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High Pressure Expansion Sealant - 310ml (Single Cartridge)

Product Code: AFHPESG

A high pressure intumescent sealant for combustible Pipes up to 125mm diameter | CE Marked | ULEU Accreditation | 310ml cartridge, Grey colour

£5.11 (ex. VAT)
For in stock items Order by 2pm, Many delivery options available!


Key Points:

  • CE Marked.
  • ULEU Accreditation.
  • Suitable for use in rigid wall and floors, flexible wall and within batts wall and floor.
  • Large service openings up to 300 x 100mm.
  • Tested in accordance with EN 1366-3 : 2009.
  • Metallic Pipes, Cables, Cable Bunches (inc Telecommunication), Cable Trays and Cable Ladders, please refer to the test certification.
  • Combustible Pipes up to 125mm dia - PVC, PE, PP, ABS and PEX, please refer to the test certification.
  • Causes no known effects to plastic pipes, plastic cables, sheathing or metallic components.
  • Easy clean up with water and is odourless.
  • Smoke, gas and air tight.
  • High Expansion Ratio.
  • Mould Resistant.


Astro HPE Sealant is an acrylic based graphite sealant used to reinstate the fire resistance performance of wall and floor constructions where they have been provided for the penetration of single or multiple services, to form penetration seals where gaps are present.

Astro HPE Sealant expands upon contact with heat, also known as intumescent or reactive material Astro HPE Sealant is supplied within 310ml cartridges. The sealant is gunned or trowelled into the annular space in or between the separating element/elements to a specific depth utilising backing materials.

*For specific details please refer to the test certification.


Description Result Test Standards
Density Ca. 1.23 - 1.33g/cm3 ISO 2811-1:2011
Shore Hardness A 68 ISO 7619-1:2010
Colour Grey
Application Temperature +5 °C to 35 °C
Expansion Onset Temperature Ca. 180 °C
Expansion Up to 20 times EOTA TR 024
Expansion Pressure 7 bar EOTA TR 024
Skin Time 15 minutes @ 25 °C/ 50%RH EN1366-3
Cure Time 1.7mm per 24hrs
Shelf Life 18 months unopened
pH 6 - 9
Fire Resistance EI 120 EN1366-3 and EN1366-4
Insulation 120 EN 1366-3
Air Permeability 600Pa - 100Pa 11.1/16.7 m3/h/m2 EN1026
Classification EN 13501-2, ISO 11600
Acoustics Rw (C;Ctr) : 52 (-1;-6) dB EN ISO 10140-2:2010
Durability Services Type Z, intended for use in internal conditions
BREEAM International Compliant GN22: BREEAM Recognised Schemes for VOC Emissions from Building Products
Lubrizol Test Method Pass NSF Refernece: P0128, P3111, P3147
Expected Shelf Life At least 12 months Stored in accordance with packaging instructions

  • Available in 310ml cartridge for standard application guns. Grey colour only.


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: +(0)1329 841416 or email


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.


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:

Please refer to the ETA/UL-EU sheet for fields of application for this product. For further information on installation requirements please refer to the manufacturer of the services and the wall/floor specification to ensure the compatibility of this product, if in doubt please contact the technical team with services and wall/floor specification on Tel: +(0)1329 841416 or email

Download and review any of the following information:

Certification/Fire Test Reports:

CE InformationCE Marked Documents
'DoP's are 'Declaration of Performance'
'CoC's are 'Certificate of Constancy of Performance'
'TDS' are 'Technical Data Sheet'
'ETA's' are 'European Technical Assessment Sheet'

CE Information 'UL Documentation' are 'UL - EU Certificate'



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