Dow Corning 791 Weatherproofing Silicone Sealant Black 310ml Product Code: 62431

Low modulus silicone that gives excellent, unprimed adhesion to both porous and non-porous substrates. Suitable for weather sealing and expansion joints.


  • Low Odour &


ISO 11600-25LM, ISO specification 9047 Class 50%.
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Safety Data Sheet
Additional Information
Technical Specification
  • Brand : Dow Corning
  • Sealant Adhesive Volume : 310 ml
  • Product Type : Weatherproofing Silicone Sealant
  • Model Name : 791
  • Volume : 310 ml
  • Colour : Black
  • Pack Size : 1
  • Manufacturer Guarantee : 1 Year Guarantee
  • Pieces in Pack/Case : 1
  • CE Standard (Tested to EN...) : ISO 11600-25LM, ISO specification 9047 Class 50%.
Product Contents
Delivery & Returns


Standard delivery service up to 3 working days: €8.95

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€7.35 Incl. 23% VAT

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Dow Corning 791 Weatherproofing Silicone Sealant Black 310ml is rated 4.9 out of 5 by 21.
Rated 5 out of 5 by from weatherproof silicone best buy, brilliant quality, does exactly what it said, the description was precise making the item easy to choose for the task in hand, i would highly recommend this product for a vast array of tasks in that area.
Date published: 2018-02-19
Rated 4 out of 5 by from Easy to use Great product, silky smooth. Doesn't dry glossy fab
Date published: 2017-08-20
Rated 5 out of 5 by from Dow Corning 791 Extremely good compound easy to use and works really well
Date published: 2017-04-10
Rated 5 out of 5 by from Sealer superb Advised by excellent helpful screwfix staff to use Dow corning low modulus sealer for my barn conversion turned out very good advice finish is superb and product was a good price excellent advice from an excellent company
Date published: 2016-11-14
Rated 5 out of 5 by from DOES THE JOB I used this on my old pre fab concrete garage to reduce the draughts where the panels met it came out of the tube really easy but did not slump so I could do a seven foot by half inch run in one go easily and the silicone adhered well to concrete and when I checked it the next day it was set nicely but still soft to touch so had the flexibility that I needed in the garage and as a bonus it was on offer
Date published: 2016-11-12
Rated 5 out of 5 by from very good weatherproof silicon This is definitely a weatherproof silicone you can trust. It is easy to apply and it works really well. I totally recommend, especially for a similar price.
Date published: 2016-10-24
Rated 5 out of 5 by from Proven brand at a cheap price Used this item to seal timber cladding on barn conversions , adheres to timber well .
Date published: 2016-09-24
Rated 4 out of 5 by from Does the job Definitely worth paying the extra for - superior product
Date published: 2016-09-21
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