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C-Tec Miracle Seal 250ml Multi-Purpose Solvent For Cracks and Leaks
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C-Tec Miracle Seal 250ml Multi-Purpose Solvent For Cracks and LeaksFrom C-Tec comes the Miracle Seal formula designed and guaranteed to stop and prevent minor leaks, and temporarily repair high-pressure leaks without clogging water-based cooling systems or mechanisms. Formulated with lubrication and anti-corrosion additives to prevent clogging and further spreading of cracks and leaks, the C-Tec Miracle Seal comes in a non-pressurized container sufficient for up to 25 litres of coolant and is applicable for a wide variety of tasks, from temporarily sealing leaks in high-pressure pipes, to fixing hairline cracks in motor blocks and water coils, or even fixing a central heating leak. Main Features:
Technical Specification:
NOTE: Due to restrictions of the postage of aerosols C-Tec Miracle Seal will be sent via an applicable postage method/courier. Product Specification Sheet - Click Here You may also be interested in CT-1 Multi-Purpose Adhesive Sealant from C-Tec. 
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Best product I have found used on a car and a central heating system.
Anonymous
United Kingdom
19 January 2022
Helpful?
(23)
(0)
fantastic
My radiator was leaking! Cheap and effective fix. Thanks
Jimmy
United Kingdom
21 October 2016
Helpful?
(124)
(0)
This product is a miracle! Easy to use and highly effective in sealing up cracks and leaks. 5 stars, definitely recommend!
Karen Mayfield
United Kingdom
06 December 2023
Helpful?
(10)
(0)
This stuff is amazing! Sealed all my cracks and leaks in minutes! Highly recommend! 5 stars!
Derek Mason
United Kingdom
27 November 2023
Helpful?
(10)
(0)
This miracle seal is a must-have for every home - it quickly and easily seals cracks and leaks with no mess!
Analise Martinez
United Kingdom
23 November 2023
Helpful?
(10)
(0)
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I have a leak in my C/H boiler but can’t find the leak will this work to locate and fix if so how would I use it thanks regards Ian
Ian from United Kingdom
Hello, this is suitable for central heating boiler. This product is a liquid, which you would pour into the heating system to fix the leak, thanks
Electrical World Team
I have a plastic roof in my pergola
Small drip right in the middle
Needs to be fixed from underneath
Impossible to get on top of roof unless I dismantle everything
will this help
Lee from United Kingdom
Hello, this product is a liquid designed to be poured into cooling systems to seal leaks, so it will not be suitable for your requirements, sorry
Electrical World Team
Hi, will this seal gaps in roof tiles?
Billy from Ireland
Hello, thanks for the question. No, this product is not suitable as it is a liquid designed for repairing cooling systems. How large are the gaps that you are wanting to seal?
Electrical World Team
Can use 3 or 4 bottles in system boiler for small drop to fix leak?
Shah from United Kingdom
Hello
3-4 bottles can be used in a system boiler, as long as they are added into the system properly, following the instructions on the bottle. Although there may be no need to exceed 1-2 bottles being used.
As every household and leak are different, with varying pipework diameters, it’s quite difficult to equate an exact quantity. Although there is a method to work out the dosage in a system through using the KW of the boiler as a guide. For a standard 30KW boiler this equates to 2 bottles.
Every 250ml bottle should be added into the system one at a time, and the heating system refilled and tested after each one is added. This should be repeated until the leak is fixed or you have reached your maximum dosage. If you have reached your maximum dosage and the leak still persists, unfortunately, Miracle Seal will not be able to stop the leakage.
When Using Miracle Seal it is recommended to dilute the solution prior to adding it to the system. Usually one part MS to one part water, giving an overall diluted solution of 500ml. This should then be added into the middle of the system, preferably through a radiator.
If there are any wire mesh strainers incorporated in the pipework they may need to be removed or perforated, as any leak sealer will react to wire mesh as though the mesh is multiple pinhole leaks.
Thanks
Electrical World Team
I have a slow leak in the closed circuit 1.5 bar
Central heating radiator loop. will this product cure the problem?
regards JB
James from Spain
Hi James, Yes miracle seal is perfect for small cracks and leaks in a radiator system. Remember to flush out your system appropriately and follow the instructions laid out by C-Tec in their article:
http://www.ct1ltd.com/product-applications/use-miracle-seal-fix-leaks-cooling-system/
Electrical World Team
Do you think 1-2 bottles of this would seal a water drip in a tank with about 300 gal of water.
Daron from United States
Hello, the manufacturer recommends using 1 bottle for each 25 litres of water. To seal a 300 gallon tank would therefore require 55 bottles. Thank you for your enquiry.
Electrical World Team
I have an underground PVC pipe leaking, will Miracle Seal liquid work?
Ronald from Jamaica
Hello, Miracle Seal will only work in a closed system, such as a heating or cooling system, as it has to stay in the pipework for it to take effect. It will not work on supply pipes or waste pipes as the liquid will simply flow past the leak. Thank you for your enquiry.
Electrical World Team
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