
K Flex pipe insulation is a low-cost solution to lagging your pipes. Made of nitrile rubber, these pipe insulation sections by K flex help reduce energy costs by preventing heat loss or gain in all types of pipework.
Nitrile rubber foam insulation is flexible and light in weight and the best part is that this pipe lagging comes with self-adhesive strips, which means you can install it yourself even if you are an amateur DIY'er.
As sometimes Armaflex lagging is used as a synonym for Nitrile rubber insulation as a whole, it is worth pointing out that K flex is made from the exact same material as Armaflex pipe insulation.
This self-seal, nitrile rubber foam pipe insulation helps to increase the life and performance of pipework by reducing heating requirements and effectively shielding the pipework from corrosion if installed correctly. It is suitable for use in all aspects of residential, commercial and industrial applications.
It can also be used to insulate pipework equipment, tanks and used as valve insulation. K flex pipe insulation gives an energy-saving performance and has an inherent resistance to microbial growth and moulds. Nitrile rubber pipe sections protect the pipes from dirt, rust, condensation, freezing and other issues.
Product Specifications:
- Length: 2m
- Insulation Thickness: 9mm, 13mm, 19mm and 25mm
- Pipe Diameter: 15mm, 22mm, 28mm, 35mm, 42mm, 48mm, 54mm, 60mm, 67mm, 76mm and 89mm
Key Features:
- K Flex pipe insulation provides cost-effective thermal insulation for HVAC and plumbing applications.
- Self-adhesive strips ensure fast and easy application on pipework.
- Closed-cell rubber pipe insulation has an in-built water vapour barrier.
- Comes in 2m length, instead of the standard 1m length for pipe lagging. Helps reduce thermal bridging
- Rubber foam pipe sections ensure substantial energy savings when used on hot water pipes.
- Their in-built vapour barrier ensures protection against rust, condensation and other issues
- K Flex pipe insulation can be installed in extremely tight areas.
- Closed cellular structure in nitrile rubber sections ensures high technical performance.
- K Flex pipe insulation is resistant to moulds, fungi and bacteria.
- Pipe lagging is light and flexible.
Applications:
- Nitrile rubber pipe insulation can be used in HVAC applications for residential, commercial and industrial applications.
- They are also used in plumbing, tanks, pipe fittings and water ducts.
- Nitrile rubber pipe insulation is also used in oil & gas industries and other industrial processes.
- For more examples on how K flex pipe insulation is used please check out Kflex's official website here
Pipe Size Chart:

Please note - The table is for reference only. We recommend measuring with a tape to determine actual OD
- K Flex makes the most economical pipe insulation on the market today.
- Self-seal means no messy adhesive and low labour costs.
- K Flex is very fast and easy to install, even for an amateur DIY'er.
- Nitrile rubber is closed-cell, meaning it effectively resists moisture.
- Suitable for applications as low as -200 °C
- Made from the same material as Armaflex pipe insulation.
- Good thermal insulation for the price.
- K flex pipe insulation comes in 2m lengths
| Insulation Type | Self-seal Pipe Insulation |
| Brand | K Flex Insulation |
| Length | 2m |
| Thickness Available | 9mm, 13mm,19mm and 25mm |
| Material | Foamed nitrile rubber |
| Thermal Conductivity | 0.040 W/mK at 40°C. |
| Service Temperature | -50 °C to +85 °C |
| Fire Classification | Class 'O', Euroclass B |
| Free Delivery Terms | |
|---|---|
| Order Value | Free Delivery Condition |
| Up to £325 | .£15.00 |
| Above £325 | Free delivery |
Returns/Refunds And Cancellations:
- You can cancel your order and get a full refund anytime before we confirm your order via email.
- Orders cancelled after the order confirmation is sent, may attract a restocking fee.
- If you want to return insulation that was ordered in excess or not of use anymore, you can return them within 3 weeks from the date of receipt, provided they are unused and in a resalable condition. Please contact us via email and we will assist you accordingly.
- If the product is damaged, then you are within your rights to claim an exchange or a refund. For more information, please refer to our delivery information page.
For more information on returns and deliveries, please refer to our delivery information page.

