Mapei Mapeflex Firestop 1200°C High Temperature Sealant Grey 300ml

Product Code: 25153
Mapei Mapeflex Firestop 1200°C High Temperature Sealant Grey 300ml
Product Code: 25153
For rigid seals in voids and joints between materials that come into direct contact with flames or need to withstand temperatures up to 1200°C. Suitable for industrial furnaces, wood burning ovens, barbeques, chimney flues and fireplaces.


  • Odourless
  • Solvent Free
  • Accommodates Movement of
  • Rapid Drying
  • Suitable for Materials in Direct Contact with Flames
  • Ideal for Pre-Manufactured Elements


Covers 3m per 300ml.
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Safety Data Sheet
€13.95 Incl. 20% VAT
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Additional Information
Technical Specification
  • Brand : Mapei
  • Product Height : 230 mm
  • Sealant Adhesive Volume : 300 ml
  • Product Type : 1200°C High Temperature Sealant
  • Model Name : Mapeflex Firestop
  • Total Product Weight : 0.557 kg
  • Model No : 4697091SFX
  • Product Width : 48 mm
  • Colour : Grey
  • Pack Size : 1
  • Product Diameter : 175 mm
  • Manufacturer Guarantee : 5 Year Manufacturer's Guarantee
  • Pieces in Pack/Case : 1
Product Contents
Delivery & Returns


Standard delivery: €15

Free delivery on all orders over €70.00

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Mapei Mapeflex Firestop 1200°C High Temperature Sealant Grey 300ml is rated 3.6666666666666665 out of 5 by 15.
Rated 2 out of 5 by from Not too good Used this to seal drums up in the loft. It came out very lumpy (almost like it had gone off) It didn't cover anywhere near as I thought it would because of this. Yet to see how good the product is hence 2 stars.
Date published: 2016-09-09
Rated 3 out of 5 by from Problem with Application... I have not used the product yet, as my first tube would not extrude out of the nozzle efficiently, instead it started oozing out of the back by the plunger. Wasted 1/3 of a tube trying to push it our the front nozzle - with only a small trace coming out. (i had cut the front nub off correctly, up to the screw fitting for the nozzle) - so took it back to the store and got another - not used the new one yet.
Date published: 2016-08-18
Rated 5 out of 5 by from it WORKS ive brought similar products from other retailers and they don't last long (crack shrink or just fall out ) but this is doing the job great " does what it says on the tin" though its a tube lol
Date published: 2016-03-28
Rated 5 out of 5 by from Easy to buy, easy to use I was searching for this to repair a leaking flue surround, and struggled to find what I needed until I visited the ScrewFix website. This was purchased on line and collected later the same day. I applied it the following day and found it really easy to use. I've only reduced the rating for effectiveness because it hasn't been tested with either a REALLY heavy or prolonged downpour yet!!!
Date published: 2016-01-25
Rated 4 out of 5 by from High Temp Sealant Needed to seal joint in flue from oil boiler as fumes getting in to kitchen. The sealant seemed rather runny as it was applied to the warm flue but quickly dried. So far there is no smell of burnt oil fumes in kitchen, so it has done what I wanted it to do.
Date published: 2015-12-05
Rated 2 out of 5 by from Out of Date After struggling to use a lumpy dry product it became apparent I had been sold a 3 month out of date product.
Date published: 2015-11-13
Rated 1 out of 5 by from Not great Having read the product spec I thought this would be perfect for sealing up around the register plate of my stove and some joints around the cement board surround. I have however found it does go brittle and fall out of the joints after just one hot burn. Perfect if your stove is an ornament, worthless otherwise.
Date published: 2015-02-14
Rated 3 out of 5 by from Sticks well ok so this is expensive for a sealant but it is rated up to 1200 degrees C I used it to build an oven using 12mm cement board for a home made vacuum former, the oven is suspended in the air and this sealant holds the boards in well, the oven is fairly large (833mm x 625mm) and it holds a sheet in that size well so far. when using it with a sealant gun it some times feels like it gets blocked to you put a little more pressure on it and you get a big glob of it come out which is annoying and messy. it would have been nice for it to flow easily out in a controllable bead which it sometimes does.
Date published: 2015-01-16
  • 2016-10-26T08:30CST
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