Square tube insert 40×40 mm, anthracite, wall thickness 3.0–5.0 mm
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Square tube insert for 40 x 40 mm tube, made of polyethylene, anthracite (RAL 7016). Tube wall thickness 3.0–5.0 mm. External section height 5.0 mm, internal section height 19.0 mm. Core dimension 27.1 mm, rib dimension 35.4 mm. Weight 0.01015 kg.
Product code: 003-026
Product features
[PIM] zaslepki-kwadratowe #1026
- Profile [mm] 40×40
- Colour Anthracite grey
[PIM] zaslepki-do-rur-i-profili #1025
- Shape Square
- Profile [mm] 40×40
- Colour Anthracite grey
Description
Square tube insert 40×40 mm, anthracite, wall thickness 3.0–5.0 mm

The Square tube insert closes the open end of a hollow section and gives it a neat, uniform finish. It is suitable wherever exposed ends of steel or aluminium sections need to be protected from dirt and finished flush with the structure.
The component consists of an external flange that covers the edge of the tube and an internal ribbed insert that is pushed into the tube opening. Inserts of this type are fitted by pressing them into the end of the tube; the ribs adapt to the interior and help hold the insert in place.
Applications and selection
- Protecting open ends of square tubes in structures, frames and supports
- Neat finishing of exposed mounting components
- Selection based on the tube's external dimensions and wall thickness
- The dark anthracite shade matches tubes and components in similar colours

Before ordering, measure the actual external dimensions of the tube and its wall thickness, as these two values determine the correct choice of insert. A tube wall thickness outside the range specified for the insert may result in a loose or overly tight fit.
Polyethylene inserts are commonly used as lightweight finishing components in furniture, steel structures and technical equipment. At tube ends, they help prevent dirt from entering and protect against cuts from sharp cut edges.
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