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Fernox leak sealer F4 liquid is ideal for reducing pressure loss from sealed systems. Seals most weep and small inaccessible leaks. Saves time and money on draining down and repairing. Does not cause blockages of the pump, air vents etc. Compatible with all metals and materials commonly used in central heating systems. Volume: 500ml. Plugs small internal weeps and leaks in central heating systems Ideal for reducing pressure loss from sealed systems Saves time and money on draining down and repairing Treats 100L system or up to 10 single radiators Compatible with all metals and materials commonly used in central heating systems
Zone Inland Delivery Services Price Order value Delivery time B Standard £3.99 £40 or under 3-5 working days B Standard FREE Over £40 3-5 working days B Express £4.99 Any value 2-3 working days B Next working day £7.99 Any value 1 working day Zone Inland Delivery Services Price Order value Delivery time B2 Standard £4 Any value 3-5 working days B2 Express £8.99 Any value 2-3 working days B2 Next working day £11.99 Any value 1 working day Zone Inland Delivery Services Price Order value Delivery time B3 Standard £18 Any value 3-5 working days B3 Express £22.99 Any value 2-3 working days B3 Next working day £25.99 Any value 1 working day All delivery details shown are related to this product only - delivery methods and rates may vary depending on the product and delivery postcode. For more details, please see our full delivery terms and conditions page.
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