High Adhesion Strength Polyurethane Sealant521

Moderate elasticity
Waterproofing
Paintable
No primer
Mildew proofing
Testing
Performance
Appearance
Black/White/Gray homogeneous paste
Density(g/cm3)
1.35±0.05
Sagging properties(mm)
0
Elongation at break(%)
≥600
Volatile content(%)
≤4
Stretch modulus (Mpa)
>0.4
Touch dry time(min)
≤180
Elastic recovery rate(%)
≥85
Extrudability (ml/min)
≥80
Pollution properties
Non
Application temperature(°C)
+5~+35
Shelf life(month)
9


Description:
KATER 521 Polyurethane Sealant is one component have excellent elasticity and adhesion strength, self bonding and easily for repairing etc.

Uses:
KATER521 Construction Polyurethane Sealant is for sealing tiles, cracks, sills, skylight, doors, various of marble, ceramic, glass metallic, wood, door, sanitary ware, tap fittings, roofing, wall penetrations, precast panels, and decorative tile lines.


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APPLICATION:

Minimum application temperature: 5°C.
521 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 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 in barrel gun. Screw end cap and nozzle on to barrel gun. Using the trigger extrude the sealant, to stop depress using the catch plate. Apply 521 in a continuous bead using enough pressure to properly fill the gaps.