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Dowsil DC785+ Sanitary Silicone Sealant 310ml Clear

4.8 (265 reviews)
SKU: 240301134453012 EAN: 5413278248589

Compare 7 prices for Dowsil DC785+ Sanitary Silicone Sealant 310ml Clear — from £8.21 to £10.95 across 7 UK sellers including BP Tools UK, B & Q, Screwfix and more. Save up to £2.74 (25%).

£8.21 11h ago
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Compare Prices from 7 Sellers

Prices updated 17 Apr 2026
2
B & Q
£9.99 +£1.78
18h
3
Screwfix
£9.99 +£1.78
19h
4
Travis Perkins
£10.84 +£2.63
11h
5
Travis Perkins
£10.84 +£2.63
35h
6
Tooled Up
£10.95 +£2.74
11h
7
My Tool Shed
£10.95 +£2.74
11h
#2 B & Q
18h ago
£9.99 +£1.78
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#3 Screwfix
19h ago
£9.99 +£1.78
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#4 Travis Perkins
11h ago
£10.84 +£2.63
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#5 Travis Perkins
35h ago
£10.84 +£2.63
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#6 Tooled Up
11h ago
£10.95 +£2.74
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#7 My Tool Shed
11h ago
£10.95 +£2.74
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If you’re looking for a reliable and high-quality sanitary sealant, you can’t go wrong with Dowsil DC785+ silicone. It provides a strong adhesion to most non-porous surfaces, and is incredibly fast-acting – it will be tack-free within the hour.\nThis sealant provides added protection against mildew and bacteria growth, so it’s suitable for use on sanitary fittings in both domestic and commercial settings. After application, Dowsil DC785+ leaves a shiny and glossy finish – it looks smart and professional, and will stay that way for even longer.\n• Bacteria-resistant acetoxy silicone sealant\n• Gets to work quickly – tack-free in 30 minutes\n• Gloss finish looks smart and tidy\n• Joint movement capability of +/- 20%\n• 100% recovery\n• Application temperature range of +5°C to +40°C
Brand Dow Corning
MPN 3279111C05
No features listed
No items listed

Customer Reviews 265

4.8
265 reviews
5 star
231
4 star
28
3 star
4
2 star
1
1 star
1
Poor packaging
1.0
February 28, 2026
MyGrove Verified Purchase

Technically this is a good product, easy to apply and get a good finish. It's not the cheapest but why skimp on supplying it with a non readable nozzle?

Great product
5.0
February 24, 2026
Ivan Mark Verified Purchase

Great product, very smooth to apply. Would reommend.

Resealed around old shower tray.
5.0
February 18, 2026
Handl Verified Purchase

Great silicone sealant to work with, competitive priced and top quality.

Silicone
5.0
February 17, 2026
Alison Taylor Verified Purchase

Good product, fair price, quick and friendly service

Independent Plumber
5.0
February 15, 2026
Independent Plumber Verified Purchase

Good silcone, good price, been using this brand for years

Top notch
5.0
February 15, 2026
cdc63ddc-ae09-5147-92b6-4abd5cfa54c2 Verified Purchase

Great product, easy to use, great results, my prefered brand of mastic

Excellent silicone sealant
5.0
February 14, 2026
fbdb2894-79a2-5a44-86d1-b8db02b11b51 Verified Purchase

I have just fitted a bath shower screen and wanted a good quality silicone sealant l looked on the website and decided on this one..Best sealant l have ever used very smooth and easy to apply. I left for a couple of days to dry and no leaks from the screen really happy with the product.

Good quality silicon sealant
5.0
February 14, 2026
Gomb Verified Purchase

I've tried lots of silicon and this stuff is definitely one of the best. Goes on easily and can be tooled to a nice smooth finish

Silicone
5.0
February 8, 2026
Putghyh Verified Purchase

Excellent service from Jamie in Swindon brilliant good

Grey silicone
4.0
January 26, 2026
Marauder Verified Purchase

Applied well and setting time quite good. Smoothed off OK.

USED and liked
5.0
January 21, 2026
Dad 24 Verified Purchase

Used and liked needed for a seal on a new shower screen and it worked very well

Dowsil 785 mastic as I said in my previous review is very good!
5.0
January 16, 2026
Bill Poster Verified Purchase

Dowsil 785 is probably better than Dowsil 784 very good mastic as I said in my previous review, nice smooth flow, just wish they would put a screw top on it to reseal it after use?

Dowsil DC785 Grey Silicon
5.0
January 11, 2026
a69b6c1c-8968-5ae0-8e9b-67372356dac3 Verified Purchase

Grey Silicon just the right colour, smooths out very easily.

Recommended
5.0
January 9, 2026
9b206753-ba59-527f-b759-d25b6792ab19 Verified Purchase

Easy to apply and nice clean finish. Looks professional.

Silicone sealer
5.0
December 4, 2025
Busy Person Verified Purchase

Just like every other silicone sealer - did the job as expected

Does the job
5.0
December 2, 2025
e0bf99db-06a2-5617-9035-cf644bdb8449 Verified Purchase

Easy to use, keeps it's colour & stays put in the wet room. Used it several times. Never disappointed.

grey silicone
5.0
November 30, 2025
93edc6fa-ab54-52a8-81f8-dc7afa16c34e Verified Purchase

Great application & smooth finish. Sealed up my shower

Good
5.0
November 22, 2025
ChippyRSC Verified Purchase

Does as it is intended and easy to tool up unlike some brands of coloured sealants

Dow Manhattan Gray
4.0
November 13, 2025
Not a plumber Den Verified Purchase

Bought this to match the product that the tiler used.
The tube does not come with a cap to help seal the product.
The tube does not have a thread so fitting a spare cap does not allow you to seal it
The product was easy to use and smooths out easily.

Silicone Grey
5.0
November 1, 2025
Mercedes Ox Verified Purchase

Absolutely fantastic product, easy to use and looks great 👍

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