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La-Co LAC-42018 Pipe Thread Compound 240ml Product Code: 53863

For threaded pipes carrying hot or cold water, gases, steam, air, petrol, oils and refrigerants. Solvent and water-free, contains teflon and PTFE. Brushes on oily, wet or cold threads. Disassembles easily. Will not dry out or harden.
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Safety Data Sheet
Additional Information
Technical Specification
  • Brand : La-Co
  • Product Type : Pipe Thread Compound
  • Volume : 240 ml
  • Total Product Weight : 399 kg
  • Model No : LAC-42018
  • Pack Size : 1
  • Manufacturer Guarantee : 1 Year Guarantee
  • Pieces in Pack/Case : 1
Product Contents
Delivery & Returns


Standard delivery: €15

Free delivery on all orders over €70.00

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Hopefully you won't need to return an item, however, if you do, it is our aim to make this as simple as possible. By following the guidance below you can help us to help you when a product is not what you expected, or is faulty. Your statutory rights are not affected by this guidance.


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€13.95 Incl. 20% VAT

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La-Co LAC-42018 Pipe Thread Compound 240ml is rated 4.2 out of 5 by 17.
Rated 5 out of 5 by from Stopped the persistent leak Had a leak from the U-bend under my sink which was reluctant to stop. An application of this thick compound and, presto, no more leak!
Date published: 2019-02-08
Rated 5 out of 5 by from Excellent stuff I have used this on both mains water "tap tails and compression fittings" and central heating "radiators and fittings" this stuff seals very well and had no leaks and has replaced using and PTFE ever.. one thing to note is for this to effectively seal you need to use the brush that comes with the pot spread in from the bottom of the fitting to the end "fill the thread gaps untill they are even with the thread top" other than that lovely stuff
Date published: 2018-06-15
Rated 5 out of 5 by from Works on pool pump fiting Worked perfectly to refit the outlet pipe to a swimming pool pump. These are renowned for their difficulty in getting water tight. Some PTFE tape at the top and this at the bottom made the fitting easy to attach. Hand tight only with no seepage.
Date published: 2018-05-21
Rated 1 out of 5 by from Didn't work for me. Used this product to seal the thread on 1 1/4 Bsp pipe fittings. Of the five I used it on two of them leaked afterwards. Replaced it with ptfe tape with no further leaks. Wish I'd saved my money.
Date published: 2018-05-10
Rated 4 out of 5 by from Thread compound We have struggled to seal joints from our petrol tank in our Motor Glider. LA-CO sealed it first go, very very pleased
Date published: 2018-03-13
Rated 5 out of 5 by from Job saver This stuff is brilliant. Has made my plumbing water tight every time I’ve used it.
Date published: 2018-03-01
Rated 5 out of 5 by from Instant sealing! This compound is easy to apply and needs no curing time. Acts a lubricant when assembling and wipes clean. It maintains a good seal with compressed air unions tested up to 10 bar. Much better than teflon tape. Highly recommended.
Date published: 2016-01-30
Rated 5 out of 5 by from For serious pipework! Very similar to the US Black Swan product, which we used until this came along. First class for a wide range of pipework, though it needs to be used in conjunction with PTFE tape or thread for really large threads. Built-in brush is handy. Slight overkill for domestic plumbing, but works well on any threaded pipe fittings, especially malleable iron.
Date published: 2015-11-22
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