Fire Stop Products | Astro EJ Seal

>Trade Name: Astro EJ Seal

Intumescent Expansion Joint Seals

Email to a Friend Share this product page from Astroflame on Facebook Share this product page from Astroflame on Twitter Share this product page from Astroflame on Google+ Share this product page from Astroflame on LinkedIn Share this product page from Astroflame on Pinterest

View All Fire Stopping Products Download The Fire Stopping Brochure

Astro EJ Seal
full size product image from Astroflame

Intumescent Expansion Joint Seals

> Quick Overview


Telephone Astroflame 01329 844 500

Email Astroflame

PDF Data Sheets Download PDF Data Sheets

Sign Up for Updates & Offers

For in-stock items orders received before 2pm (Monday-Friday) are generally dispatched for delivery on the following working day (Monday-Friday).

> Product Description

Astro EJ Seal is an intumescent thermoplastic filled with flame retardants and binders which provide a high performance volume expansion and pressure seal situated in an elastomeric, acoustic rated foam which allows for high movement. They can be used in:

> Properties and Specification

Colour Black
Density 75Kg/m3
Fire Resistance Tested in accordance with BS 476 Part 20: 1987
Acoustic Performance Acoustic Reduction up to 8Rw, 18DnTW
Air Permeability 200Pa EN 1026 - 100Pa 1581/1590 m3/h/m2
Expansion Ratio 1:20 Times
Maximum Size of Apperture 150mm
Seal Length 1000mm
Movement Capability +/- 25%
Once compressed EJ Seal will return to original size

> Product Availability

Supplied in metre lengths. When ordering please state product code and number of metre lengths required.

2 Hour Fire Rating

Product Code Product Description Gap Size Size Integrity
AFEJ10/120 Astro EJ Seal 10mm Up to 10mm 12x12mm 120mins
AFEJ20/120 Astro EJ Seal 20mm 11 - 20mm 29x12mm 120mins
AFEJ25/120 Astro EJ Seal 25mm 21 - 25mm 32x20mm 120mins
AFEJ35/120 Astro EJ Seal 35mm 26 - 35mm 53x20mm 120mins
AFEJ50/120 Astro EJ Seal 50mm 36 - 50mm 61x35mm 120mins
AFEJ60/120 Astro EJ Seal 60mm 51 - 65mm 85x40mm 120mins
AFEJ75/120 Astro EJ Seal 75mm 66 - 75mm 90x50mm 120mins
AFEJ100/120 Astro EJ Seal 100mm 76 - 100mm 126x100mm 120mins
AFEJ120/120 Astro EJ Seal 120mm 101 - 120mm 147x125mm 120mins
AFEJ150/120 Astro EJ Seal 150mm 121 - 150mm 170x100mm 120mins

> To Order & Specify

Please contact us and quote the following information - Please quote- Quantity / Product Code / Product Description / Size
Typical wording- 10 / AFEJ10/120 / Astro EJ Seal 10mm 120 min Rated / 12x12mm

>> Tel: 01329 844 500 or >> Email:

> Installation

We have technical representatives who provide assistance in the selection and specification of the products on this site and should be consulted for exact installation and product suitability. Ensure an early engagement with ourselves, designers, main contractor and specialist installers before any installation. Other trades and/or manufacturers may need to be consulted. For in-depth information, specification and technical advice please call our Head Office on tel 01329 844 500 or email

> Maintenance

All interested parties, designer, specifier, main contractor and specialist installers should provide access to allow the fire stopping seals to be regularly inspected and maintained, as well as records kept of such maintenance at minimum periods of 12 months, as required by the Regulatory Reform Order, and repaired if necessary. Reference should be made to ASFP TGD 17 – Code of Practice for the Installation and Inspection of Fire Stopping.

> Competency

It is vital that those entrusted to design or install a fire stopping product have the necessary levels of competence to undertake the task professionally and thoroughly. The level of competency required will be commensurate with the expected complexity of the building. All designers must eliminate, reduce or control foreseeable risks that may arise during installation, construction or maintenance when preparing or modifying designs. Clients should ensure that the principal designer and principal contractor carry out their duties under CDM regulations. The ASFP foundation course in passive fire protection provides essential knowledge as part of demonstrating competency and understanding in this key fire protection specialism.

> Additional Notes

For further information on installation requirements please refer to the wall/floor specification to ensure the compatibility of this product, if in doubt please contact the technical team with the wall/floor specification on: tel 01329 844 500 or email

> Health and Safety

The product does not present any known health hazards during or after installation. Normal good industrial and personal hygiene practices should be observed. For further information on health and safety requirements please contact the technical team on: tel 01329 844 500 or email

> Data Sheet Downloads

Download and review the following available data sheets for this product.

Key Information:
  • PDS's are Product Data Sheets
  • SDS's are Safety Data Sheets
  • TDS's are Technical Data Sheets
  • INT's are Install Data Sheets
  • VID's are Video Files
  • DoP's are Declaration of Performance
  • CoC's are Certificate of Constancy of Performance
  • ETA's are European Technical Assessment Sheet
  • UL Documentation are UL - EU Certificate

> Delivery/Returns

For in-stock items orders received before 2pm (Monday-Friday) are generally dispatched for delivery on the following working day (Monday-Friday). All dates quoted for despatch are estimates only and are not guaranteed. We will endeavour to meet these dates but shall have no liability for any delay in despatch or delivery or any damage or loss occasioned thereby. We may deliver products pursuant to any order by instalments. If we are unable to deliver the goods for any reason,you will be contacted and you will not be obliged to pay for the goods which have not been delivered, you also have the option to cancel the goods that have been delivered, however we shall not be liable for any loss of income or profit which may have been caused by the delay or non delivery of goods.

For information about our returns policy please click here.

> Ask a Question

If you've got a question about this product or need some technical help get in touch with the Astroflame sales or technical team to discuss your requirements today. We are open Monday to Friday 8:00am to 5:30pm. You can always contact us on the following:

T: 01329 844 500


Web Page Last Modified: 12th February 2024

Data Sheets Downloads

or click "x" to close this box.