Material | Polyurethane |
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Brand | SIKA |
Style | Compact |
Item Weight | 0.8 Pounds |
Item Dimensions LxWxH | 11.5 x 2 x 11.5 inches |
Compatible Material | Wood |
Water Resistance Level | Waterproof |
Item Form | Oz |
Color | White |
Manufacturer | AP Products |
Model | 017-90891 |
Item Weight | 12.8 ounces |
Product Dimensions | 11.5 x 2 x 11.5 inches |
Country of Origin | USA |
Item model number | 017-90891 |
Is Discontinued By Manufacturer | No |
Manufacturer Part Number | 017-90891 |
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Sika Sikaflex-221, White, multi-purpose sealant/adhesive, polyurethane fast curing sealant, 10.1 fl. oz Cartridge
Purchase options and add-ons
Material | Polyurethane |
Brand | SIKA |
Style | Compact |
Item Weight | 0.8 Pounds |
Item Dimensions LxWxH | 11.5 x 2 x 11.5 inches |
About this item
- Sika flex is the most well known brand of one component polyurethane sealant/adhesive in the world
- This fast curing product provides permanent elastic adhesion to a number of surfaces with excellent cut and tear resistance
- Designed to resist the shock and abuse encountered over countless road miles, Silaflex-221 will maintain its strength and adhesion over the long haul
- Sikaflex-221 is weather resistant, sand able, paintable and NSF approved for potable water and incidental food contact
- Fit Type: Universal Fit
- SikaFlex-221 is the most well known brand of one component polyurethane sealant/adhesive in the world
- Our workhorse
- This fast curing product provides permanent elastic adhesion to a number of surfaces with excellent cut and tear resistance
- Considered by many to be the ultimate choice in truck, trailer, RV and bus manufacturing
- SikaFlex-221 is weather resistant, sandable, paintable and NSF approved for potable water and incidental food contact 221 - 10,14 oz. WHITE
Frequently bought together
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From the brand
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Sika is a specialty chemicals company with a leading position in the development and production of systems and products for bonding, sealing, damping, reinforcing, and protecting in the building sector and motor vehicle industry. Sika has subsidiaries in 101 countries around the world and manufactures in over 300 factories. Its more than 27,000 employees generated annual sales of CHF 9.3 billion in 2021.
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For over 20 years, Sika has offered pro contractors and DIY'ers the same superior performing products developed and used on the most spectacular projects throughout the world. Our Sika Pro Select product range encompasses a wide array of specialty construction products from sealants and adhesives to patchers and expanding foams. From job site to store shelf, Sika ensures that you have everything you need for your everyday projects.
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From the manufacturer
RV/Trailer Sealant & Adhesive | Marine Sealant & Adhesive | Marine Sealant & Adhesive | Polyurethane Sealant & Adhesive | Construction Sealant | Insulation Sealant & Adhesive | |
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Customer Reviews |
4.6 out of 5 stars
1,974
|
4.4 out of 5 stars
1,009
|
4.3 out of 5 stars
242
|
4.4 out of 5 stars
483
|
4.4 out of 5 stars
588
|
4.5 out of 5 stars
101
|
USE | Sealant & Adhesive | Fast cure sealant & adhesive for boats | Sealant & adhesive for boats | Sealant & Adhesive | All purpose non-sag sealant | Bonds to insulation boards |
APPLICATION | Wood, metals, primers, ceramic | Gelcoat, fiberglass, metal & wood | Deck, interior, fittings, vent | Joints, fillets, windows & more | Wall, floor, trim, window, door | PVC, metal, wood, stone, glass |
ADVANTAGES | Elastic, non-corrosive, paintable | Fast cure, paintable, excellent bond | Long open time, paintable, sandable | Odorless, jet fuel resistant | Flexible, paintable, resistance | UV stable, non corrosive, durable |
COLORS | White, Black, Aluminum Gray | Black, White | Black, White, Mahogany | White, Limestone | White, Limestone | White, Dark Bronze |
PACKAGING | 10.1 fl. Oz | 3 fl oz, 10.1 fl oz | 10.1 fl. Oz | 10.1 fl. Oz | 10.1 fl. Oz | 9 fl.oz. |
Product Description
Sikaflex-221 is a high-quality multi-purpose non-sag 1-c polyurethane sealant/adhesive that cures on exposure to atmospheric humidity to form a durable elastomer. Sikaflex-221 bonds well to a wide variety of substrates and is suitable for making permanent elastic seals of high adhesive strength. Suitable substrate materials are wood, metals, metal primers and paint coatings (2-c systems), ceramic materials and plastics.
Product information
Technical Details
Additional Information
ASIN | B00O9VFLRS |
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Customer Reviews |
4.6 out of 5 stars |
Best Sellers Rank | #1,490 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #7 in Urethane Adhesives #31 in Silicone Adhesives |
Date First Available | February 28, 2012 |
Warranty & Support
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This Item Sika Sikaflex-221, White, multi-purpose sealant/adhesive, polyurethane fast curing sealant, 10.1 fl. oz Cartridge | Recommendations | dummy | dummy | dummy | dummy | |
Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | |
Price | $19.26$19.26 | $8.97$8.97 | -31% $10.28$10.28 List: $14.95 | $14.99$14.99 | $29.99$29.99 | $8.65$8.65 |
Delivery | Get it as soon as Wednesday, Apr 3 | Get it as soon as Thursday, Apr 4 | Get it as soon as Wednesday, Apr 3 | Get it as soon as Wednesday, Apr 3 | Get it as soon as Wednesday, Apr 3 | Get it as soon as Wednesday, Apr 3 |
Customer Ratings | ||||||
Adhesion | 4.4 | 4.6 | 4.5 | 4.8 | 4.5 | 4.7 |
Easy to use | 4.2 | 4.5 | 4.2 | 4.8 | 4.7 | 4.1 |
Value for money | 3.7 | 4.2 | 4.1 | 4.8 | 4.5 | 4.0 |
Sold By | Amazon.com | Amazon.com | Amazon.com | Berkland Goods | Berkland Goods | Amazon.com |
material | Polyurethane | Polyurethane | Polyurethane | Urethane | Polyurethane | Polyurethane |
form | Oz | Liquid | Fl | Strip | Paste | Fl |
surface suggestion | — | Window | — | Roof | — | Doors |
compatible material | Wood | Wood | Metal | Metal | Metal | Plastic |
stain resistant | ✓ | — | ✓ | ✓ | ✓ | ✗ |
water resistance | waterproof | waterproof | waterproof | — | — | waterproof |
weight | 0.8 pounds | 9 ounces | 10.1 ounces | — | — | 1 pounds |
style | Compact | Compact | Crack Flex Sealant | Compact | Compact | Compact |
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Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the quality, flexibility, and adhesion of the caulk. For example, they mention it's a solid sheet, it sticks well, and it has good elasticity. Some appreciate the ease of use and sealant. That said, some complain about the color and ease of removal. Opinions are mixed on value.
AI-generated from the text of customer reviews
Customers like the quality of the caulk. They say it's good, holds up well, and is engineered to meet the need. Some mention that the tubes are mislabeled. Overall, customers are satisfied with the product's quality and performance.
"...Been using this product for 10 years now and have never had a leak on any repair that I have done..." Read more
"...full width, solid sheet. it was soft enough to spread out with a normal culk gun. the bead came out well, stayed proud, and did not sag or drip...." Read more
"Works as advertised." Read more
"I tried to use to fix some leak on my patio roof but it didn't fix the leak. Very hard to apply...." Read more
Customers like the adhesion of the caulk. They mention that it sticks like crazy, is an amazing adhesive, and sticks stuff together. Some say that the product is easy to apply and has a tight bond.
"...no leaks, wind force from driving has no effect. it seems to have bonded very well." Read more
"It has a nice consistency, but it is almost impossible to get it out of the tube.I wished it was a bit thinner...." Read more
"...It sticks so well that once I tried to pull a bracket off and pulled the top layer of gel coat off the fiberglass! It is always my go to adhesive" Read more
"Sticks really well and hardens harder then normal caulk but slightly softer then actual automotive seam sealer...." Read more
Customers find the caulk easy to work with. They mention it adheres well, sets quickly, and is resistant to UV rays. Customers also say that one tube goes a long way.
"This stuff is incredible , goes on easily, seals window frames on RVs perfectly. Water tight ...." Read more
"...You have to put effort into cutting it with a blade.Easy to use, this stuff can stain so wear proper protection including gloves...." Read more
"...It is important to follow the instructions and wear gloves to keep it off your skin, it is difficult to remove." Read more
"...This stuff works. Can be applied down to 40F, and sets up in 24Hrs, fully cures 7 days" Read more
Customers are satisfied with the sealant. They mention that it works well, is strong, and is an excellent choice for RV/Camper sealing. Some say that it's a good product for sealing gaps and window frames in RVs. Overall, most are happy with their purchase and recommend it to others.
"This stuff is incredible , goes on easily, seals window frames on RVs perfectly. Water tight ...." Read more
"...I use it as a cheap seam sealer anyways in certain locations, seals awesome. Recommended" Read more
"...It levels and fills voids and stops leaks. Ask me how I know? Cause I had a leak and I fixed it with this goop!..." Read more
"...It went down nicely and seems likely to seal well for many years...." Read more
Customers like the flexibility of the caulk. They mention that it sticks very well and remains flexible. Some say that it has very good elasticity and is not rigid like liquid nails.
"...It’s flexible, so it won’t crack and it doesn’t peel. You have to put effort into cutting it with a blade...." Read more
"...Very strong, good flexibility." Read more
"...Have been able to paint it after drying also. Sticks very well and remains flexible , only downside is the cost." Read more
"...The Sikaflex hardens into something that resembles tough rubber. It flexes and is not rigid like Liquid Nails...." Read more
Customers are mixed about the value of the caulk. Some mention that it's a good price and a very good investment, while others say that it is over priced.
"...I would assume it’s a decent price, I just don’t have anything to compare to. Would definitely buy again.. and have." Read more
"Price is high" Read more
"...A very good investment." Read more
"...The price was discounted and I was able to use it so I can't say it was misrepresented." Read more
Customers are dissatisfied with the color of the caulk. They mention that it was white and not black as requested, there is no color indication on the product, and wine discolors the white color.
"This is a great product but unfortunately the tubes were mislabeled white but are really black." Read more
"Sikaflex 221 is excellent, but Amazon does NOT label the colors correctly...." Read more
"Like several other reviewers, I received the wrong color. I ordered white. Plastic overwrap says white but the tube says gray...." Read more
"...it as black, but when I broke the seal and went to use it the contents were white...." Read more
Customers find the caulk difficult to remove. They mention that it spreads easily and is hard to remove from the tube. Some say that the cauk is very thick and hard to squeeze out of the tube, making it impossible to extract.
"It has a nice consistency, but it is almost impossible to get it out of the tube.I wished it was a bit thinner...." Read more
"...It can be tough to remove but with some solvent you just take a little at a time an it eventually comes loose...." Read more
"...instructions and wear gloves to keep it off your skin, it is difficult to remove." Read more
"It was tough to get out of the tube (compared to caulking) but the repair is strong and not going anywhere. I'll buy it again if ever needed." Read more
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This is only accomplished after proper preparation getting aluminum shiny clean before application..
I may be crazy but I even use it to caulk my tub.
FYI, outer tube said White, inside it was Grey! and you don’t know the color till you have opened it.
I wished it was a bit thinner.
You cannot apply a thin bead from the tube.
The only way I could use this adhesive was to cut the tip of the cartridge at its widest part and squeeze the adhesive on a piece of cardboard with great difficulty, then use it.
There is also no information as how long it takes for it to reach its maximum adhesion.