 | Home > Off Topic > Sikaflex - compare and contrast..... |
 
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| K9F Member Since: 12 Nov 2009 Location: Bournemouth Posts: 9610   
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Hi Blackwolf,
There can be many reasons why someone may be drawn to a particular product. Sikaflex 512 is badged as 'Caravan' sealant which will naturally perhaps come at a premium and be ideal for your purpose. Me personally from experience and trade related tasks prefer the 291 variety (which isn't even a listed choice of yours) as it is Marine Grade and used in the harshest environment possible in my view. 221 is badged as 'one component adhesive.' Personally I would lean to the 291 but that is me. You asked for differences. Datasheets for all three are below, print them off, compare and make a choice would be my avenue. http://www.uksealants.co.uk/downloads/Sika...-Sheet.pdf http://www.uksealants.co.uk/downloads/Sika...-Sheet.pdf http://www.uksealants.co.uk/downloads/Sika...-Sheet.pdf If you go through life with your head in the sand....all people will see is an ar5e!! Treat every day as if it is your last....one day you will be right!! |
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3rd Oct 2016 9:33am |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20335
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Personally not keen on the stuff, however, that company listed above is very good for stuff.
Used them before, very good service. ⭐️⭐️God Bless the USA 🇬🇧🇺🇸 ⭐️⭐️ |
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3rd Oct 2016 11:21am |
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| defender9 Member Since: 12 Mar 2016 Location: Fylde Coast Posts: 1629 
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Hi Custom90Steve, I would be interested in why you are not keen on Sikaflex, I have used it for years for bonding different materials especially aluminium and not had any problems. I am aware that there are other PU systems for sale which give a good bond. A well known Land Rover Series 1 restorer I know uses it exclusively for bonding aluminium together.
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3rd Oct 2016 12:02pm |
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| Zagato Site Supporter Member Since: 08 Jan 2011 Location: Billingshurst West Sussex Posts: 5013
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What are you plannig to use if for?
Careful as some Sikalfex hardens like concrete. Not always the way to go in some areas of a Landy body that flexes and you have a hell of job getting it back off again. I have used 291 on my boat for permanent, non flexing jobs... |
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3rd Oct 2016 12:17pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17364 
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Repairing some minor seam leaks on a tin tent, hence the 'caravan' references.
I have used 512 before for this purpose with good results, and I am aware that it is now used by many manufacturers during assembly. I hadn't until today come across any references to 221 also being aimed at caravans, hence the question. Thanks K9F as always for the links and info.  |
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3rd Oct 2016 1:33pm |
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| K9F Member Since: 12 Nov 2009 Location: Bournemouth Posts: 9610
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Me too! I work in the marine industry and it is used prolifically not with good results, but with great results if you know what you are doing of course! Very Welcome BW. Having used 512 with good results I suggest you stick to what you know, to get............. Good Results! If you go through life with your head in the sand....all people will see is an ar5e!!
Treat every day as if it is your last....one day you will be right!! |
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3rd Oct 2016 2:55pm |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20335
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I'm not a fan of how it skins and that it isn't quick cure.
But if it works for you go for it. ⭐️⭐️God Bless the USA 🇬🇧🇺🇸 ⭐️⭐️ |
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3rd Oct 2016 5:00pm |
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