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U-Seal 550FC

Fast-curing one-part polyurethane multipurpose adhesive sealant PVC- and smell- free

U-Seal 550FC is a one-component, gun-grade, non-sag polyurethane high modulus multipurpose adhesive and sealant with excellent thixotropy. It cures rapidly under the influence of atmospheric moisture to form a high performance compound with permanent elasticity. Thanks to its special formulation, it is completely smell-free. The product can be easily brushed and tooled in order to match the original brush mark and give first equipment appearance to the seam.
  • Non-sag, exceptional thixotropy and short cut-off string
  • Easy to gun with excellent tooling consistency
  • Very fast curing through volume
  • Over-paintable in a short time with many water and solvent based paints (preliminary tests recommended)
  • Bonds and seals at the same time
  • Permanently elastic over a wide range of temperatures
  • Non-sticky / does not pick up dirt
  • Performant adhesion on metal and plastic materials.
  • Non-staining
  • Allows equalised stress transfer due to permanent elasticity.
  • Good resistance to ageing and weathering
Appearance
Non-sag thixotropic paste
Colors
White, grey, black
Chemical nature
Polyurethane
Curing Mechanism
Moisture-curing
Curing through volume [mm]
(after 1 day at 23°C and 50% RH)
ca. 3,0
Shore A hardness
(DIN 53505)
ca. 47
Density [g/cm3]
(NPT Method 06)
ca. 1,41
Tack-free time [min]
(NPT Method 17) (23°C and 50% RH)
ca. 45
Elastic modulus at 100% [N/mm2 ]
(ISO 37 DIN 53504)
ca. 2,0
Tensile strength [N/mm2 ]
(ISO 37 DIN 53504)
ca. 3,0
Elongation [%]
(ISO 37 DIN 53504)
ca. 550
Application temperature [°C]
from +5 to +40
Temperature Resistance [°C]
-40/+90

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