Rectangular tube insert 80×120 mm, black, wall thickness 2.0–4.0 mm
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Rectangular tube insert 80 x 120 mm, made of black polyethylene. Internal section height 26.0 mm, external section height 5.8 mm. Core dimensions 62.0 x 101.5 mm, rib dimensions 76.0 x 115.3 mm. Weight 0.0775 kg. For closing the ends of rectangular tubes.
Product code: 003-131
Product features
[PIM] zaslepki-prostokatne #1027
- Profile [mm] 80×120
- Colour Black
[PIM] zaslepki-do-rur-i-profili #1025
- Shape Rectangular
- Profile [mm] 80×120
- Colour Black
Description
Rectangular tube insert 80×120 mm, black, wall thickness 2.0–4.0 mm

The black Rectangular tube insert closes the open end of a hollow section. It is designed for tubes with nominal dimensions of 80 x 120 mm and accommodates a wide range of wall thicknesses, allowing one type of insert to fit different tube variants.
The insert is made of polyethylene, a material commonly used for tube finishing components. The internal section with ribs fits inside the tube, while the external flange sits against its end face. The black colour provides a consistent, understated finish at the tube ends.
Applications and selection
- closing the ends of rectangular tubes in load-bearing structures, frames and supports
- protecting the open tube section from dirt
- finishing tube edges in mounting structures
Inserts of this type are usually fitted by pressing them into the open end of the tube. When selecting an insert, check the nominal tube dimensions and wall thickness, as these determine how the ribs fit inside the tube.

The product is sold individually, allowing you to order exactly the number of inserts needed for the job. Its low weight and small parcel size simplify storage and shipping of smaller quantities.
Detailed dimensions of the external and internal sections, core and ribs are listed in the tables below. Compare them with the tube specifications before purchasing.
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