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🛠️ Seal smart, stay protected – the future-proof choice for professionals.
Dowsil 785 Manhattan Grey 310C is a one-part acetoxy silicone sealant with integrated fungicide, offering fast curing and superior adhesion to non-porous surfaces. It resists harmful bacteria and mould, supports ±20% joint movement, and performs reliably across a wide temperature range, meeting key ISO standards for professional-grade sealing.
| ASIN | B00DKY7EMK |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 31,521 in DIY & Tools ( See Top 100 in DIY & Tools ) 27 in Silicone Caulk |
| Colour | Manhattan Grey |
| Customer Reviews | 4.4 4.4 out of 5 stars (65) |
| Date First Available | 24 Jun. 2013 |
| Included Components | 1 Cartridge |
| Item Package Quantity | 1 |
| Item Weight | 386 g |
| Item model number | 3279472/C05 |
| Manufacturer | Sherwin-Williams |
| Material | Silicone |
| Part Number | 3279472/C05 |
| Product Dimensions | 5 x 5 x 23.5 cm; 386 g |
| Shape | Round |
| Size | 310C |
| Style | Compact |
| Usage | Inside; Professional, Professional |
| Voltage | 100 Volts |
| Wattage | 6 watts |
M**N
Good
Perfect for my needs.
M**K
So flexible. Love that.
Made my bathroom joints tighter than my bank account after payday. I grabbed this Dowsil 785 in Manhattan Grey because my old sealant was basically giving water a free “back-door pass” into the walls. That old stuff was patchy, saggy, and about as reliable as my late-night DIY skills sober… which is to say: not. Once I squeezed this 785 out, the silicone lay down smooth and confident — like it knew exactly where it was meant to go. Within an hour it was tack-free, and within a day it felt like I’d welded the joint shut with silicone-grade Kevlar. It sticks to porcelain, tile, glass and other slick surfaces like it’s using industrial-grade superglue, but stays flexible so when things move a bit under weight or temperature it doesn’t crack. Handy when showers, baths, or sink units shift ever so slightly. The built-in mould and bacteria resistance feels like a bonus bodyguard against mildew, E.coli, and general damp nastiness — perfect for bathrooms, kitchens or any damp corner you don’t want turning into a fungal rave. Five stars. If sealants were judged by how smugly they repel water and dirt, this one would be strutting the job site in a suit.
L**S
Without nozzle.
I know this is a top quality product but wish I’d bought from screwfix as it came without a nozzle. So if I never had one I wouldn’t be able to use it.
L**S
Sealant
Just as described and works great
K**.
Dowsil is Dowsil
Wouldn't use anything else, best Sealant make in my opinion
A**R
Flow
Always use Dow Corning, great flow and adhesion.
G**I
Excellent Product
A very good quality sealant, used to fill joint between light grey kitchen worktops and upstands. Colour match is amazing giving a seamless joint that is hard to see.
J**H
Nozzle missing
The tube was delivered without the end nozzle so unable to use
Trustpilot
2 months ago
3 days ago