Sentinel Leak Sealer 1L

By Sentinel Product code: 87634 Pack size: Each

Product Details

Ideal for sealing small leaks or weeping joints on all types of indirect central heating systems. Easy-to-administer solution and will not cause blockages within the system.

Technical Specification
Brand Sentinel
Manufacturer ID LS-12X1L-GB
Safety Data Sheet click here
Type Leak Sealer
Volume (L) 1
Volume (ml) 1000
Container Type Liquid
Delivery details

DELIVERY OPTIONS (UK mainland only)

Next Day Delivery – £5.00 or FREE for orders over £25

  • Order before 7pm Monday to Thursday for next business day delivery
  • Order Friday to Sunday before 5pm for Monday delivery
  • Orders placed after Sunday at 5pm will be delivered the following Tuesday
Pre-12pm Delivery – £10.00 to arrive before 12pm on the scheduled days above
Saturday Delivery – £10.00 or £5.00 for orders over £25 & FREE for orders over £75 (order by 6pm Friday)
Sunday delivery – £10.00 or £5.00 for orders over £25 & FREE for orders over £75 (order by 4pm Saturday)
Times may vary for items being delivered directly from the supplier. For more information, please visit our delivery information page below.
Items over 30kg can only be delivered from Monday to Friday. If ordered before 6pm, please allow up to two business days for delivery. Orders placed after 6pm Thursday will be delivered after the weekend.
More about Delivery
Click & Collect details

Collection Details

Our opening times are 7am-8pm Monday-Friday, 7am-6pm Saturday and 9-4pm Sunday. Please check your local store is open on the store locator page, before you visit.

Once you have placed your order online, we’ll have it ready for you at the store you have selected in as little as 5 minutes. We will hold your order for 14 days, after which we will automatically generate a refund to the payment type you used to place the order.

Don’t forget your mobile number – Make sure your mobile number is added so that we can text you when your order is ready to collect. Please wait for your text or email before coming to collect your items.

If an item is eligible for Next Business Day Collection in store, the order must be placed by 7pm Monday to Thursday for collection the next day. Orders placed after 7pm on Thursday, and up to 5pm on Sunday, will be available for collection on Monday. For larger items over 30kg, please allow two business days.

Reviews
Sentinel Leak Sealer 1L is rated 4.6 out of 5 by 37.
Rated 5 out of 5 by from Does it work? Used this in my Central heating system to stop a leaking pipe underneath floor boards. Early days but seems to have worked as the boiler pressure isn't dropping as quick as it did before using the leak sealer.
Date published: 2023-01-31
Rated 5 out of 5 by from Leak Sealer Great product does what it says on the bottle
Date published: 2022-10-18
Rated 5 out of 5 by from It seals leaks It does what it says on the label. I had drained down my heating system in my holiday home with tiled and concrete floors. There was a small leak between rooms underground which came up by pipework in the toilet. A full litre was put in prior to refilling the system and it is holding pressure and no water around the pipework.
Date published: 2022-03-03
Rated 5 out of 5 by from Good. Pressure dropping about quarter bar a week. 3 weeks have passed and it seems to have stabilised.
Date published: 2021-12-22
Rated 1 out of 5 by from sentinel leak sealer it has not sealed the pinhole; i had better experience with fernox.
Date published: 2021-12-21
Rated 5 out of 5 by from Click and collect at Toolstation. No probelms at all. Good product and great service.
Date published: 2021-11-02
Rated 5 out of 5 by from worked thankfully leak i was unable to find so tried sentinel leak sealer and it worked. a potential headache sorted
Date published: 2021-04-14
Rated 5 out of 5 by from Sealed Small Radiator Leak Poured into radiator which had a small leak using a hose and a funnel via the air vent hole. Refilled the system ran it and the leak was sealed. No problem. Cost effective and value for money.
Date published: 2021-03-16
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