
Square Angled Tube Inserts
Square Angled Tube Inserts are designed to provide a secure, durable, and professional finish to square tubes, pipes, and box sections. Manufactured from high-quality LDPE plastic (Low-Density Polyethylene), these inserts offer a reliable push-fit solution for sealing open tube ends while also serving as replacement chair feet for furniture with angled legs.
The unique angled base allows furniture legs to make full contact with the ground, increasing stability and weight distribution. This makes them particularly useful for school chairs, office seating, workbenches, and industrial furniture. Additionally, by sealing the tube ends, these inserts prevent moisture, dust, and debris ingress, reducing the risk of internal corrosion and prolonging the lifespan of your equipment.
Choosing the Right Size
To ensure a perfect fit, selecting the correct size of Square Angled Tube Inserts is essential. Follow these steps:
- Measure the outside diameter of your square tube.
- Determine the wall thickness of your tube.
- Subtract the wall thickness from the outside diameter to find the correct ‘To Fit Tube' size.
Our inserts are available in sizes from 12mm to 23mm, covering a wide range of applications. If you are unsure which size to choose, our expert team is available to assist. Business customers can also request a free sample to test the fit before placing a bulk order.
Key Features & Benefits
- Durable LDPE plastic construction – Designed for long-lasting performance and resistance to wear.
- Angled base for sloped legs – Ensures full contact with the ground for better stability.
- Ribbed shank for a secure fit – Holds firmly in place without adhesives or fixings.
- Prevents floor damage – Reduces scratching and noise when moving furniture.
- Easy push-fit installation – No tools required for quick and hassle-free fitting.
Common Applications
- Furniture feet replacements: Ideal for chairs, tables, and benches with angled square legs.
- Office and school furniture: Prevents wear and improves stability on sloped seating.
- Industrial and workshop equipment: Protects tubing from internal contamination and extends lifespan.
- Retail displays and shelving: Provides a neat, professional finish while securing tube ends.
- Outdoor furniture and structures: Prevents water ingress and corrosion in exposed environments.
Why Choose Square Angled Tube Inserts?
Square Angled Tube Inserts offer a simple yet highly effective solution for both protecting tubular structures and improving furniture stability. Whether you are refurbishing school chairs, upgrading office furniture, or sealing structural tubing, these inserts provide a low-maintenance, long-term solution.
Designed for ease of use, these inserts feature a push-to-fit installation, ensuring quick application without the need for additional fixings. Their strong grip and angled base make them a reliable choice for customers looking to improve durability and safety.
Need Assistance?
Do you have a question about Square Angled Tube Inserts? Our team is ready to help. Call us on 01233 713 581 today for expert advice or request a free sample to ensure a perfect fit before you buy.

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