather-proof silicone sealant. It specially designed for sealing of exterior and interior materials.

Neutral cure, weatherproof, waterproof, Excellent UV-resistance

Color:White, Black, Gray and customized color

Packing information: 280ml, 300ml, or 310ml (net capacity), 600ml. 190L by drum

    Main purposes

    1.For weather sealing in glass curtain wall joints;
    2.For weather sealing in aluminum, enamel curtain wall joints;
    3.For sealing in marble (granite), concrete, tile, metal panel materials etc.;
    4.Many other building & Industrial uses.

    Characteristics

    1.KALI 8000 belongs to RTV-1, good extrusion and thixotropy between 4°C~40°C. Easy to use.
    2.Neutral curing, non-corrosive to metal, coated glass, concrete, marble and most kinds of plastic etc;
    3.Quickly speed of curing, excellent adhesion, middle modulus, excellent movement capability;
    4.Excellent resistance to weather;
    5.Excellent resistance to low and high temperature change. Little changes of performance at -40°C ~150°C;
    6.Excellent adhesive to most common building material, Special material will have better adhesive with priming;
    7.Good compatibility with other neutral silicone sealants;
    8.Belong to non dissolvent product, low vulcanization shrinkage and green environmental protection product.

    Application

    1.Cementation and sealing of glass, aluminum, etc.
    2.Enamel curtain walls and metal plates sealed and weathered.
    3.Cementation and sealing of the corner lines of the skylight, diagonal, and aluminum doors and windows, storefront, and display window.
    4.Excellent sealing ability for greaseless materials, glass, glass fiber, pottery, and porcelain.
    5.Weather sealing for joints in precast slabs and stone curtain walls.
    6.Sealing pavement and tunnel expansion joints made of concrete.
    7.Ceramic engineering adhesive and sealing in an expansion joint.
    8.Joint sealing in glass, metal, plastic, and other materials combined with stone.
    9.Widely used in moist and muggy environments
    10.Where the need for fungal resistance exists.

    Technical Data Sheet(TDS)

    Technology data:The following data are only for reference purpose, not intended for use in preparing specification

    LaSeal 789 Neutral Weatherproof Silicone Sealant

    Testing Standard: GB/T14683-2003 《Silicone Building Sealant》

    Item

    Data

    Type

    Neutral

    Density (g/cm3 )

    1.3

    Capacity movement

    ±30%

    skinning time

    10-20 minutes

    Drying time (2mm/h)

    10-14

    Drying(4mm/h)

    18-22

    Max. Tensile strength

    1.8

    Hardness shore

    25

    Elongation at Break(%)

    ≥450

    Modulus Mpa(100%)

    0.60

    Application temperature

    -20 C to +40 C

    Temperature resistance

    -50 C to +100 C

    Adhesive

    OK

    weatherproof

    OK

    Cold-hot adhesive

    OK

    under water adhesive

    OK

    Elastic Recovery Ratio(%)

    98

    Mass-loss Rate (%)

    9.6

    Skin drying time and fully drying time under: 23℃ and 50% humidity

    Limitations

    1.Not suitable for use as a structural sealer.
    2.Not appropriate for any kind of material that can release solvent, plasticizer, or grease.
    3.Not appropriate for the airtight area, as the sealant has to take up moisture from the surrounding air to cure.
    4.Not appropriate for damp or icy terrain.
    5.Not appropriate for an area that is constantly damp or damp.
    6.Can’t be used if the temperature is below 4°C or above 40°C on the surface of the materials.

    Instruction

    1.Wipe the base material off with a cloth and clean it with a solvent. If necessary, apply paint base to the surface and allow it to dry completely.
    2.Ensure that it is fully inserted into the interface and firmly adhered to the base material.
    3.Take care of the adhesion test before to usage and confirm that the products and base material are well matched in terms of viscosity.

    Storage and shelf life

    1.They should be protected from water, frost and adverse air conditions.
    2.They should be kept dry and cool on wooden pallets at between +10 °C and +25 °C in moisture free conditions.
    3.The opened products should be consumed immediately.
    4.Shelf life is maximum 12 months conditional to complying with the aforementioned storage conditions.

    Technical Data Sheet(TDS)

    Technology data:The following data are only for reference purpose, not intended for use in preparing specification

    LaSeal 731 Middle Quality Acetoxy Silicone Sealant

    Item

    Data

    Type

    Acetoxy

    Density (g/cm3)

    0.98

    Capacity movement

    ±30%

    skinning time

    5-15 minutes

    Drying time(2mm/h)

    8-10

    Drying(4mm/h)

    18-22

    Max. Tensile strength

    1.3

    Hardness shore A

    21 Judges 2

    Elongation at Break(%)

    =500

    Modulus Mpa(100%)

    0.60

    Application temperature

    -20 C to +40 C

    Temperature resistance

    -50 C to +100 C

    Adhesive

    OK

    weatherproof

    OK

    Cold-hot adhesive

    OK

    under water adhesive

    OK

    Elastical Recovery (%)

    96

    Mass-loss Rate (%)

    35

    Limitations:The product is not applicable to structure assembly or project whose base material has a surface temperature above 40 ℃.