PU40, mSEAL, Sikaflex etc.

Plevier

Well-Known Member
Joined
22 Aug 2008
Messages
3,594
Location
Brighton
Visit site
Like others on here I've used PU40 and been quite happy with it, and the data sheet for it http://www.everbuild.co.uk/image/data/Tech Sealants/Puraflex 40 r.6.pdf says it's OK for marine applications and withstands salt water.

However I've noticed the manufacturers of it also have a specific range of marine products called mSEAL , see http://www.everbuild.co.uk/sealants/marine. mSEAL 295 appears to be the general purpose one, http://www.everbuild.co.uk/sealants/marine/mseal295 From the spec sheet it is slightly harder and less extensible but same tensile strength as PU40.

So if PU40 cuts the mustard, why have a separate range? Anyone got the mSEAL stuff?

Wondering now if I should be using PU40 for doing the new skin fittings as I intended (although I guess that isn't really the most demanding job, as if you do it right only a very thin edge will be in contact with the seawater!)

Edit - just noticed Force 4 sell it a £9.95, approx twice the price of PU40 from Toolstation.
 
Last edited:
Interesting. I've just been to the EverBuild site to see if they do PU40 in black. The second banner that faded in on their Products page is a link to Sika products: http://www.everbuild.co.uk/index.php?route=product/category

And I couldn't find any mention of PU40.

Full name is Puraflex 40 http://www.everbuild.co.uk/Puraflex-40?filter_name=puraflex (in black, grey or white)

and here is their mSEAL marine range http://www.everbuild.co.uk/sealants/marine although they say Puraflex 40 is suitable for marine as well hence my question.

(The Toolstation cat calls it PU40 and uses what must be an old picture; what you get over the counter is Puraflex 40 in the current packaging . It must have had a makeover!)
 
Last edited:
Thank you, I had found a couple of references to Puraflex 40 so I did wonder.

Nobody seems to stock it in black at a decent price though, unless buying 12 tubes.

Argh I hadn't realised Toolstation only have white! I want a couple of cartridges of black too. How many do you need?
 
Argh I hadn't realised Toolstation only have white! I want a couple of cartridges of black too. How many do you need?
Toolstation do it in black, I bought some from them a couple of weeks .
I have found PU40 to be universally good for most sealing and bedding jobs, unless it is something you may need to remove at some future point, it sticks like pigs **** to a blanket! For removable items use non setting mastics.
 
Just bought some PU40 from toolstation today.
Different labelling from previously, in an aluminium cartridge (like Sika use) instead of plastic, and says "made in Europe" on it instead of "made in Britain" as before.
Curious.

Ha! Everbuild are now owned by Sika! See http://www.everbuild.co.uk/group
 
Top