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Rectangular Tube Inserts

All of our Rectangular Tube Inserts are made from a selection of strong and reliable materials, some of which include LDPE Plastic & Aluminium Alloys. Commonly regarded as finishing or protection products these inserts are often used to cap the end of a Rectangular tube / section, hence their nickname within industry of 'Tube Caps'  due to the internal conservation that they provide. Along with their protection benefits, they are also recommended for functional uses such as installation into a table leg as an easy solution to extend or add height, especially when paired with an adjustable foot. Each of these Rectangular Inserts feature a ribbed shank, this allows it to easily fit a range of wall thicknesses and tube diameters as the ribs easily compress when fitted either by hand or hammer.

These Rectangular Inserts for tubes come in a range of styles and sizes to suit your specific needs and project requirements, please note that we are always able to offer custom sizing where necessary for a project. To view all currently available sizes or to request a free sample of any product, please scroll below before clicking through to your required listing. 

All of our Rectangular Inserts are available for free sampling where-required for large projects.

Benefits Of Using Our Rectangular Tube Inserts?
  • Manufactured from premium quality materials including LDPE & Aluminium
  • Ribbed shank to fit a variety of tube sizes from standard
  • Push fitting rectangular insert solution
  • Free samples available
Standard Rectangular Inserts have been split up into size ranges, these being: Check out our Rectangular Inserts for tubes guide for measurement tips.
Need help choosing your ideal Rectangular Tube End Caps? Call us today on 01233 713 581

Variations Of Rectangular Tube Inserts

Rectangular Inserts 10-38mm
Our Rectangular tube ends or Rectangular inserts for tubes as they are also widely referred to as are an excellent solution for use with Rectangular box sections as they can easily be placed up on the inside of the tube thanks to the ribs which hold tight on the exterior of the insert to act as a fixing to keep the insert firmly in place at all times.
Rectangular Inserts 40-76mm
Rectangular inserts for tubes up to 76.2mm are an ideal larger choice of insert that are most commonly used with posts and poles, for finishing purposes as well as to protect the structure and integrity to the inside of a tube. Also referred to as tube caps, these fit internally to any kind of Rectangular shaped tubing or sections without the need for fixings or adhesives.
Rectangular Inserts 80-150mm
These box section ribbed end caps are extremely popular within a number of industries as they are easily inserted into a tube with the ribs holding them firmly in place the whole time. Also known as Tube Caps, these are a widely used solution for both protecting and finishing the end of a tube, preventing ingress and providing a functional yet aesthetic finish that provides a number of internal and external benefits. Rectangular tube ends, as they are also widely called, are an ideal choice for the finishing of a tube and are also widely used to protect a tube, preventing ingress of any kind.
Chromed Rect. Tube Inserts
Our Chromed rectangular tube ends come with a clean, sleek chrome finish and have ribs on the exterior portion for the easy insertion up into the tube. Keeping the insert firmly in place, these ribs act as a fixing that prevents the need for any additional fastening or fixing, making this an even more cost effective solution.
Rect. Angled Tube Inserts
Our Rectangular angled inserts for tubes are a widely used rectangular tube end of Rectangular tube cap, these are regularly used with angled piece of tubular furniture to add grip or to act as a replacement foot. Alternatively these also have a further use as a finishing insert, protecting the inside of the tube, pole or pipe at the same time as providing a functional, effective finish.
Thin Head Rect. Tube Inserts
Our thin head rectangular inserts for tubes with a thin head are a discrete yet lightweight option for hiding the head of the insert on the end of a tube, this makes them ideal for finishing however can be used for use as replacement feet for Chairs and Furniture.
Rectangular Threaded Inserts
Rectangular threaded tube ends or threaded tube fittings, are some of our lesser known inserts due to their rectangular shape which is less common throughout a range of industries including furniture and automotive. They are regularly used with rectangular frames and tubes to provide a strong threaded area which allows for the attachment of external components such as adjustable feet, machine feet & screw in products. Each Rectangular type plastic threaded tube insert that we offer has ribs on its exterior to provide a tight fitting at all times, no matter what attachment. These slot in perfectly to provide additional thread attachment where-ever required, these could be adjustable feet or other attachments which hold in excellently at all times. These rectangular threaded tube ends are easily slotted into a tube to provide easy addition for external components, hence their nickname of fixings for feet (or threaded components).

Please click through to find all available product sizes.
For all relevant product information, or to view our available guides, please see the full category description above.


Welcome to Vital Parts
One of the largest and most trusted Plastic & Rubber Component Manufacturers in the UK.


Being one of the most trusted components manufacturers and distributors in the UK, we pride ourselves on providing our customers with the best services and products possible. Ensuring that we stay competetive by providing you with the best deal, along with free samples and secondary finishing services to give you the best outcome possible. As well as offering an excellent range of components we are able to manufacture to your specific requirements with a range of dip moulding, injection moulding, extrusions, rotational moulding and overmoulding techniques.


Why you should choose us for your Plastic, Rubber & Metal Component needs
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Free sampling available on most products
Excellent, friendly customer support on 01233 713581

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