Astro HPE Sealant (310ml Cartridge) Grey (12 Per Box)

Tax included.

Key Features

  • 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.
  • 12 Per Box


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 Reference: 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.

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.