Square tube insert 25×25 mm, grey
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Grey polyethylene Square tube insert, 25×25 mm. Tube wall thickness: 1.0–2.5 mm. External section height: 4.4 mm; internal section height: 13.0 mm. Weight: 0.0039 kg. For closing the ends of steel and aluminium tubes.
Product code: 002-691
Product features
[PIM] zaslepki-kwadratowe #1026
- Profile [mm] 25×25
- Colour Grey
[PIM] zaslepki-do-rur-i-profili #1025
- Shape Square
- Profile [mm] 25×25
- Colour Grey
Description
Square tube insert 25×25 mm, grey

The grey Square tube insert 25x25 mm is a simple finishing component for closing the open ends of square steel and aluminium tubes. The flat head covers the wall edge and gives the end of the tube a neat, closed finish.
The insert is made of polyethylene, a material commonly used for finishing products because it is lightweight and easy to press into the tube. The internal section with fins fits into the open end of the tube, and the fins press against its walls to hold the insert in place. The product is intended for tubes with a wall thickness within the range specified.
Applications
- closing the ends of square tubes in support structures and frames
- finishing balustrades, fences, frameworks and metal furniture
- protecting sharp edges of cut tubes
- neatly closing visible tube ends in installations and lightweight structures
When selecting an insert, compare the nominal tube size and wall thickness with the specification. Inserts of this type are installed by pressing them into a clean, deburred tube end cut square, allowing the head to sit flush against the edge.

The insert consists of a flat head and an internal section with fins. The head protrudes above the tube edge, while the internal section fits inside the tube. This allows you to assess, before ordering, how deeply the insert will sit and how far it will protrude above the tube. The grey finish is suitable where the end caps need to complement neutral-coloured, steel or aluminium structures.
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