Astroflame Passive Fire Protection Products

Trade Name: Astro PFP FR Acrylic

Fire Rated Mastic


High end formula, certified worldwide.

Classified for fire sealing all types of construction and building service penetrations.

Very high sound insulation.

Low emissions - environmentally and user friendly.

Simple to apply with a smooth surface finish.

Permanently flexible - will accommodate movement up to 12.5%.

No priming necessary for application to most materials.

Suitable for most surfaces, included concrete, masonry, steel, gypsum, glass, plastics and most non-porous surfaces.

Hardens quickly, tack free after 1 hour (the fire performance specification of the joint filler has been derived when the joint filler has been let to cure for a month).

18 months storage time (under correct conditions).

30 years working life.

PFP FR Acrylic - Fire Rated Mastic

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>> Call us to order: 01329 844 500

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CE Marked Astro PFP FR Acrylic


CE Label Intumescent Fire Rated MasticDesigned to prevent the spread of fire and smoke through joints and openings in fire rated walls and floors (including openings formed around building service penetrations); the Astro PFP FR Acrylic will also maintain the acoustic design performance.

When subjected to atmospheric conditions, the sealant cures however, it will retain a degree of elasticity for joint movement. Under fire exposure, The Astro PFP FR Acrylic creates a robust fire seal by the formation of a durable intumescent char.

The Astro PFP FR Acrylic can be used with a suitable filling material i.e. stone wool or Astro PFP FR backing material in order to secure correct width to depth ratio, and to reduce the shrinking of the sealant during curing. Minimum depth and maximum width of the joints are included in the installation instructions. Thermal activation takes place at approx. 180°C when the material will expand (intumesce) and prevent the passage of fire and smoke for periods up to and beyond 4 hours.

When testing pipes, one can choose not to cap (or close) the pipe, or cap the pipe inside the furnace, or outside the furnace, or on both sides. The configuration chosen depends on the intended application of the pipe and/or the installation environment.

The code defining if a pipe is capped is stated after the fire classification. For instance, EI 60 C/U which means the pipe was capped inside the furnace, and uncapped outside the furnace. The test configuration defines the approvals possible.

Our engineering judgment based on EN 1366-3:2009 are:

Intended use of pipe

Pipe end condition4

Rainwater pipe, plastic

At drainage


Not at drainage


Drainage or sewage pipe, plastic

Ventilated drain


Unventilated drain


Drain w/water trap


Not at drainage


Pipe in closed circuit (water, gas, air, electricity etc.)

C/C2) 3)

Flue gas recovery system pipe, plastic


Pipe with open ends and = 50cm length on both sides, plastic


Pipe supported by suspension system, metal

Fire rated support


Non-fire rated


Waste disposal shaft pipe, metal


1) Suggested in EN 1366-3:2009. 2) Astroflames's judgment based on tests. 3) Metal pipes should have fire rated support. 4) U/U classified fire seals cover C/U, U/C and C/C. C/U classified fire seals cover U/C and C/C. U/C classified fire seals cover C/C.

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

Technical Data


Ready for use, acrylic based filler

Specific gravity

1.56 - 1.60.

Flash point


Reaction to fire

Class D-s1, d1

Expansion in fire

1 : 2-3


Max. 75 minutes

Film forming

Max. 25 minutes

Totally hardened

3 to 5 days depending on thickness and temperature


12.5% according to ISO 11600


Z2 intended for use in internal conditions with humidity classes other than Z1, excluding temperatures below 0°C


Use category IA1, S/W3

Thermal conduct.

0.845 W/mK (+/- 3%) @ 20mm depth


18 months stored in unopened cartridges. To be stored in temperatures between 10°C and 30°C

Working life

30 years

Service temp.

-20 to +70°C

Application temp.

+5 to +30°C


Suitable for use with most materials, but should not be used In direct contact with bituminous materials


Should not be used in permanently damp areas or in joints with high movement


CE-marked - Sealant for fire rated joints and penetrations class EI 240

Standard colours

Standard white

Colour codes

White: RAL 9002

This Technical Data Sheet and the Installation Instructions are based on the product's European Technical Assessment issued in accordance with regulation (EU) No 305/2011 on the basis of EAD 350454-00-1104, September 2017.

Product Availability

Product Code

Product Description




Astro PFP FR Acrylic - Cartridges


310 ml

To Order & Specify

Please contact us and quote the following information - Please quote- Quantity / Trade name / Product Ref / Size
Typical example:- 25 / AFPFPACW / Astro PFP FR Acrylic - Cartridges / 310 ml

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


For further information on installation requirements please review the installation video or contact the technical team 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

Web Page

Astroflame (Fire Seals) Ltd. Intumescent House
Unit 8, The I.O Centre, Stephenson Road, Segensworth
Fareham, England PO15 5RU
© Copyright 2020 Astroflame is a registered Trade Mark. All rights reserved



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