
Rectangular Tube Inserts
Rectangular Tube Inserts are specially designed components used to seal and protect the open ends of rectangular metal tubing and box sections. Made from high-quality LDPE plastic (Low-Density Polyethylene), these inserts provide a durable and cost-effective solution for covering exposed tube ends, preventing damage, and reducing the risk of moisture ingress. Available in a wide range of sizes from 10mm to 150mm, they are ideal for industrial, commercial, and domestic applications.
These inserts feature a ribbed design that ensures a tight and secure fit, even across varying wall thicknesses. Whether used for finishing furniture, protecting structures, or enhancing the appearance of metal frameworks, our Rectangular Tube Inserts offer a reliable solution that is easy to install and long-lasting.
Selecting the Right Rectangular Tube Insert
To ensure the correct fit, simply measure the Outside Dimensions and the Wall Thickness of your rectangular tubing accurately. Subtract the Wall Thickness value from the Outside Dimensions. This will give you the "To Fit Tube" size needed. Our inserts are designed to provide some leeway with sizing thanks to their flexible ribbed structure.
If you need help selecting the right size, our expert team is available to assist you. Additionally, business customers can request a free sample to test the fit before placing a bulk order.
Key Product Features
- Manufactured from high-quality LDPE plastic for strength and durability
- Ribbed exterior provides a secure, long-lasting fit
- Available in sizes ranging from 10mm to 150mm
- Colour options include black, white, grey, and chrome
- Quick and easy installation by hand or with light tapping
Available Styles
Chromed Rectangular Tube Inserts
For a high-end finish, our Chromed Rectangular Inserts are an excellent choice. Designed with a polished chrome effect, these inserts are perfect for furniture, display units, and modern architectural applications where aesthetics are a priority. They provide all the functionality of standard plastic inserts while offering a premium, professional look.
Thin Head Rectangular Tube Inserts
Featuring a low-profile head, Thin Head Rectangular Inserts are designed for applications where a minimal projection is required. These inserts sit flush with the tube, creating a seamless finish ideal for furniture manufacturing, retail displays, and other precision applications where aesthetics and functionality are key.
Large Rectangular Tube Inserts
For larger applications we offer rectangular tube inserts in sizes ranging from 40mm up to 150mm. These inserts provide extra strength and durability, making them suitable for industrial environments, structural frameworks, and commercial-grade applications where impact resistance is required.
Common Uses
- Sealing and protecting the ends of rectangular tubes and box sections
- Preventing the accumulation of dirt, moisture, and debris inside tubing
- Used in furniture manufacturing to create a clean, professional finish
- Ideal for construction and metal fabrication to cap exposed tubing
- Providing a stable, non-marking base when used for table and chair legs
Need Assistance?
Do you have a question about our Rectangular Tube Inserts? Our team is happy to help! Call us today on 01233 713 581 for expert advice, or request a free sample to test the fit before making a bulk purchase.

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