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๐ง Seal smart, finish sharp โ the proโs choice for flawless fixes!
Hemway Construction Anthracite Grey Sealant & Adhesive 300ml (3 Pack) features advanced hybrid polymer technology that merges silicone flexibility, acrylic paintability, and adhesive strength. This waterproof, anti-mould, and UV-resistant sealant cures fast within 24 hours, offering a durable, paintable finish compatible with multiple surfaces including wood, metal, glass, PVC, and concrete. Eco-friendly and solvent-free, itโs engineered for both indoor and outdoor use, making it the ultimate all-in-one solution for professional-grade construction, renovation, and finishing projects.




















| Asin | B0D54N9KYY |
| Best Sellers Rank | 199 in DIY & Tools (See Top 100 in DIY & Tools) 10 in Sealers |
| Brand | Hemway |
| Colour | Anthracite Grey |
| Compatible Material | Metal, Plastic, Polyvinyl Chloride |
| Country Of Origin | China |
| Customer Reviews | 4.4 4.4 out of 5 stars (3,090) 4.4 out of 5 stars |
| Included Components | Hemway Construction Sealant - Anthracite Grey 300ml , Screw Cap Nozzle |
| Item Dimensions | 26 x 16 x 5 centimetres |
| Item Highlight | All-In-One Hybrid Polymer, Superior to Silicone Sealant, Waterproof, Odourless, Anti-Mould, Paintable, for Indoor & Outdoor |
| Item Type Name | Sealant & Adhesive |
| Manufacturer | Hemway |
| Manufacturer Part Number | 5056773406704 |
| Material | Hybrid Polymer |
| Number Of Items | 1 |
| Style Name | 3 Pack |
| Surface Recommendation | Door, Floor, Window |
| Unit Count | 900.0 millilitre |
| Water Resistance Level | Waterproof |
User
Easy to use sticks well
Excellent product and good value. It sticks well and seals joints. Whatโs not to like. It was a good colour match to the wall panels I was fixing with it.
User
great sealant
does the job
User
Good Stuff
Good quality. easy to work with. Wanted light grey but it was a bit darker than I expected but apart from that it did a great job
User
Says it all this is my 2nd order
This is my second order because it is a good quality product,does what it says,comes with cap for sealing opened tubes. Great delivery time recieved within 24 hrs.I can't fault the supplier or the product
User
Very sticky, just follow the instructions.
Very sticky. I applied five globs to the back of a garden mirror and it stuck very well to brickwork. Used a lollipop stick to apply the adhesive to avoid it running all over the place. This is the second garden mirror I've stuck, the other being one to wooden trellis. I'm very satisfied with the results.
User
Well worth it
This product was really good. It took me a while to realise that I hadn't cut a big enough opening in the nozzle, but that was due to my own lack of experience. It went a lot more smoothly after that. There was virtually no smell, I liberally applied the sealant around one long and two short edges, as well as around the taps. There was also a large gad around the shower pipes that I covered with it. There was still a good quarter of the tube left after that. My other rookie errors were not using masking tape to help keep the line clean, and not wetting my smoothing tool before use. I highly recommend this item though. There was a gap of around 2 mm between bath and tile when bath filled with water. The sealant is flexible enough to accommodate this without cracking.
User
Black bitumen.
This was excellent once cured it's solid and flexible, did the job well.
User
Stay clear of this
Bought for my bathroom shower as advertised as superior to ordinary sealant - well I really really struggled to use it for the following reasons:-1. Almost impossible to gun out of the tube (using two hands to squeeze the gun trigger) listed as manufactured in Jan'26 so should have been in date!2. After 2 weeks a brown "growth" had started to show so having to try to use it again - very difficult - I am in the building trade so know how to use a sealant but this is impossible.3. Said to be easy to work - no it wasn't.4. One * is one too many would give it zero.
User
Mastic
Trรจs bon produit
User
Good quality product
I have tried other brands, so far this is my favourite, high-quality, sticks to a different variety of surfaces. I recommend it highly.
User
Excelente
El mejor sealer que el podido comprar
User
Sealed
Worked as described
User
Polyurethane
Resealable tip is very pleasing and the tube itself high quality. I pumped countless tubes of caulking. The "Hybrid Polymer" proclamation was new to me. Everybody wants to be unique. This is polyurethane, not silicone. Like silicone, it comes in a plastic tube and pumps out with a high sheen, but its similarities to silicone end there. This caulking is like any other high quality polyurethane based caulk. It is sticky and does not like to be worked. It is not overboard like a butyl caulk. Have paint thinner ready if you can't make any mess. It compresses and eventually drips from a drip-free caulking gun. Overall, I am happy.
Trustpilot
1 month ago
1 week ago