Dowsil 781 Silicone Sealant Black 310ml
14-day returns on all eligible orders
Contact us within 14 days of receiving your order to request a return.
Shipping information
Orders are picked, packed and dispatched from our Northampton warehouse.
- Free delivery to mainland UK addresses on orders of £40 or more.
- Orders under £40, and orders to Northern Ireland, have a delivery charge, shown at checkout before you pay.
- You will get an email with your tracking number once your order has shipped.
Full details are in our Shipping Policy.
Returns & warranty
Changed your mind? You can return an online order within 14 days of receiving it. Please contact us first for return instructions, then you have 14 days to send the goods back.
- Items must be unused, complete and in their original condition, with all accessories, instructions and original packaging.
- You arrange and pay for the return postage on change-of-mind returns. We refund the price of the item plus our standard delivery charge.
- Damaged in transit? Let us know within 48 hours of delivery - photos help.
- Faulty or wrong item? Contact us before sending anything back. Faulty goods are covered by your statutory rights.
Your statutory rights are not affected. Full details are in our Refund Policy, or email onlinesales@nn4online.co.uk.
Dowsil™ 781 is a one-part silicone sealant, which has excellent adhesion to a wide range of non-porous surfaces, including: glass, aluminium, painted surfaces and composite boards. Excellent resistance to ageing, shrinkage, cracking and discolouring. Suitable for glazing applications, weather sealing of sheet cladding and general internal sealing applications.
Tack-free in one hour with a working time of 5-10 minutes. Skin over time is 14 minutes.
Conforms to ISO 11600-F&G-20LM.
Dowsil™ 781 Silicone Sealant, Black