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Sikaflex 291 LOT is an all purpose elastic adhesive, used to bond floors to subfloors or metallic frames, exterior or interior panels, bonding trim moldings to hull etc. Long open time. The 10.3 oz cartridge pictured above is used in conjunction with an inexpensive caulking cartridge gun. The 3 oz size comes in a squeeze tube and does not require a cartridge gun.
March 17, 2022
Sikaflex 291 is amazing, I used it to make a seal on a 24'' steel irrigation valve cover, I followed the drying instructions by building a large humidor maintaining 50 to 80 percent humidity at 70-80 degrees. I had the opportunity to get water early so the dry time was five days, put cover on cranked it down irrigated, checked Sikaflex 291 seal...PERFECT. I was expecting the lower ring to cut into the new seal but to my surprise it didn't even dent it. The seal is 5/8x1/2'' thick, the best thing I saved over 100 bucks.
July 7, 2021
I'm in the marine industry and this product is standard in use, in Canada we can't get Mahogany coloured Sikaflex, so Jamestown is my go to place for it.
May 29, 2019
Used it to seal my deck. So far so good
November 9, 2018
We used this product to adhere urethane-based foam to wood and carbon steel substrates. Bond is performing well. No issues.
March 30, 2018
Used for bedding the recessed lap joints in Adirondack guideboat planking. The long open time (LOT) is a plus. Just be sure to remove the squeeze out while it is still flowable. Also get it off your hands immediately with a solvent (acetone works) or you will have to wear it off after it cures. Using latex gloves is a better (and safer) idea. Once cured, it is like soft rubber and seals as designed.
September 13, 2015
August 13, 2015
WE used the Sikaflex 291 LOT for caulking the deck seams on our antique runabout. The Sika brand is the preferred and the best product for the job. However the LOT isn't really what we wanted. The normal or quick cure would have been greatly preferred.
April 23, 2014
This is equal to 4200 but with a slower cure rate. This allows for a partially used tube to be stored for up to 30 days. Other types curing solid in an opened tube in as little as one day. This does mean the use of the product might take up to a week or more to fully cure but for my project this was not a problem.
July 20, 2010
I have used the same tube for about 30+ days and still flows like the 1st day. Re bedding above water line items on a sail boat that I am working on. Tape around fittings for easy clean up.
September 18, 2009
We use this product for bedding teak toe rails and hardware on sailboats. It will last in the tube better than 5200. Easy clean up with mineral spirits.
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