KASTAR 115 Windshield/Auto Glass PU sealant

Auto Glass, Windsheild, Fast cure, Stronger adhesion

  • Check Mark Quality assurance
  • Check Mark Fast delivery
  • Check Mark Big order discount
  • Check Mark Free sample

Kastar 115 Windshield/Auto Glass PU sealant is a commercial grade, one-part, non-sag, polyurethane sealant that cures by reaction with atmospheric moisture to form a durable and weathering-resistant elastomer, KASTAR115 is manufactured in accordance with the ISO/TS 16949:2002.


We are professional manufacturer
of adhesives and sealants

Technology datasheet

Testing Items Performance
Density (g/cm³)1.35±0.05
Sagging properties (mm)0
Shore A-hardness (A°)61±3
Tensile strength (Mpa)≥4.0
Elongation at break (%)≥350
Volatile content (%)≤4
Tensile-share strength (Mpa)≥1.5
Touch dry time (min)10~30
Curing speed (mm/24h)3~5
Extrudability (g/min)80
Pollution propertiesNon
Application temperature (℃)+5~+35
Shelf life (month) 9


  • One-component formulation.
  • Safe Drive Away Time in as little as two hours when used on vehicles with airbags.
  • Modest Hardness after curing.
  • Flexible, durable, and excellent extrudability.
  • Need no primer to glass.
  • No sagging, no pollution, and corrosion to base material and environment.
  • Excellent sealing performance, excellent water, and aging resistance.


  • Suitable for automobile windshield and side glass installation.
  • Suitable for car body structural bonding and sealing.


Clean and dry all surfaces by removing foreign matter and contaminants such as oil dust, grease, frost, water, dirt, old sealants, and any protective coating. Dust and lose particles should be cleaned.


310ml cartridge, 20 pcs/carton
600ml/400ml sausage, 20 pcs/box, 2box/carton


Minimum application temperature: 5℃.

Kastar115 should be dispensed from either the cartridge or sausage by means of a caulking gun. Pierce the membrane at the top of the cartridge and screw on the nozzle. Cut the nozzle to give the required angle and bead size. Place the cartridge in an applicator gun and squeeze the trigger. For sausages, a barrel gun is required, clip the end of the sausage and place it in the barrel gun. Screw the end cap and nozzle on to the barrel gun. Using the trigger extrude the sealant, to stop depression using the catch plate. Apply Kastar115 in a continuous bead using enough pressure to properly apply the sealant.


  • For common occasions, after cleaning out the surface with the organic solvent, this product can be used directly.
  • Please construct by application instructions strictly, failure of stickiness may be caused by any operation disobeying construction techniques.
  • This product is innocuous after curing completely, but before set, please avoid contact with eyes and skin. In case of eye and skin contact, wash immediately and thoroughly with soap and water. See a doctor immediately if it is serious.


Activators and/or primers is not required.