weberseal PU
weberseal PU is a one part, moisture curing elastic joint sealant.
Used as a general purpose building construction sealant for
sealing joints
Material type : Acrylic polymer
Specific gravity : 1.7 kg./litre
Skinning time : ~ 10 minutes (+23 ํC / 50% RH)
Curing rate : ~ 2 mm/24h (+23 ํC / 50% RH)
Sag flow : Non sag
Movement capability : ± 10%
Temperature resistance : -20 ํC to +80 ํC
Extrusion rate : 20-80 g./10 sec
Shore a hardness : 40-60 after 28 days (+23 ํC / 50% RH)
E-Modulus : ~ 0.5 N/ mm2 at 100% elongation
Elongation at break : ~ 80% (+23 ํC / 50% RH)
Elastic recovery : > 10% (+23 ํC / 50% RH)
Fungus and algae resistance : Pass
Shrinkage : Approximately 15%
• Excellent adhesion to most substrates
• Weather resistance, excellent aging resistance
• Movements capability of ±50%
• High tear strength
• One component, excellent workability
• Can be painted over
• weberseal PU cannot be used as a glazing sealant
• Do not use weberseal PU on bituminous substrates, natural rubber,
EPDM rubber or on building materials which might bleed oils,
plasticizers or solvents which could attack the sealant
• Colour change may occur in time because of UV exposure,
but this has no effect on the mechanical properties of the
cured product
• The adhesion is low on PE, PP, PTFE
• Not resistant to organic solvents, organic acids,
high concentrated alkalis/acids
