Sika
Sikaflex 291 LOT Marine Sealant Adhesive
Sikaflex 291 LOT Marine Sealant Adhesive
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Product Details
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. LOT stands for Long Open Time, ensuring you have the time you need to get the job done right. Use this marine sealant above or below the water line.
Choose from Black, Mahogany, or White. 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.
Info & Guides Density: 10.3 lb/Gal
Tack Dry: 3-5 hours
Rate of Cure: 1/4 in x 1/4 in bead 14 days at 40 deg F/60 percent RH
1/4 in x 1/4 in bead 7 days at 73 deg F/50 percent RH
1/4 in x 1/4 in bead 2 days at 73 deg F/90 percent RH
1/4 in x 1/4 in bead 3 days at 100 deg F/40 percent RH
Shore A Hardness (ASTM D2240): 40 to 45
Elongation at break (ASTM D4132): 700 percent
Tensile Strength (ASTM D412): 200 psi
Lap sheer strength (ASTM D1002): 120 psi
Peel Strength: 30 lbs/in on fiberglass, 25 lbs/in gelcoat
Application temperature: 40-110 degrees F
Service Range: -40-180 degrees F
Colors: White, Black and mahogany
Sandable, paintable, waterproof
Shelf Life: 15 months
- Technical Specifications
1/4 in x 1/4 in bead 7 days at 73 deg F/50 percent RH
1/4 in x 1/4 in bead 2 days at 73 deg F/90 percent RH
1/4 in x 1/4 in bead 3 days at 100 deg F/40 percent RH
Reviews
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11 to 12 of 14 Reviews
11 – 12 of 14 Reviews
Most Recent
Maine, USA
5 out of 5 stars.
Long open time is right
14 years ago
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.
Helpful?
Homewood, Kansas
5 out of 5 stars.
Sikaflex 291 LOT
15 years ago
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.
Helpful?
2 Ratings-Only Reviews
11 – 12 of 14 Reviews
Questions
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1 - 10 of 15 Questions
Q: can you use 291lot on century board&batten bottoms
3 years ago1 Answer
A: Yes, you can use 291LOT for this application.
3 years agoHelpful?
Q: Should Sicaflex be applied between wood planking and mating wood frames? For a wooden boat.
3 years ago2 Answers
A: I don't know.
3 years agoHelpful?
Q: Will this product match the Chris Craft Red Mahogany stain that you sell. It is my understanding that this product is not stainable.
4 years ago3 Answers
A: I have used other Sikaflex products. plain and mahogany. The latter has colored pigment mixed in. It is also paintable. I applied it to hard vertical pine wood siding to splits from 75 years of age/ shrinking. THe color helped, and I just painted over it with my Red Barn oil paint. Looks good. Did exactly what I wanted it to do.
4 years agoHelpful?
Q: is it paintable?
8 years ago1 Answer
A: Yes, Sandable, paintable, waterproof
8 years agoHelpful?
Q: Is this the one with the Wheel mark or IMO approval?
8 years ago2 Answers
A: No idea on that. Sorry
8 years agoHelpful?
Q: Can I use this to seal cracks in concrete sidewalk?
8 years ago4 Answers
A: I have only used it in deck seams but it would probably work in a sidewalk. I don't believe there would be any problems with adhesion and it should with stand the weather fine. It flows good from the tube so application should be fairly easy. I do believe Sika makes sealent strictly for cement joints.
8 years agoHelpful?
Q: I REPAIR INGROUND PLASTIC/FIBERGLAS POOL STEPS AND HAVE BEEN USING 3M 5200 SEALANT/ADHESIVE FOR A LONG TIME, WONDER HOW THIS SIKAFLEX COMPARESTO THE 3M PRODUCTS?
9 years ago5 Answers
A: It would be very similar. I use the 291 lot because you can continue to use the produce for a couple of weeks after opening. 5200 must be used immediately.
9 years agoHelpful?
Q: what can i use for cement patching ?
9 years ago2 Answers
A: 3M 5200. It has 2 times the holding power of the Sika-Flex 291. We use it for patching just about anything.
9 years agoHelpful?
Q: clean up ?
9 years ago6 Answers
A: Mineral spirits works well if uncured.
9 years agoHelpful?
Q: can it be used under water?
10 years ago7 Answers
A: Yes, successfully used to caulk seams between planking blow water line. Use good masking tape to cover the edge of planks... Caulked seams were cleaned and CPES was applied to all stripped planking, including seams.
10 years agoHelpful?
1 - 10 of 15 Questions