We use cookies to help you navigate efficiently and perform certain functions. You will find detailed information about all cookies under each consent category below.
The cookies that are categorized as "Necessary" are stored on your browser as they are essential for enabling the basic functionalities of the site. ...
Necessary cookies are required to enable the basic features of this site, such as providing secure log-in or adjusting your consent preferences. These cookies do not store any personally identifiable data.
Functional cookies help perform certain functionalities like sharing the content of the website on social media platforms, collecting feedback, and other third-party features.
Analytical cookies are used to understand how visitors interact with the website. These cookies help provide information on metrics such as the number of visitors, bounce rate, traffic source, etc.
Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors.
Advertisement cookies are used to provide visitors with customized advertisements based on the pages you visited previously and to analyze the effectiveness of the ad campaigns.
The HFT® Pipestoppers® Range of Aluminium Plugs can be used to leak testing, isolation, sealing, stopping and weld purging of pipes.
Here are some of our Frequently Asked Questions.
1.0 Can the plugs be used as a permanent stopper in pipes?
HFT Pipestoppers® Aluminium Test Plugs can be used effectively as a permanent stopper. The wings can be cropped to prevent tampering.
2.0 Will HFT Pipestoppers® Aluminium Drain Test Plugs withstand attacks from various acids, alkalis and chemicals?
Technical data sheets about the chemical resistance of different materials is available on request.
3.0 What if HFT Pipestoppers® natural rubber rings deteriorate in the presence of my special chemicals, gases or fluids?
Synthetic sealing rings are available, made from nitrile, neoprene, silicone and viton rubbers which will resist attack by many harmful products.
4.0 What is the maximum working temperature for the HFT Pipestoppers® Aluminium Test Plugs and Stoppers?
The natural rubber rings can be used up to 70˚C (158˚F) in continuous use.
For higher temperatures, we manufacture rings made from silicone that can be used up to 300˚C (572˚F) and viton, which can be used up to 350˚C (662˚F).
Technical data sheets about the resistance of various rubbers to all temperatures and materials are available on request.
5.0 I have a hole to seal, where your plug won't quite seal well enough, but the next size up is too big. Do you have any in between sizes?
The user can extend the range of each plug by a few millimetres by using an exterior rubber seal on top of the ring provided.
More details are available on request.
6.0 Can I have the plugs made as a branded product?
Yes, we can supply the screw caps in your own house colours as well as black or white. Caps can be provided with your name, initials or logo printed on them.
7.0 What pressures can the plugs withstand?
A pressure chart for HFT Pipestoppers® Aluminium Testing Plugs is available. Plugs can be braced to assist in greater stability.