









🔧 Seal it like a pro — durable, sleek, and ready for every challenge!
Hemway’s Anthracite Grey Construction Sealant & Adhesive is a premium 3-pack hybrid polymer formula that outperforms traditional silicone. Waterproof, anti-mould, paintable, and eco-friendly, it delivers a durable, flexible seal on multiple surfaces with fast curing and excellent coverage—perfect for professional renovations and DIY projects alike.




















| ASIN | B0D54N9KYY |
| Best Sellers Rank | 885 in DIY & Tools ( See Top 100 in DIY & Tools ) 21 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 (1,352) |
| Included Components | Hemway Construction Sealant - Anthracite Grey 300ml , Screw Cap Nozzle |
| Item Dimensions | 26 x 16 x 5 centimetres |
| 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(s) |
| Water Resistance Level | Waterproof |
A**S
Works great, waterproof when used externally
Plugged the hole i needed it for. Waterproof and hasnt leaked so i assume its good quality and durable. Straightforward to use simply insert into silicone gun and snip the end off. Colour is indeed jetblack.
K**.
TOP QUALITY
Good stuff, stays a bit tacky for a while. Best to line each side of the gap to be filled, if possible, with masking tape. Remove the tape after you filled and levelled it or the tape might stick to the filled edge.
A**T
Good quality
Seems ok
K**.
Perfect for bait boat sealing.
Used for sealing my fishing bait boat, it’s quick dry and does the job.
K**R
Perfect
Easy to use, goes on great and drys quite quickly.
J**S
Bubbles on product.
Slow curing can be good or bad depending on what you want. Leaves bubles inside plastic, cutting and polishing it results in a poor result
T**G
Good product
Good product excelent service reasonable priced.
P**S
Recommended
Don't very often use sealant but this went on a treat and looks good
P**N
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.
L**E
Worked fantastic, used for gluing together flowers made from upcycled glass and dishes. Held all pieces together thru rain and high humidity. Have not tested thru the winter months yet. Live that it dries clear and easy to apply. Let dry indoors for 48 hours before hanging outside.
D**.
This product did better than expected.
M**C
Just put it in my chicken coop. So far it’s great! I’ll update if it doesn’t hold up but I foresee it lasting. Also painted over it and it was seamless. I actually really like the grey colored one because it’s way easier to work with and see.
F**D
Très efficace
Trustpilot
1 week ago
3 weeks ago