Acoustic Class O Foam

Advanced Seals and Gaskets Ltd stocks and fully converts vast quantities of Class O foam (acoustic foam) (A354).

class o foamClass O Foam (acoustic Foam)

“Class O” is the best building regulations designation for materials that protect from the spread of flames and limits the amount of heat released from the surface during a fire.

Many areas of industry can benefit from Class O Foam, it can be easily cut, shaped, adhesive backed and is Non-irritant whilst being safe and easy to install.

Class O Foam is often referred to as Acoustic Foam, Fireseal, Impregnated Polyurethane, Non-Flammable Acoustic Foam or pyrosorb.

Uses for Class O Foam

Our A354 is Class O accredited and has a magnitude of uses including;

  •          Acoustic enclosures
  •          Air conditioning equipment and duct systems
  •          Acoustic engineering
  •          High risk fire mattresses (prisons)
  •          Acoustic wall panelling
  •          Anechoic chambers
  •      Duct lining
  •      Engine bay compartments
  •      Generator rooms


Properties and format of Class O FoamHVAC Class O Acoustic Foam

Class O foam has the following attributes amongst others;

  •          High resistance to fire
  •          Low smoke emission
  •          High resistance to air erosion
  •          Reduces vibrations
  •          Excellent acoustic properties
  •      Is non-fibrous eliminating the potential health hazards associated with fibrous products


      Class O Foam can be supplied in the many formats detailed above or in sheet or roll format, standard sheet size is 1m x 2m x 100mm thick (without lamination) and in continuous rolls up to and over 10m (thickness dependent).

Help with Class O Foam (acoustic foam)

If you would like to speak to a representative to discuss your specific application or requirements please call our sales office direct on 01384 469100, alternatively you can send an E-mail. Simply click on the link and forward us your details along with your question and we will contact you immediately.

Polyurthan Foam / Class 'O' Foam Specification Sheets

Advanced Seals and Gaskets Ltd

Tel: 01384 252555


ISO 9001

The information presented is based on the present level of knowledge and experience.

All information and recommendations contained in this publication are to the best of our knowledge. Since the conditions of use are beyond our control, users must satisfy themselves that products are suitable for the intended processes and applications.