KASTAR 793 Neutral Structural Glazing Silicone Sealant

Structural, Glazing, Auto glass, construction curtain wall

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Kastar 793 is single group, neutral curing structral silicone sealant. It has excellent adhesion power to most building materials without priming.


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  • KASTAR 793 belongs to RTV-1 and fast solidification products.
  • Neutral curing, non-corrosive to metal, coated glass, concrete, marble etc;
  • Excellent resistance to weather, and the service life is over 30 years in the condition of general weather;
  • Excellent resistance to low and high-temperature change.
  • Excellent adhesion to most common building material without priming.
  • Good compatibility with other neutral silicone sealants.
  • Service life over 30 years


Structural glazing uses
Sealing and bonding in building construction and structure engineering.
Curtain wall project glass and other construction bond and seal.
Sealing of auto glass and windshield.

Restriction of Usage

Unsuitable for all kinds of material that can effuse grease, plasticizer, or solvent;
Unsuitable for the airproof location, because it is required to absorb moisture in the air to cure for the sealant.
Unsuitable for frosty or moist surfaces.
Unsuitable for the continually soggy or moist place.
Cannot be used if the temperature is below 40C or above 400C 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; a nine-month guarantee

Optional Color

Black, white, grey or appointed color of clients

Packing Specification

280ml, 300ml, 310ml (net capacity) hard package or 590ml (net capacity) complex aluminum foil soft package (the actual weight is subject to final products)

Application Standard

China GB16776-2005 Silicone Structural Sealant

Capacity movement±25%
Skin formation25 minutes
Drying time(2mm/h)15
Max. Tensile strength1.1
Hardness shore40
Elongation at Break(%)≥220
Modulus Mpa(100%)0.60
Application temperature-5℃ to +50℃
Temperature resistance-50℃ to +120℃
Cold-hot adhesiveOK
Under water adhesiveOK
Elastic Recovery Ratio (%)90
Mass-loss Rate (%)4.5