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Low Expansion Foam

Selsil Low Expansion PU Foam is polyurethane-based, moisture-cured, one-component filling and insulation material.

Properties

  • One-component
  • Moisture cured
  • Excellent adhesion to most construction materials such as wood, concrete, tile, metal, and aluminum (except polyethylene, silicone and Teflon)
  • Thermal and acoustic insulation
  • Cuttable and paintable after curing
  • Only expands enough to generate an effective seal
  • When properly applied, proven to not distort or bow window and door frames
  • Forms durable, airtight bond to vinyl, wood and metal surfaces
  • Expands to take the shape of cracks and voids
  • Does not contain CFC and HCFC gases

WHERE CAN I GET?

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PRODUCT FEATURES
Characteristics Data Method
Chemical Base Polyurethane
Curing Mechanism Atmospheric Moisture
Color Pale Yellow
Joint Foam Density 15 ± 3 kg/m³ SEL DM 31
Foam Yield (900 g) 12.66 m (3x10 cm joint)
42.21 m (3x3 cm joint)
Yield (900 g) 600–700 g: 25–35 L
700–800 g: 35–45 L
800–900 g: 40–50 L		 SEL DM 59
Free Foamed Density 16 ± 3 kg/m³
Dimensional Stability <5 SEL DM 60
Curing Pressure 4.93 kPa SEL DM 129
Post Expansion 40–50% SEL DM 128
Cutting Time 18–21 min SEL DM 35
Tack Free Time 5–7 min SEL DM 61
Sagging Non Sag @ 5 cm joint SEL DM 37
Compression Strength 35.68 kPa SEL DM 111
Tensile Strength 67.66 kPa SEL DM 110
Shear Strength 37.66 kPa SEL DM 113
Bonding Strength 7.64 MPa SEL DM 141
Application Temperature +5 °C to +35 °C
Temperature Resistance (cured) -30 °C to +80 °C

Application Area

  • Assembling and sealing of windows and door frames
  • Filling of cavities
  • Sealing of openings in all roof constructions
  • Thermal and acoustic insulation

Limitations

  • Not suitable for PE, PP, PC, PMMA, PTFE, soft plastics, neoprene and bituminous substrates
  • Do not use in applications where continuous water immersion is possible
  • Should not be exposed to UV and be covered with paint or plaster

Instructions

The application surface must be solid, clean, dry and free of dust, oil and grease. Surfaces must be moisturized before application. The ideal can temperature is 20–25°C. Let cold cans warm to room temperature (about 20 minutes). Shake the can vigorously about 30 times before use.

Cleaning

Fresh foam can be cleaned with Selsil Foam Cleaner before curing. Cured foam can only be removed mechanically with a knife or spatula.

Packaging

750 ml x 12 per box

Shelf Life

12 months at +5°C to +25°C in a cool, dry place

Caution

  • Keep out of reach of children
  • Avoid contact with skin and eyes. Use gloves
  • Avoid freezing, direct sunlight, and temperatures above 50°C
  • Apply in well-ventilated areas
  • Do not inhale vapors
  • No smoking
  • Keep away from open flame

Health and Safety

For safe handling, storage, and disposal of this product, refer to the most recent Material Safety Data Sheet (MSDS).

Disclaimer

Information is based on scientific and practical knowledge. Selsil is not liable for consequences of improper use. Formulations are subject to change. Users must verify product suitability and follow usage instructions. Selsil is not responsible for failures due to application methods, storage, or transportation.

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