View Full Version : sikaflex 291

12-19-2003, 02:02 PM
is sikaflex 291 more equivilant to 3m 5200 or 4200?


Art Read
12-19-2003, 02:24 PM
Don't have a tube handy, but I believe it's closer to 4200. What was the "old" number? 321? Something like that. Does it say "Sealant/Adheasive" on the label, or just "Sealant"? Adheasive is the "forever" stuff.

Dan Nielsen
12-19-2003, 02:39 PM
According to Jamestown:

Sikaflex 291 Good adhesive power. All purpose adhesive sealant, may be used for light bonding. TS:225 PSI (200 PSI for long time open version)

It replaced 240 and 241

3M 5200: Strong permanent seal

3M 4200: Medium adhesive power

Sounds like 291 and 4200 are close kin and the 5200 is the strong son.

Hope this helps.

Ian Wright
12-20-2003, 06:37 AM
291 DC is my goop of choice for seams on a laid teak deck, It needs its own dedicated primer so is expensive. Next boat will have it's deck payed with Jefferies,,,,,,, except there won't be a next boat.


Wild Dingo
12-20-2003, 11:26 AM
Well since I used a tube of the stuff today I sure as ****e hope its bloody good!! :rolleyes:

Went totally nuts with the goop I did... couldnt make heads or tales of the flamin sika site that reddog posted on my thread about the stuff... ahhh damn the destructions Horatio!! into the fray!! tongue.gif ...so just thought buggar it paid me $20 for the tube so best get to it! :cool:


I got GT stripes!! :D


Ive cleaned up all the crud of then gooped and reinstalled the rub rails and taken most of the masking tape off... except around the keel hull join which I did just on dark so wont know about thatun till tomorrow

So hopefully this old girl will hold together through all I chuck at her!!... yes yes much more to do... well gots to sand her put some sorta muck in the wee gaps dents and dings all over her then sand her some more then prime her sand her prime her again and bung some good ol paint on her bum... and then the work on her insides starts!! ...either that or I'll just drop her in and have some fun :D well it is summer here after all :cool: