Anyone who has ever connected PVC pipes in a sewage system without lubricating the seals knows what resistance means. Moreover, even if the end of the pipe can be inserted into the socket relatively easily, you have to consider the risk that you will have to dismantle the connected elements at some point, which can be extremely difficult without a lubricant. A special silicone-based lubricant paste is used to lubricate PVC pipes, but some people use, for example, dishwashing liquid. Find out why it is worth reaching for silicone grease and how to use a pipe lubricant correctly.
Check out the pipe lubricants at the Onninen wholesaler
Why is it worth using silicone grease when connecting pipes?
As we have already mentioned, pipes are connected using various products. Sliding pastes are commonly used. These are substances belonging to construction chemicals. They provide high slippage, necessary when connecting pipes and fittings. Specialized paste significantly facilitates the installation of socket sewage pipes. It prevents the socket of the PVC pipe and fitting from cracking. It increases the precision of the connections created and supports their durability and tightness. It also facilitates the disassembly of the pipe, fitting or sleeve and facilitates the pulling of cables. Additionally, the paste protects the seal against cracking, extending its service life. Even if a lot of time has passed since the installation, it will be possible to disassemble it safely. The entire system becomes less susceptible to failure.
Pipe lubricant is usually made on the basis of silicone (silicone oils). The key advantages of silicone lubricants include:
- excellent slip and high viscosity,
- impregnation of greased surfaces,
- resistance to extremely low and high temperatures,
- protection of seals against destruction,
- no risk of deformation or cutting of the seal,
- ability to displace water,
- protection of elements against corrosion and dirt,
- high resistance to solvents and many chemicals,
- safety for skin.
Silicone agents are also available in aerosol form. Many professionals reach for silicone sprays due to their convenience of use and cleanliness of work.
We often hear the opinion that a specialist lubricant can be successfully replaced with regular dishwashing liquid or even... cooking oil or margarine. For the safety of the water installation and its users, we recommend using only professional construction chemicals, factory-adapted to lubricate pipes. This is a small investment that can save us a lot of trouble. The prices of silicone lubricants in tubes start at just a few zlotys. It should be remembered that various "substitute" lubricants dry quickly, causing the elements to seize. They can also destroy rubber seals.
It is worth mentioning that a creamy silicone lubricant works best when the pipe is made of plastic, so it is smooth and flexible. In the case of concrete, reinforced concrete or stoneware pipes, silicone grease may not provide maximum effectiveness or efficiency. Although there are universal pastes available on the market for use on any pipe, it is better to use dedicated lubricants for connecting highly porous elements.
How do I properly apply lubricant to a pipe?
The method of using the lubricant is very simple and is described in detail by the manufacturer in the attached instructions or directly on the packaging. The elements to be connected should be in one line. After cleaning the spigot end of the pipe and the gasket in the socket, lubricate the elements with the lubricant and connect, completely pressing the end of the pipe into the socket.
Then we gently withdraw the pipe (by approx. 10 mm), thus creating an expansion gap, i.e. space for the pipe to expand due to thermal expansion. This operation is omitted in the case of non-socket pipes, which are connected using extension sleeves with expansion compensation. In the middle of the sleeve there is a plastic ring limiter.
Before applying grease, the pipes and fittings must be completely dry and their condition must be checked. The elements should be perfectly smooth, free of scratches. Scratches, especially deep ones, can reduce the tightness of the connection. The final stage of assembly work is always a tightness check.
It is important not to overdo the amount of lubricant used! Excessive use of lubricant may result in the preparation getting between the gasket and the cup groove and the gasket slipping and curling.
Weather resistance of pipe lubricants
Pipe lubricants based on silicone oils are resistant to the destructive effects of atmospheric factors, such as water, moisture, high and low temperatures, and often also to solvents and chemicals. They are suitable for use in difficult environmental conditions. Detailed information about the properties of a given product can be found on the packaging or in the description on the website.
Pipe lubricants at the Onninen wholesaler
In the Onninen installation wholesaler, a wide range of modern pipe lubricants awaits professionals and amateurs. Their compositions are based on silicone oils. Our assortment includes both greases and aerosols.
Too many choices? Contact us! We will help you find the right pipe lubricant and advise you on how to use it.