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Dow Corning

Dow Corning 791 Weatherproofing Silicone Sealant White 310ml

Product Code: 33876

310ml. Low modulus silicone provides excellent, unprimed adhesion to both porous and non-porous substrates. Suitable for weather sealing and expansion joints. ISO 11600 - 25LM. Meets ISI specification 9047 Class 50%.

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ISO 11600-25LM and ISO specification 9047 class 50%.

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Safety Data Sheet (COSHH)


5.0 5 3

QtyPrice per item
1 - 2 £6.29
3 - 5 £5.65
6 + £4.99

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Dow Corning 791 Weatherproofing Silicone Sealant White 310ml 5 5 3 3
Excellent Service I rate Dow Corning as the best on the market. It retains its colour sheen durability for the duration of its life with excellent adhesion and sealing properties also. 2 Dec 2014
Can't go wrong with 791. Can't go wrong with Dow Corning 791. It does what it says on the tube time after time. 17 Sep 2013
Check the date! I sealed round an exterior window frame with this, went away on a fortnight's holiday and came back to find it hadn't cured at all and was still very tacky. I then belatedly checked the "use by" date to find that Screwfix had sold me a tube which was a full 2 years out of date. The local branch replaced it without question but of course the very messy job of removing the defective sealant and replacing it was down to me. The replacement is fine and cured virtually immediately (so my rating relates to the 2nd tube, not the first) but I noticed that of the four tubes then in stock at the local branch one was a year out of date and the other 3 were just about to go out of date. So the moral is CHECK THE DATE. 6 Jul 2012
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Brand Dow Corning
Colour White
Manufacturing Standards ISO 11600-25LM and ISO specification 9047 class 50%
Model Name 791
Pack Size 1
Product Type Weatherproofing Silicone Sealant
Sealant Adhesive Volume 310 ml
Total Product Weight 0.506 kg