Leak Sealer - 1 Litre Bottle

No reviews yet - Write one

RRP £29.99 save 50%


In stock | Get it Tuesday

Order by 4pm Monday and select Next Day (S)

FREE standard delivery*. Next day from only £4.99 extra. Read full delivery info

What's great about it?

  • Prevents leaks and helps protect central heating systems
  • Non-toxic and non-irritant formula
  • Safe on all materials found in heating systems

Read full product description


Leak Sealer - 1 Litre Bottle

Leak sealer is designed to prevent leaks and protect your central heating system. It will seal small, internal and inaccessible leaks as well as weeping joints. The sealer will not cause blockages in your system and will help reduce overall pressure loss in sealed systems.

The leak sealer is easy to use and will work with all radiator materials including aluminium. It will be effective within 24 hours depending on the severity of the leak and for peace of mind, it’s non-toxic and non-irritant.

• Prevents leaks and helps protect central heating systems
• Easy to use
• Will not cause blockages within the system
• Non-toxic and non-irritant formula
• Safe on all materials found in heating systems (including aluminium)
Type Radiator Accessories

Delivery Costs

COVID-19 Update (30/03/2020)



  • Our website remains open for orders
  • Our warehouse and courier partners are operational
  • Our customer service and sales team are working from home and are available via telephone, email and live chat

Read our full Covid-19 statement here.

​How long will my delivery take?

Items in stock and ready for immediate dispatch display ‘In Stock’. Other items show the estimated delivery time, such as 1-2 or 2-4 working days. This information is given to you on each product page throughout the website, as well as in the basket prior to checkout, and in the checkout process itself.

How much does delivery cost?

  • Free delivery on UK mainland orders. Area exclusions and surcharges apply*. We also offer next day and weekend services on certain items starting at £7.99.
  • Items that are not available for next day or premium deliveries will display an estimated lead time displayed in working days (Mon-Fri). Please note that when ordering multiple items, the longest estimated lead time shown would apply to the complete order.

    * Additional charges will usually apply to some areas of Northern Scotland and Scottish Isles, Channel Islands and Northern Ireland, as well as to some areas of mainland UK for very large or fragile items that are sent by pallet.

Next day, weekend & time-specific deliveries

If an item is 'In Stock', you will also be able to choose a number of other delivery options during the checkout.
For our other items that show a delivery estimate, you will not be able to choose next day or timed services. We aim to deliver the item within the advertised timescale. 

International delivery

We deliver small items (valves, brackets, hooks, heating controls etc.) to most of Europe. You will be informed if any of the items in your basket are not able to be sent to your country during the checkout process.
If your country is not listed, or if you want to order a larger item, we may still be able to help. Please call us on 01202 612808.

Products from the same range

Recommended products

Customers also bought

Popular related categories