KASTAR 789 Super Neutral Weather-proofing Silicone Sealant
Neutral cure, weatherproof, waterproof, Excellent UV-resistance
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KASTAR 789 is one component and medium modulus weather-proof silicone sealant. It specially designed for sealing of exterior and interior materials.
OEM & ODM
We are professional manufacturer
of adhesives and sealants
* For weather sealing in glass curtain wall joints;
* For weather sealing in aluminum, enamel curtain wall joints;
* For sealing in marble (granite), concrete, tile, metal panel materials etc.;
* Many other building & Industrial uses.
Restriction of Usage
1. Can’t be used as a structural sealant.
2. Unsuitable for all kinds of material that can effuse grease, plasticizer, or solvent.
3. Unsuitable for the airproof location, because it is required to absorb moisture in the air to cure for the sealant.
4. Unsuitable for frosty or moist surfaces.
5. Unsuitable for a continually soggy or moist place.
6. Can’t be used if the temperature is below 4°C or above 40°C on the surface of the materials.
* Non-toxicity when cured.
* Avoid eye contact before curing. If this happened, rinse opened eye for several minutes under running water, then consult with a doctor.
* Keep away from children.
* Ensure adequate ventilation at the workplace or curing area.
Keep in dry place; don’t unseal it before use; keep a storage temperature below 25℃ to prolong its service life; 12 moths guarantee.
China GB16776-2005 Silicone Structural Sealant
|Skin formation||10-20 minutes|
|Max. Tensile strength||1.8|
|Elongation at Break(%)||≥450|
|Application temperature||-20℃ to +40℃|
|Temperature resistance||-50℃ to +100℃|
|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
Black, white, grey or appointed color of clients
280ml, 300ml, 310ml (net capacity) hard package or 590ml (net capacity) complex aluminum foil soft package (the actual weight is subject to final products)