Technical Characteristics :Â
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Base  Polyurethane
Consistency  Stable Paste
Curing System  Moisture Cure Â
Skin formation  Ca. 15 min. (20°C/65% R.H.)
Curing Rate  15mm/24h (20°C/65% R.H.)
Hardness  25±5 Shore A
Shrinkage  < 10%
Specific Gravity  128g/mL
Temperature Resistance  -30°C to +90°C
Elastical Recovery  >80%
Maximum allowed Distortion  +/- 25%
Elasticity Modulus 100%  04N/mm²  (DIN 53504)
Maximum Tension  15 – 18 N/mm²  (DIN 53504)
Elongation at Break  > 1000%  (DIN 53504)
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Product:
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Soudaflex 25LM is a high quality one component polyurethane sealant suitable for a wide range of sealing and bonding applications
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Characteristics:
·        Very easy application Â
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·        Stays elastic after curing Â
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·        Very good adhesion on many materials Â
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·        Excellent resistance to many chemicals Â
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·        Low to medium modulus for expansion joints Â
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·        Especially developed for concrete applications Â
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Applications:
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·        All sealing and bonding applications in the building industry Â
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·        Connection joints between brickwork and door-and windowframes
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·        Expansion joints between different construction materials
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·        All types of joints with large movement.
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Shelflife:
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12 months in unopened packaging in a cool and dry storage place at temperatures between +5 degreeC and +25degreeC
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 Surfaces:
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Type: all usual building surfaces most metals polyesters and many plastics – not on glass
State of Surface: clean dry free of dust and grease
Preparation:
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·        In very warm and moist climates we recommend the use of Primer 100 for applications on porous surfaces
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·        No primer required for non porous surfaces.
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·        Non porous surfaces may be activated by Surface Activator
We recommend a preliminary compatibility test.
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Joint Size:
Minimum Width:Â 5mm
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Maximum Width:Â Â 30mm (in joints)
Minimum Depth: 5mm (in joints)
Recommendation:
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·        Joints of 12mm or less : depth = width
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·        Joints of more than 12mm : 2xdepth=width
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Application:
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Method:Â caulking gun
Application temperature: +1°C to +30°C
Clean: with white spirit immediately after use Finishing: with a soapy solution before skinning Repair: with the same material
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 Health- and Safety Recommendation:
Apply the usual industrial hygiene.
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Precautions:
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If Soudaflex 25LM is used in direct contact or in close proximity with any other sealant or elastomer a compatibility test must be conducted by user prior to acceptance. This product is not compatible with oxime containing silicone sealants.
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Technical Norms/Conforms with:
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–Â Â Â Â U.S.: ASTM C920 type S grade NS class 25
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Pretest for Adhesion:
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Pre-testing for adhesion is intended to eliminate potential field problems. This testing will aid in determining the proper surface preparation method.
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Remarks / Application Limitations
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–Â Â Â Â Â Â Â Â Â When painted with oxidative drying paints disturbances in the drying of the paints may occur.
–Â Â Â Â Â Â Â Â Â Soudaflex 25LM must not be applied to frost-bearing surfaces or if temperature will be below freezing
–Â Â Â Â Â Â Â Â Â The suitability of this product for each intended use must be determined by the purchaser prior to acceptance
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