White SIKA Sikaflex-291 All-Purpose Marine Adhesive and Sealant for Quick Curing

By: SIKA

SIKAFLEX-291 is the ideal marine adhesive and sealant for boats, offering superior adhesion to gelcoat, fiberglass, metal, and wood. This polyurethane sealant is highly resistant to fresh water, sea water, limewater, sewage effluent, and diluted acids and caustic solutions, making it incredibly durable. Plus, it features a fast cure time, making it perfect for applications that require speed. Packaged in a 10.1 fl. oz cartridge, SIKAFLEX-291 is easy to use and provides overall satisfaction.

Key Features:

This marine adhesive offers a long-lasting seal with its high-gloss finish and polyurethane sealant. It's white in color and dries quickly, making it an ideal general-purpose adhesive for a variety of applications.
91
B2B Rating
73 reviews

Review rating details

Value for money
84
Portion size
83
Packaging
85
Overall satisfaction
84
Easy to use
84
Adhesion
84

Pros and Cons

Pros
  • Ideal for adhesion to gelcoat, fiberglass, metal and wood
  • Resistant to fresh water, sea water, limewater, sewage effluent, diluted acids and caustic solutions make it durable
  • Features fast cure time that makes it ideal for applications where speed is important
Cons
  • May have an early expiry period

Details of White SIKA Sikaflex-291 All-Purpose Marine Adhesive and Sealant for Quick Curing

  • Item model number ‏ ‎: 90919
  • Industrial Sealants: Industrial Sealants
  • Customer Reviews: 4.4/5 stars of 965 ratings
  • Country of Origin ‏ ‎: USA
  • Item Weight: 300 Grams
  • Item Form: Gel
  • Manufacturer ‏ ‎: Sika USA
  • Color: White
  • ASIN ‏ ‎: B01GPIXX5Y
  • Date First Available ‏ ‎: June 8, 2005
  • Liquid Volume: 10.1 Fluid Ounces
  • Brand: SIKA
  • Silicone Adhesives: Silicone Adhesives
  • Is Discontinued By Manufacturer ‏ ‎: No
  • Product Dimensions ‏ ‎: 11.5 x 2 x 11.5 inches; 10.58 Ounces
  • Best Sellers Rank: #33 in Silicone Adhesives#40 in Adhesive Caulk#66 in Industrial Sealants
  • Adhesive Caulk: Adhesive Caulk

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Comments

Chris Castro: Liked you can paint it.

United States on Oct 29, 2023

Amazon Customer: Used this to seal up a solar cable gland on a bus roof. Then used it in a few other projects. It has performed amazing in all situations.

United States on Oct 28, 2023

Aaron Rock: Strong adhesive qualities. Wear gloves or you'll be wearing it on your hands for a few days.

Canada on Oct 24, 2023

Ted m.: loved how it worked for my application

United States on Sep 21, 2023

David Maceroni: Used this product to seal a freezer ice bath. Product worked phenomenal, was a fraction of the price of comparable products. Easy to use, has held up well for months with no signs of breakdown

United States on Sep 16, 2023

Gennarelli Marc: D une robustesse incroyable.
Utiliser pour un montage a plat d un Starlink V2.

Canada on Sep 13, 2023

Rob H.: It’s great stuff works really well but I ordered 2 white tubes and had one black, one white.
Doesn’t seem to be anyway to complain and receive another so $30 wasted

Canada on Aug 26, 2023

Don M.: This is an excellent product but I ordered black and white was shipped. I had to make it work because of time constraints so I used the entire tube. Super pain because now I still have to try and hide the white residue 😕
No provision in “wrong item” category for compensation after you have used it. Fair enough but decal on tube said black and on the base of tube it said White .

Canada on Aug 24, 2023

Colorado: Wonderful, grippy, but gooey to apply - super great adhesion - but absolutely need humidity such as East or West coast, near water, Great Lakes or humid Georgia. I live in Colorado and it is still gooey on my sailboat - called the company - they said need 50-60% humidity or it won't dry. Used in my bathtub and I had to leave hot steaming water in the tube twice and it adhered perfectly. Otherwise would be 5 stars in a humid climate. 2 stars for Colorado - but it's not chemical reaction for drying - it's reactive to humidity.

United States on Feb 16, 2023

James: I used this to redo all the outside joints on my RV. First, I removed the old caulk and cleaned the joints with a cleanser and then washed the cleanser off with rags and water, then rubbed dry with a clean rag. Then left the joint to continue to air dry any remaining moisture as moved to another joint. Once air dried as well, I applied the Sikaflex-291 and left the seams to cure overnight.

I found it really difficult to apply and the best way to smooth the joint was dipping my fingers in rubbing alcohol first and then smooth along the seam. Wipe any excess collected on a rag, But always moisten your finger first with the rubbing alcohol before touching the Sikaflex again. (I had no success using soapy water - but rubbing alcohol allowed me to smooth joints or overlap caulking joints.)

Then leave it alone.

It states somewhere in my reading that it can take up 10 days to cure. And I found that to be pretty accurate except for the North side of my RV does not get any sun on it at this time of year. (October) And that side is taking forever to cure - it is still tacky to the touch and 14 days have passed so far. It's curing slowly but on what time table I do not...

Canada on Oct 14, 2022

White SIKA Sikaflex-291 All-Purpose Marine Adhesive and Sealant for Quick Curing "GEAR AID Aquaseal FD: Repair Your Outdoor Gear and Vinyl with this Flexible, 1oz Adhesive!" Sashco 31251 Round Pre-Caulking Closed Cell Backer Rod Roll for Sealing Gaps and Cracks
White SIKA Sikaflex-291 All-Purpose Marine Adhesive and Sealant for Quick Curing "GEAR AID Aquaseal FD: Repair Your Outdoor Gear and Vinyl with this Flexible, 1oz Adhesive!" Sashco 31251 Round Pre-Caulking Closed Cell Backer Rod Roll for Sealing Gaps and Cracks
B2B Rating
91
98
97
Sale off $1 OFF $8 OFF
Total Reviews 73 reviews 625 reviews 408 reviews
Item model number ‏ ‎ 90919 31251
Industrial Sealants Industrial Sealants
Customer Reviews 4.4/5 stars of 965 ratings 4.6/5 stars of 4,663 ratings 4.5/5 stars of 137 ratings
Country of Origin ‏ ‎ USA
Item Weight 300 Grams ‎0.1 Pounds
Item Form Gel ‎Oz Foam
Manufacturer ‏ ‎ No Sashco
Color White ‎Clear Grey
ASIN ‏ ‎ B01GPIXX5Y B009YZN4PU
Date First Available ‏ ‎ June 8, 2005 September 1, 2004
Liquid Volume 10.1 Fluid Ounces
Brand SIKA ‎GEAR AID Sashco
Silicone Adhesives Silicone Adhesives
Is Discontinued By Manufacturer ‏ ‎ No
Product Dimensions ‏ ‎ 11.5 x 2 x 11.5 inches; 10.58 Ounces 600 x 1 x 1 inches; 10.41 Ounces
Best Sellers Rank #33 in Silicone Adhesives#40 in Adhesive Caulk#66 in Industrial Sealants #574 in Adhesive Caulk
Adhesive Caulk Adhesive Caulk Adhesive Caulk
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