Free Delivery On Orders Over £50

Sentinel Internal Leak Sealer (1L)

Code: HCHE038
  • £11.33
Item in Stock | Usually dispatched within 24 hours
Want it by Friday 22nd October? Order within 6 hours, 3 minutes and choose 2 to 5 Day Delivery at checkout.

The Sentinel Internal Leak Sealer (1L) is an excellent and highly recommended product. This product is ideal for sealing small leaks or weeping joints on all types of indirect central heating systems. This solution is very easy to administer to weeping joints or pinhole leaks and is compatible with other Sentinel products. Using this product will not cause any blockages within the system.

  • Ideal for sealing small leaks or weeping joints
  • For use on all indirect central heating systems
  • Non-toxic & non-irritant
  • Suitable for all metals
  • Very easy to administer and will not cause any blockages
  • Sentinel Internal Leak Sealer 1L

Deliveries - 

Our normal delivery days are Monday to Friday excluding Bank Holidays, in most cases your item(s) will be dispatched same day providing we receive your order by 2pm excluding products marked 'Local Delivery Only'. We use reliable carriers such as the Royal Mail and DX and typically you can expect your item to arrive within 3 working days. However on rare occasions your delivery may take longer due to factors beyond our control.

Return within 14 days.

Returns Address - 

Trade Supplies Online

1 Standard Way


North Yorks



Refunds –

If you cancel your contract between us within the seven-day cooling-off period we will process the refund due to you as soon as possible and, in any case, within 30 days of the day on which you gave us notice of cancellation. In this case, we will refund the price of the goods in full, (excluding delivery charges). However, you will be responsible for the cost of returning the item to us. Products can only be returned if packaging is not broken and is unworn/ not used.

Faulty or Damaged – 

If a product is suspected to be faulty or damaged, please contact us within 24 hours of receipt and a replacement or refund will be arranged. If a product has been fitted and/or used and is suspected to be faulty, please contact us immediately and we will resolve the issue according to the manufacturers terms and conditions.

Free Delivery on orders over £50 Ts & Cs - 

Large (ugly freight) items are currently excluded from this offer i.e. wheelbarrows, ladders and cement mixers. Deliveries to Ireland, Northern Ireland, and UK Non-Mainland are also excluded.