







🔧 Seal Smart, Seal Strong — Don’t Let Your Projects Wait!
SIKA Sikaflex-1a is a premium polyurethane sealant designed for small joints up to 0.5 inches. It offers rapid curing with a tack-free time of 3 hours and full cure within 5 days. Its high elasticity accommodates significant joint movement (±35%), while its weather and age-resistant formula ensures durability in both interior and exterior applications. Certified to meet ASTM C920 and NSF/ANSI 61 standards, it’s ideal for windows, door frames, pool decks, and more, providing a waterproof, flexible, and reliable seal.















| ASIN | B00461KMIY |
| Best Sellers Rank | #13,755 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #10 in Polyurethane Adhesives #67 in Urethane Adhesives |
| Brand | SIKA |
| Color | White |
| Date First Available | August 13, 2010 |
| Full Cure Time | 5 Days |
| Is Discontinued By Manufacturer | No |
| Item Form | Fl |
| Item Weight | 1 pounds |
| Item model number | 91017 |
| Liquid Volume | 10.1 Fluid Ounces |
| Manufacturer | Sika USA |
| Material | Polyurethane |
| Maximum Gap Fill | 0.5 Inches |
| Number of Items | 1 |
| Product Dimensions | 2.5 x 12 x 12 inches |
| Surface Recommendation | Concrete |
| Tensile Strength | 175 Pounds Per Square Inch |
| UPC | 033886002752 |
| Unit Count | 1.0 Count |
| Water Resistance Level | Waterproof |
J**B
Great stuff for Pool Decking
Great stuff. I used it to seal seam between the concrete deck and my pool tiles. Worked great. Not sure why they say it's self-leveling because it stayed in place on an overhead application. I used painters' tape on the vertical tiles to get a nice clean line.
J**D
Excellent for Superior Walls!
Excellent for sealing Superior Walls as they age. Worked perfectly!
2**B
Excellent product but incorrect description
I did not even attempt to use the Sikaflex until over a year after I purchased it, and then discovered that it expired one week after I bought it. So, it was over a year past expiration. But to my surprise, it was still in good condition! Very tough, strong adhesion, but Amazon’s description says it’s self-leveling, which it is not. I used it to bond shoe soles, seal leaks, and a tough caulking compound. A very good product that I will probably buy again.
M**.
Easy to install, good pliable use on my floor.
I used this product to fill the cracks on my garage floor. It works good. So far it has been standing up to daily wear and tear of the floor as normal. I am very happy 😊.
L**L
Seems like good stuff
Garage floor and driveway apron started to settle apart I filled the crack with this to prevent water intrusion and further erosion. Went in nice. Looks good. Seems to be a good seal. I wire wheeled it prior to application. We will see if the bond holds up over time.
R**6
Recommend
Reliable product. Ordered and shipped directly to job site. Arrived in time. Worked as expected.
G**S
Priced good for what it does.
Really good easy to use.Clean up a little messy but that's the usual for th8s type product.
K**K
Not self leveling!
Incorrect product description. After applying the product, I realized that it is not self leveling and had to be tooled and shaped which made a huge mess. Contacted customer service and the agent has not a clue what self leveling even means. She just wants to give me $5 for my troubles and issue a return. Why would Amazon make a customer return a used tube of sealant that is open? It will make a huge mess during shipping and will just end up in the landfill. Not to mention the hassle. Not the best way to keep costs down and customers happy Amazon. Fix the description so that people are buying the correct item in the first place. It’s like trying to get a customer to rip out wall paper and return it just for the sake of returning. That is not customer service, but again, most of the agents have zero common sense, they don’t know the products and just read the same script whether you’re returning an already applied sealant or a modem.
A**R
So far it survived winter.
A**N
This sika is probably the best one out there. Bought 5 of these, enough to seal a lot of cement gaps and cracks on my driveway. I'm in BC Canada and it rains quite a lot. I'm finding this product attaches itself to the surrounding concrete better than other sealants and creates a solid barrier to prevent water from getting thru. I got the dark gray colour and it blends well with existing concrete. 5 of 5 stars!
G**N
Me ha funcionado muy bien, para sellar lugares donde se filtraba el agua
E**Y
Great for the roof of the RV and sunroom. Easy to work with.
J**F
Cumplió con mis espectativas
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