DOWNLOAD THE APP
Customer Services
Copyright © 2025 Desertcart Holdings Limited
DOWNLOAD THE APP
🪵 Seal the gap, not your style — flawless floors start here!
Osmo Gap Sealer 310ml is a premium single-component acrylic sealant designed for internal use on wood floors and various building materials. It offers flexible, long-lasting elasticity, fills over 30 linear metres of 3mm gaps, and provides a matte walnut finish that can be sanded for a seamless look. Ideal for professionals seeking durable, versatile, and easy-to-apply gap sealing solutions.
| ASIN | B010SVKTYM |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 3,820 in DIY & Tools ( See Top 100 in DIY & Tools ) 95 in Sealers |
| Colour | Walnut |
| Customer Reviews | 4.3 4.3 out of 5 stars (730) |
| Date First Available | 2 July 2015 |
| Item Package Quantity | 1 |
| Item Weight | 540 g |
| Manufacturer | Osmo |
| Manufacturer reference | OS-GPSLR |
| Material | Acrylic |
| Part number | OS-GPSLR |
| Product Dimensions | 16 x 34 x 440 cm; 540 g |
| Style | Compact |
A**R
Excellent mastik
Excellent mastik, easy to apply, excellent covering/filling. Even possible to sandpaper. I have used other osmo products which is why I chose this and it has lived up to my expectations.
K**A
Good product.
It is like with silicone - you have to squeeze it in AND smooth it. It leaves a matt finish so the floor has no gaps but is not smooth in colour / shade. Overall, does the job and is good value for money.
D**E
Wide range of colours
Amazing that this comes in so many colours so we could colour match to the wooden window reveals in our kitchen - very reasonably priced for a high quality product and easy to use.
M**E
Does the job.
Good colour match. Easy to apply. Cleaned off easily and took the wood finish without a problem. Resealable nozzle.
A**S
Bad colour
This product was easy to use but I don’t like the colour (mid oak)- luckily I didn’t fill the gap completely so can cover in something else. Test before you use!
M**F
As described
As described
B**N
Check colour chart !
The sealer seems good. Easy to use and decent applicator. The colour charts are awful though. I ordered medium oak and it’s completely the wrong colour from the attached chart. Have attached a photo of “medium oak” completely not what I wanted :/
M**T
Highly recommended
Excellent product, quick delivery delivery.
Trustpilot
3 weeks ago
1 week ago