Acoustic Sealant

Oscar Acoustics now has its own Intumescent Acoustic Sealant called Oscar Seal to complement its ever growing range of soundproofing and reverberation control products.

Intumescent Acoustic Sealant

Oscar Seal intumescent acoustic sealant is a high density, flexible, paintable Halogen free sealant that provides a 4 hour fire barrier combined with excellent sound damping properties, making it ideal for sealing irregular or uneven gaps around service penetrations, door casings and sills, sealing fire protection boards and partitioning, or use with our Oscar Iso-Mount space saving soundproofing system and our heavy duty SonaCel soundproofing system. 

Now you can purchase all your acoustic needs in one place from the acoustic experts with over 30 years’ experience.

  • SonaCel system - Ultra high performance soundproof system for celings & walls.
  • Oscar Seal Acoustic Sealant - High performance acoustic sealant with fire rating.
  • Celbar - Recycled acoustic thermal loose void fill.
  • Oscar Foam - Acoustic fire rated seal to block noise vibration path into new soundproof walls & ceilings.

Purchase Oscar Seal from our on-line shop.

Acoustic Sealant

Acoustic Sealant


For more information or to Request a brochure on Acoustic Sealant, call us on 01474 854902 or use our Enquiry Form

Acoustic Sealant Technical Specification

Oscar Seal Intumescent Acoustic Sealant

This acrylic intumescent acoustic sealant is a ready to use sealant that is ideal for sealing uneven or irregular gaps around service penetrations, sills, door casings also for sealing fire protection boards and partitioning.  Use to seal low movement construction joints where fire rating is required.   Can be used to seal joints up to 35mm wide for excellent building acoustics

Directions for use of Acoustic Sealant

Surfaces to be sealed with acrylic intumescent acoustic sealant must be clean, dry and free from dust, dirt, frost, grease and other contamination. Cut both the cartridge tip and applicator nozzle to the required diameter and angle, screw nozzle onto cartridge.  Apply sealant with applicator gun ensuring good surface contact is achieved by forcing sealant into the joint to be sealed. If necessary, tool within 5 minutes of application using a spatula dipped in soapy water, apply sufficient pressure to ensure good contact of the sealant against the joint surfaces.  Clean tools with water immediately after use.  Wash hands after use.

Test data & Classification of Acoustic Sealant
Tested independently to current specification BS EN 1366 Part 4
Also complies with previous test BS 476 Parts 20
Classification : ISO 11600 – 12.5P
Acoustic sealant properties – Tested to BS EN ISO 140-3:1995
Test report Nos. 125-76, 77,79-81

Storage of Acoustic Sealant

Store Oscar Seal intumescent acoustic sealant in a cool dry environment, product can be stored for at least 18 months from its production date in original unopened container, at temperatures between +2C and +30C. Do not allow to freeze.

Coverage of Acoustic Sealant

One Cartridge of Oscar Seal acrylic intumescent acoustic sealant contains sufficient material to seal 4 metres of a 12mm x 6mm joint.

Acoustic Sealant Limitations

Oscar Seal acoustic sealant is not be used in applications subject to permanent water immersion.  It is always the user’s responsibility to determine suitability of use.  It is not recommended for use in areas subject to abrasion.

Acoustic Sealant Health & Safety

Avoid contact with skin and eyes.  In case of contact with eyes, flush immediately with water and seek medical advice. Wear suitable protective clothing and gloves.  Keep out of reach of children.  Do not ingest.


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