FERNOX 56603 LEAK SEALER F4 (500ML)

Our Part No
3500006
MPN
56603

RRP: £52.13

Our Price

£24.41 inc VAT

In stock - Next day delivery available

  • Order before 7pm* for next day delivery

  • Order before 7pm* for next day collection

  • Need help? We're available every day

* excluding weekends and bank holidays

Next working day delivery

Order by 7pm

FERNOX 56603 LEAK SEALER F4 (500ML).

The Fernox F4 Leak Sealer (500ml) is ideally suited to seal small leaks which can cause pressure loss and boiler breakdowns. The liquid can be used throughout the central heating system to seal small leaks & weeps without the need to drain the system and can seal leaks which are in inaccessible places.

The F4 leak sealer will not cause blockages in pumps, air vents or other safety devices and is compatible with all metals and materials commonly used in central heating systems.

The Fernox F4 also available in an Express Leak Sealer Aerosol (265ml).


The FERNOX 56603 LEAK SEALER F4 (500ML) is a genuine, brand new Ferroli Boiler Spares product, covered by a Ferroli Boiler Spares manufacturer's guarantee.

Available for same day despatch if ordered before 7pm (Monday – Friday), otherwise despatching will be on the next working day. For the delivery options available for this product, please add it to your Shopping Basket or see our delivery options page.

Not what you're looking for? Try our unique Spares Finder tool or you can view all Ferroli Boiler Spares products.

For advice on this or any product, please call us on 0330 123 3707, email us at web@dhsspares.co.uk, or see additional ways to contact us here.

  • Brand: Ferroli Boiler Spares
  • Name: FERNOX 56603 LEAK SEALER F4 (500ML)
  • MPN: 56603
  • Our Part No: 3500006
  • Categories:
  • Availability: In stock - Next day delivery available
  • Despatch: Same day despatch (before 7pm Monday – Friday)
  • Condition: Brand new
  • Guarantee: Yes
  • Returns: 45 days

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Why buy from Direct Heating Spares?

There are many great reasons to choose us over our competitors!

  • Trading since 2006, we are the UK's top supplier of boiler and heating spares.
  • Official stockists for over 100 leading UK and European brands.
  • Over 20,000 parts stocked in our UK warehouse located in Chorley, Lancashire.
  • We only stock genuine, brand-new items, unlike other websites that list reconditioned or replica/copy parts.

  • Competitive pricing with a secure checkout and a choice of payment methods.

  • Late order cut-off time of 7pm (Monday – Friday) for same day despatch.
  • We offer multiple options for delivery and collection.
  • Our team are available every day (excluding bank holidays) should you need support.
  • Not just spares specialists – we also sell other product ranges too, including electrical, consumables, and trade essentials.
  • Generous returns policy of 45 days as standard.
  • We are passionate about giving back to charity.

We offer several delivery options, leveraging our long-standing relationships with trusted and reputable UK couriers.

We also partner with UPS to allow you to collect your order from over 3,000 Access Points across the country at your convenience, including local shops and newsagents.

The full selection of these will be shown at the Basket stage. Simply add your desired product(s) to your Basket and the most appropriate delivery options will be dynamically calculated for you.

We despatch orders up to 7pm (Monday – Friday). Due to our large stockholding, your product(s) will likely be suitable for next day delivery in the vast majority of cases.

Please see our Delivery Options page for more information.

We are proud to offer a generous returns policy of 45 days as standard to all online customers.

Please see our Returns Policy here for more information and exclusions.

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