FM330 Pro Foam Air Seal

One part, rapid, moisture-curing expanding polyurethane foam which is gun applied and has excellent elasticity, air tightness and acoustic properties. Excellent adhesion to brick, block, stone, plaster and cementitious materials as well as wood, metal and a variety of plastics. The low post-expansion facilitates greater control during application.
FM330 is ideal for use as an air tight gap filler for general construction joints including where movement is expected to occur.
It is suitable for applications such as airtight window and door perimeter joint seals, sealing floor to wall and wall to ceiling joints and pipe & service penetrations.

Key benefits

  • A high performance PU foam with excellent acoustic and airtight performance
  • Airtight formulation – tested to EN 12114
  • Acoustic dampening – up to 63 dB joint insulation index
  • Elastic performance – up to 50% movement capability ensures integrity of the seal in the event of movement
  • Sub-zero formulation – can still be used at temperatures as low as -3°C
  • Low post-expansion facilitates more accurate application depth


750 ml pressurised canister (12 per carton)

Technical data

PropertyTest methodResult
CompositionPolyurethane Foam
Fire ClassificationDIN 4102-1B3
Yield 34 litres
Water AbsorptionEN 16090.2 kg/m²
DensityLAB 01515 – 25 kg/m3
Tack Free TimeFEICA TM 1014 esant 23°C ir 50% santykinei oro drėgmei10 minutes
Cutting TimeFEICA TM 100545 minutes
Loading Time24 hours
Air TightnessEN 12114< 0.1 m³/(h.m) esant ±1000 Pa
Movement CapabilityFEICA TM 101350%
Compressive Strength (10%)FEICA TM 101111 kPa
Elongation at BreakFEICA TM 101850%
Thermal ConductivityEN 1266736 mW/m.K
Maximum Acoustic RatingEN ISO 140-1 : 2005-0363 dB
Application TemperatureCanister: +5°C to +30°C
Ambient: -3°C to +35°C
Service TemperatureShort Term:  -40°C to +130°C
Long Term:  -40°C to +90°C
StorageStore in shaded dry conditions between +10°C and +25°C.  Store canisters upright. The product is contained in a pressurised container – observe storage instructions and do not apply heat.
Shelf Life15 months when stored as recommended in original unopened containers.