PU Sealant


PU Sealant is single part polyurethane based, high modulus sealant, which cures on exposure to atmospheric moisture to form elastomeric mastic.
Windshield PU Sealant has excellently water-proof, high bonding strength, oil resistant, aging resistant, salt fog resistant, and can bear long time vibration.
PU Sealant offers excellent adhesion on glass and metal, it is most suitable for bonding windshield in the automotive industry.
Features &Benefits:
• Thixotropic ,no sag.
• Non-corrosion to substrates;
• High modulus & tensile strength
• Excellent adhesion on glass and metal surface
• Outstanding durability
• Permanently flexible
• Paint-spray able Surface
Technical data:
Composition 1-part polyurethane, moisture curing
parking 600 ml sausages, 20 sausages per box.
Consistency Smooth and pasty
Colour Grey,White,Beige and other colors available on request.
Shelf life 12 months from date of production if stored in undamaged original sealed
Skin formation ~ 60 minutes (+23°C / 50% r.h.)
Curing rate ~ 1 mm/24 hours (+23°C / 50% r.h.)
Movement Capability 25%
Specific Gravity 1.3
Joint dimensions Min. width = 10 mm / max. width = 35 mm
Sag flow 0 mm, very good
Service temperature -40°C to +70°C
Tensile Strength 1.2 N/mm² approx.                                                              (ISO 37)
Tear strength ~ 6 N/mm (+23°C / 50% r.h.)
Shore A Hardness ~ 35 after 28 days (+23°C / 50% r.h.)                           (DIN 53505)
Elongation at Break 800% approx.                                                                (DIN 53504)
Elastic Recovery ≥ 85%                                                             (DIN EN ISO 7389 B)
E- Modulus ~ 0.4 N/mm2 at 100% elongation (+23°C / 50% r.h.)
Ambient Air Temperature +5 °C to +40 °C, min. 3 °C above dew point temperature

(*) these values may vary depending on environmental factors such as temperature, moisture, and type of substrates.

How to use:
1. Cleanse with a cleaning agent, to keep the substrate surfaces completely clean
2. Use the sealant after cleaning agent dries, around 1~2mins later. You can use two different cloth, one for cleaning agent, and the other for sealant. (Notice that the two
    can’t be mixed use together, and the second cloth will be better purified cotton and no picking.)
3. For better appearance, cover outside of joint areas with masking taps before application.
4. Cut nozzle to desired size and extrude sealant to joint areas. Tool immediately after sealant application, make it smooth and remove masking tape before sealant skins.
Package and storage:
• 300ml/600ml/pc, 24pcs/carton,20pcs/carton.
• Shelf life:12 months

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