30x20mm Rectangular Ribbed Tube Insert, 1-2mm

These 30x20mm rectangular ribbed tube inserts are designed to provide a clean, secure finish for rectangular or oblong tube sections. Thanks to the flexible lateral ribs running around the shank of the insert, they should be suitable for tube wall thickness of between 1 to 2mm metric (14-20 gauge imperial), unless otherwise stated. 

Manufactured from durable LDPE plastic, they are commonly used as protective end caps, tube feet, and finishing plugs across furniture, fabrication, and light industrial applications. They're designed to retain themselves inside tube, with the head sitting over the outer ends of the tube or box section, sitting flush with the outside edges of the tube, providing a neat finished appearance.

Key Features:

• Fits hollow tube profiles with a 30x20mm external dimension
• Manufactured from resilient LDPE
• Ribbed design for secure fitting
• Helps protect floors from exposed tube ends, reducing noise and marking
• Available in multiple colours
• Designed primarily for indoor use but can be used outside but not UV stabilised as standard

Technical Information:

• Tube or box section profile: Rectangular / Oblong
• External tube size: 30x20mm
• Tube wall thickness: 1-2mm
• Suggested internal fit: 26x16mm to 28x18mm approx. (different factors affect this, including coatings, weld lines and tolerance)
• Material: Low-Density Polyethylene (LDPE)
• Fitting type: Push-fit ribbed insert

Suitable for:

• End Stops for Office and Workshop furniture
• Foot Bungs for Chairs and Tables
• Plastic Stoppers for square hollow tubes and box section
• Feet for Display Systems
• Post Caps for Gates and Railings
• Tube End Caps for Light Fabrication projects
• Protective Tube Ends for Finishing
• Ribbed Knock In Inserts for POS and Shopfitting

Tube inserts are always listed the same way that tube is listed because the head of the insert needs to marry up with the outside edges of the tube.  They often come in a variety of wall thicknesses and gauge sizes but if you're unsure on fit, you can click the 'Request Sample' button, or for help measuring your tube, try out this useful sizing pdf.

If this isn't quite right for your application, if for instance you want inserts or feet for an angled chair leg or just simply prefer something with a more enhanced cosmetic head than a bog standard flat insert, then take a look at our range of domed, angled or chamfered head inserts.  We've also got Threaded Inserts, External Fitting Caps and Stand off Feet but if you're not finding what you're needing then just give us a call, drop us an email or use the livechat facility.

   Why not submit your own review?

Submitted by Mr Graham Roper (3/12/2025)
Exactly what we needed and so easy to get hold of when we run out.

Quality
Accurate Description
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Overall Score	5.0 / 5

Submitted by MIke (8/09/2022)
excellent company to deal with

Quality
Accurate Description
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Overall Score	5.0 / 5

Submitted by Mr C K (14/08/2020)
Very pleased with Product and service.

Quality
Accurate Description
Performance/Suitability
Value for money
Overall Score	5.0 / 5

Submitted by David Burton (18/07/2020)
Needed for ends of roof bars which were missing, bit over size but as they are fluted went in with a gentle tap.

Quality
Accurate Description
Performance/Suitability
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Overall Score	5.0 / 5

Submitted by Frank Williams (27/02/2019)
Perfect fit, completes the job.

Quality
Accurate Description
Performance/Suitability
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Overall Score	4.8 / 5

Submitted by Frank Williams (14/02/2019)
Does exactly what I wanted it to do. Seals the tube and avoids damage to hands when handling.

Quality
Accurate Description
Performance/Suitability
Value for money
Overall Score	5.0 / 5

Submitted by Oliver Stanton (17/05/2017)
FAST,EFFICIENT,SPOT ON.

Quality
Accurate Description
Performance/Suitability
Value for money
Overall Score	5.0 / 5

Submitted by Bill H (6/05/2014)
Good quality, good fit, exactly what I expected.

Quality
Accurate Description
Performance/Suitability
Value for money
Overall Score	5.0 / 5

Frequently asked questions about this item are shown below. Do you have a question? Submit FAQ

Q: Hi, I am interested in the 20X30mm end caps. I am wondering what the corder radius is of the rectangle? And if there is a CAD model available, for me to put into the assemblyand BOM for specification requirements. Regards, Gary

A: Thankyou for your question. I can confirm that the Radius is R 1,9 – R 2,2 mm on this particular tube insert. Hope that helps The BPF WebSales Team

Q: Hi I would like to know the material is for this plastic end cap. Many thanks

A: Low Densite Polyethylene (LDPE)

 Tube Fittings Buying Guide