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Bosch Bostik Pro FP403 Fireseal Hybrid Sealant 290ml White

4.9 (10 reviews)
SKU: 240609120507005 EAN: 5010591014084

Compare 2 prices for Bosch Bostik Pro FP403 Fireseal Hybrid Sealant 290ml White — from £9.19 to £9.99 across 2 UK sellers including Screwfix, Toolstation. Save up to £0.80 (8%).

£9.19 7h ago
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Compare Prices from 2 Sellers

Prices updated 20 Apr 2026
2
Toolstation
£9.99 +£0.80
3h
#2 Toolstation
3h ago
£9.99 +£0.80
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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 10

4.9
10 reviews
5 star
9
4 star
1
3 star
0
2 star
0
1 star
0
one good sealer
5.0
January 28, 2025
den the man Verified Purchase

went on well a good product and good price went on well would buy again

Good product
5.0
January 12, 2025
Chappers21 Verified Purchase

Good quality adhesive, used to seal an air vent behind a multi-stove.

Withstands high and humid heat
5.0
November 5, 2024
RR007 Verified Purchase

Used this to seal my wood steamer box and gas stove boiler. Cures well and is coping with lots of use.

Same as the grey only white.
5.0
August 19, 2024
robisurf Verified Purchase

See my 5* review of the grey stuff. (Only bought this by miss-clicking.)
Sticks well. We brush off the dust and it seem to stick to the glass fibre reinforcement. Bonds well to the Fire Board and to the Cemsix.
Hopefully we never get to know if it really works in a fire.

Seal around fire surround
5.0
July 23, 2024
DavyC Verified Purchase

Putting in a fire surround so used cement board and steel studwork and wanted something to seal around. This did the job great

bostik sealant
5.0
February 20, 2024
chris fernando Verified Purchase

very good, seals nicely, I used to for sealing of a ducting system ,was installing.

Good item
5.0
March 22, 2023
Jon58 Verified Purchase

Wry good item will buy again if I need it reasonably priced

Frame sealant
4.0
January 30, 2023
Kevin Cluer Verified Purchase

Clean finish, would advise having some soapy water to smooth out sealant, and rags ready for cleaning your hands

5.0
November 21, 2022
ptni9z2f3ldv46misxojmgnwa Verified Purchase
5.0
October 28, 2022
2jub06mhlun3peeldtde0feu4 Verified Purchase
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