Sikaflex 291 ?

[Lee_Shaw]

Hi

Does anybody know if this product is suitable for use below the waterline?

Much obliged

<hr width=100% size=1>Steve

 

[Althorne]

No it's not. See the posts over the last day or so. The silicone mentioned there is better equiped for that job.

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[MainlySteam]

Gulp /forums/images/icons/shocked.gif - Sika Industries and lots of boat builders will be most surprised to learn that. It would have to be one of the most commonly used sealants underwater.

Technical Data Sheet is at <A target="_blank" HREF=http://www.sikaindustry.com/tds-ipd-sikaflex291-us.pdf>http://www.sikaindustry.com/tds-ipd-sikaflex291-us.pdf</A>.

John

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[Lee_Shaw]

Phew!

Thanks John - I assumed it was and used it to fit new through hulls at the weekend - then I started to get a nagging doubt when I read the window seal thread yesterday. Checked last night but no information at all on the tube apart from the silhouette of a yacht and a warning not to inhale the fumes.

Aaaaah all's well again. Thanks.

Mental note: Check suitability of products before using them.

<hr width=100% size=1>Steve

 

[Lee_Shaw]

Althorne! - sheeesh - you nearly gave me a heart attack man.



<hr width=100% size=1>Steve

 

[MainlySteam]

No problem. It should be given a week for full cure before being totally immersed though. Thats something many are not aware of, but many boats get launched earlier and doesn't seem to be a dramatic problem (it moisture cures).

John

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[MainlySteam]

Lets forgive him - its his birthday I see (been on the turps perhaps /forums/images/icons/smile.gif). Anyway, Happy Birthday Althorne!

John

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[Althorne]

My apologise you are quite right John except it should not be used with an ABS plastic as it makes it go brittle (Nasa tubes). Sika say it is specifically formulated for sea water. I've slapped the back of my hand already.

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[Althorne]

Thanks chaps, too mush excitement for a man my age. Should have thought thru before sticking my welly in it again.

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[AndrewB]

Check - my yacht is still afloat. At least it was when I last looked. ;-)

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[Lee_Shaw]

...happy birthday tooooooo yooooooooooooou.

Hip hip....hoooray......hip hip.........



<hr width=100% size=1>Steve

 

[Althorne]

Splacks Lee.ee mush rebember snot to type bfore achinolics ave worn 0fff.
Nuff 4 2day mi twin bruvs seen too b starin at mee frome the mirror oposite.


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[kingfisher]

1) Do NOT use silicone, as it is water resitant, but not salt-water resistant.
2) Sikaflex does dry under water, as the main working component is iso-cyanite based. Actually, in a 100% dry atmosphere, sikaflex would never dry.

Sikaflex unfortunately has the strange property that it will tend to stick to everything, except the one spot where you want it to.

And why does the manual clearly states that the working surface nees to be dry, clean and de-greased, when it will stick to my hands (which are humid, dirty and greasy) untill removed mechanically?

<hr width=100% size=1>Group of people on the pontoon: skipper is the one with the toolbox.
http://sirocco31.tripod.com

 

[Althorne]

Maybe you are cleaner than you thought you were Henk???????

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[MainlySteam]

Methylated spirits (denatured alcohol if called something else in ones own part of the world) will remove Sika off ones hands (and other things), as long as not cured, no problems at all.

John

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[Gunfleet]

and if cured?

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[MainlySteam]

Same is still pretty good but just not so easy. Scrape what one can off then plenty of methylated spirits.

There may be something just as easy to obtain as methylated spirits that works better on the cured stuff, in which case I would like to hear about it too /forums/images/icons/smile.gif. Sounds like Oldsaltoz advice territory perhaps?

John

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[Gunfleet]

He has gone quiet for a bit. Obviously sailing. He would make a lot of friends if he could suggest a technique.

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[AndrewB]

Cleaning Sikaflex off hands.

Sikaflex can be removed quickly and completely from the skin with International Thinners no 9, followed by immediate washing in soap and water.

This seems OK if exposure to the thinners is quick, but I would only recommend this if having clean hands is essential. My usual solution is to leave the Sikaflex to cure, scrub the worst off with a pan-scourer, and the remaining stains wear off after a few days.