illbruck FM330 Pro Foam Airseal


Single component, polyurethane foam for airtight perimeter sealing. A high movement capability of 50% ensures that integrity of a seal is maintained during any movement and settlement.

The foam is permanently soft and flexible, and accommodates joint movement, and also provides driving rain resistance of 600 Pa. illbruck FM330 is suitable for sealing:

  • Door and window frames.
  • Top of wall joints.
  • Beam to roof joints.
  • Wall to roof joints.
  • Service penetrations.

When installed in areas shielded from UV the foam does not require a sealant top coat.


  • Fire: Class B3 to DIN 4102-1.
  • Curing system: Moisture curing.
  • Recommended application temperature: +5 to +30ºC.
  • Airtightness: 0.1m³/h at 10 Pa.
  • Weathertightness: 600 Pa.
  • Thermal conductivity: 0.036 W/m.K.
  • Tack-free time: Ten minutes.
  • Cutting time: 45 minutes.
  • Movement capability: 50%.
  • Sound insulation: Up to 60 dB.

General information

Uniclass 2015

Pr_30_31_76_66 Polyurethane (PUR) expanding foam fillersPrimary


L10/75 Sealant joints

L10/810 Sealant joints

Specification data - Polyurethane (PUR) expanding foam fillers

Product Reference

illbruck FM330 Pro Foam Airseal

Standard product features