Box section end caps are a popular and widely used type of tube plug or insert, commonly found in all manner of structural systems technologies. They're particularly handy in various types of aluminium modular profile systems - especially in the sorts of flow racks, frames and mounting/housing assemblies used to support electronic components and devices in a wide variety of throughout clean rooms, offices and hospitals.
Our full range of tube stops and plugs, including many different shapes, styles and sizes of box section end caps, is sourced from leading manufacturers such as FlexLink, Rose+Krieger, and our brand RS PRO.
This type of end cap is a simple plastic (polyamide or PE) tube insert - sometimes called a square bung, foot plug, tube cap or tube end plug - that's used to seal off a ‘box section' or length of square aluminium tubing in furniture, devices or rack mounting assemblies.
Sealing off the open ends of these hollow tubes in a frame or flow rack serves multiple practical purposes, including:
Most square tube caps are easy to push-fit and insert by hand, being constructed to include a series of horizontal internal ribs that help provide a secure and flexible fitting for the appropriate tube size.
Our box section end caps are available in square tube and strut profiles ranging from 20mm to 80mm.