Fireseal™ Class O Foam

We manufacture a comprehensive selection of Fireseal™ fire retardant foams, non-burning polyurethane and melamine foams and products. All of which meet FMVSS302, UL94 HF1, Class O and FO 36 (Black Pyrosorb, Fireseal™ and Basotect PVC Nitrile) standards. Our Class O Foam can be manufactured with a variety of self-adhesive backings, sizes and densities.

Providing for Other Sectors

While the building and automotive sectors form our largest customer base for fire retardant foams. We also supply a wide range of other sectors, from bedding to industrial machinery and recording studios. But, the potential applications for fire retardant foams are vast. In addition, there are many products which benefit from being produced with fire retardant foams.


Contact Our Conversion Technical Team

The material is normally adhered to the background surface. This is done using a separate adhesive or by means of the optional self adhesive backing. Contact our technical team for a specification sheet on self-adhesive films for properties and limitations.

Additionally, Class 0 Foam can be mechanically fixed (using large headed fixings or spreader washers). Our insulation support pins and non-return washers represent a suitable fixing.

Simplifying Installation

The Class 0 Foam is available with a self-adhesive backing film to simplify installation. Optionally, the product can be supplied with an extensive range of facing materials, typically Foil Faced Acoustic Class 0 Foam and also Black Polyester Film Faced.

An in-house cutting service is available for supply to final sizes/shapes, using a variety of processing techniques. These include die-cutting and CNC cutting. A full ‘kitting’ and packing service is available for OEM supply.

Class O acoustic foams have been widely adopted in the building industry. Specifically, where high performance acoustic foams are required, with superior sound absorbing and non-flammable properties. The exceptional soundproofing properties make it a first choice for reducing noise in any application.

  • Building and construction
  • Automotive and transportation
  • Machinery such as compressors and generators
  • Recording studios
  • Furniture
  • Bedding
  • Ducting– HVAC linings
  • Ceiling tiles
  • Wall panels
  • Suspended sound absorbers

Technical Specification

Colour: Dark Grey
Density (Specific gravity): >90kg/M3
Fire Propagation Index: <12 (BS476 pt 6)
Surface Spread of Flame: Class “1” ( BS476 pt 7)
Building Regs. 1991 (Fire Safety): Class “0”
Operating Temperature: -30 to 100 C
UL 94 Classification: 94V-0 (UL 94)
Surface Burning Behaviour: Class A (ASTM E84-95)
Air Erosion Resistance: (4001 – 60fpm) – Pass (ASTM C1071-91 12.7)
Fungus Resistance Test: Does not support growth (ASTM G 21)
Surface Spread of Flame: Class “1” ( BS476 pt 7)
Building Regs. 1991 (Fire Safety): Class “0”
Operating Temperature: -30 to 100 C
UL 94 Classification: 94V-0 (UL 94)
Surface Burning Behaviour: Class A (ASTM E84-95)

Acoustic Performance

Sound Absorption @ 25mm (Normal Incidence): NRC > 0.40
Sound Absorption @ 25mm (Random Incidence): NRC > 0.50
Sound Absorption @ 50mm (Random Incidence): NRC > 0.78


Thicknesses available are: 25mm, 50mm (special order alternative thickness and cut to drawing available, please call)

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