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Bosch Bostik Pro FP403 Fireseal Hybrid Sealant 290ml Grey

4.3 (20 reviews)
SKU: 240609120342005 EAN: 5010591014121

Compare 1 price for Bosch Bostik Pro FP403 Fireseal Hybrid Sealant 290ml Grey — from £9.19 across 1 UK seller including Screwfix.

£9.19 7h ago
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• +/- 25% flexibility • Fire resistant (4 hours)\t • High modulus\t • High sound insulation\t • UV and weather resistant • Interior and exterior use BOSTIK PRO FP403 FIRESEAL POLYMER SEALANT is a one-component, fire resistant hybrid sealant. This white fireproof sealant is suitable for fire resistant sealing of linear joints for up to 4 hours and offers up to 25% movement capability. Fire rated to EN 1366-4, the high modulus FP403 FIRESEAL can be applied in both vertical and horizontal joints and also offers excellent sound insulation. An MS polymer sealant, it is suitable for sealing walls, floors, ceilings or metal frames, and is also certified for all metal stud (gypsum) connections. It''s GEV EMICODE EC1 PLUS certified for very low emissions, is UV and weather resistant, and is supplied in a post-consumer recycled (PCR) cartridge. • GEV-EMICODE EC1 PLUS certified - very low emissions • Fire rated to EN 1366-4: Up to 4 hours • EN 13501-1: Class B-s1,d0 • EN 1634-3: Sa and Class S200 • Post-consumer recycled (PCR) cartridge
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Customer Reviews 20

4.3
20 reviews
5 star
15
4 star
1
3 star
1
2 star
0
1 star
3
Rubbish
1.0
February 15, 2026
Rahhah

Absolutely rubbish, I doubt it any other reviewers have actually seen it perform in a fire situation but I have & it failed miserably only resits 60 seconds then combusts, I think regular silicone would last longer.

Seems to do the job
4.0
November 15, 2025
Ashbourne diy Verified Purchase

Easy to apply seems to be working easy to get into hard to reach areas would use again

Excellent product.
5.0
December 21, 2024
Michael Hind Verified Purchase

Brilliant sealant, excellent quality, great value for money. Perfect for sealing my new log burner. Thoroughly recommended.

works well
5.0
October 15, 2024
Lord Jeavons Verified Purchase

good item . perfect for sealing flue easy to use 5*

Bostik pro
5.0
October 4, 2024
Kazb Verified Purchase

Very good product drys quite quickly reasonable priced

Exterior grade but scrubs off with lots of fairy and hot water
5.0
August 19, 2024
robisurf Verified Purchase

Used to seal gaps between 15mm (1 hour) Fire Board MR. 16 out of 32 sheets done and I think I need a lot more of this.

Cooker sealent
5.0
August 8, 2024
Andy purcell Verified Purchase

Great for fitting my new cooker hob great value would use again

Fire sealant
1.0
March 17, 2024
Hugo Boss Verified Purchase

Really disappointing as did not prove fire resistant in practice when used to secure fire bricks to the back of my logburner

Good value
5.0
February 20, 2024
Fabe Verified Purchase

Does what it says, good quality mastic, good consistency.

Mediocre
3.0
February 7, 2024
DIYidiot Verified Purchase

Remains slightly tacky even after curing. No production or expiry date on the tube.

Nick and tacky thick enough to give a good finish
5.0
September 16, 2023
wotnot Verified Purchase

Used to seal around a fire hearth. Nice and tacky and fairly thick so easy to finish.

Fireseal Sealant
5.0
July 20, 2023
David from Amersham Verified Purchase

Excellent product for sealing a fire-rated loft hatch

Great for my vehicle diesel heater.
5.0
May 7, 2023
2hvpfqp4fuv4vuufr7ncbxkdj Verified Purchase

Very easy to apply seems very good as a product would buy again.

Great for flooring
5.0
April 22, 2023
MattPlum Verified Purchase

Used to seal Vinyl click flooring around the edges. Easy to tool and cured neatly

Good sealant
5.0
March 27, 2023
Paddy Davo Verified Purchase

Does the job, is a sealant NOT an adhesive ! Used to create seal between flue and burner in mancave.

1.0
December 9, 2022
Pedro22 Verified Purchase
Pan handle.
5.0
December 6, 2022
Jupeter Verified Purchase

Pan handle heatsealed perfectly. Thank you.

5.0
November 30, 2022
lv8ckiuqrh958xvnf9qupp8sb Verified Purchase
Perfect
5.0
November 12, 2022
Jenna 50 Verified Purchase

Perfect for sealin gthe top of our stove

5.0
October 17, 2022
dhn4vba79m20jtmfyhjfuckt3 Verified Purchase
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