Knobs, Feet, Inserts, Handles

At Trebork, we supply quality plastic elements right across the UK

Plastic End Caps for Steel Tubing

Here at Trebork, our round plastic end caps and tube inserts are on of our most popular items in stock and are available in a variety of shapes and colours. We supply injection-moulded plastic end caps which are specifically designed for steel tubing. Our round plastic end caps come in black, grey, and white with sizes varying from 10mm to 90mm. We also supply Nominal Bore tubes End Caps that are available from 1/2” to 3”. Whatever the purpose, our online range of plastic bungs and inserts are made from the highest quality materials from trusted manufacturers. The plastic end plugs for round tubing are available flat, domed, half-domed, and chrome plated.

Quality Guaranteed

The plugs we sell are made from polyethylene which offers universal appeal and a number of application possibilities. Polyethylene is known for its low abrasion and resistance to corrosion from environmental stress. It’s also got high dimensional stability at low temperatures, good chemical resistance, low water absorption and is resistant to changing weather conditions and UV radiation.

A Variety of Uses

Our round plastic end caps have been designed and tested to accommodate steel profile structures, steel tubing, pipes, hollow section and box sections, tubes, chair legs, chair foot, bench foot, fencing systems, some machines and devices, workshop furniture, playground equipment and other elements of garden architecture. They are used in the furniture, machinery, electrical engineering and construction industries. So, if you’re looking for quality round plastic end caps and inserts, choose Trebork for all your accessory needs. We are based in Stoke-on-Trent but deliver our quality products right across the UK.

What people are saying about Trebork Ltd

Our customers love Plastic End Caps. Here are some of the featured reviews we’ve received.

      
   *trebork*
   15055 Ebay reviews 
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   eBay automated feedback 
 6 October 2026
 
 
 Verified Order delivered on time with no issues
  
 
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   eBay automated feedback 
 6 October 2026
 
 
 Verified Order delivered on time with no issues
  
 
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   4***m 
 5 October 2026
 
 
 Verified a1
  
 
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   eBay automated feedback 
 5 October 2026
 
 
 Verified Order delivered on time with no issues
  
 
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   eBay automated feedback 
 5 October 2026
 
 
 Verified Order delivered on time with no issues
  
 
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   eBay automated feedback 
 5 October 2026
 
 
 Verified Order delivered on time with no issues
  
 
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   m***- 
 5 October 2026
 
 
 Verified Perfect
  
 
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   ***** 
 5 October 2026
 
 
 Verified Thank you
  
 
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   ***** 
 4 October 2026
 
 
 Verified Super service, thanks!
  
 
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   9***9 
 4 October 2026
 
 
 Verified Fantastic seller I contacted the seller to ask where my item was as I had not received it. The seller sent another item 1st class had it the next day thank you seller
  
 
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   w***a 
 3 October 2026
 
 
 Verified As described :)
  
 
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   a***q 
 3 October 2026
 
 
 Verified Great thanks
  
 
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   ***** 
 3 October 2026
 
 
 Verified great, thanks
  
 
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   o***k 
 3 October 2026
 
 
 Verified delivered on time, fits well
  
 
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   eBay automated feedback 
 3 October 2026
 
 
 Verified Order delivered on time with no issues
  
 
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   m***n 
 3 October 2026
 
 
 Verified Excellent fit. My step stool no longer wobbles.
  
 
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   eBay automated feedback 
 3 October 2026
 
 
 Verified Order delivered on time with no issues
  
 
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   eBay automated feedback 
 3 October 2026
 
 
 Verified Order delivered on time with no issues
  
 
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   e***0 
 3 October 2026
 
 
 Verified Quick delivery
  
 
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   eBay automated feedback 
 3 October 2026
 
 
 Verified Order delivered on time with no issues
  
 
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   eBay automated feedback 
 3 October 2026
 
 
 Verified Order delivered on time with no issues
  
 
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   eBay automated feedback 
 3 October 2026
 
 
 Verified Order delivered on time with no issues
  
 
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   y***w 
 3 October 2026
 
 
 Verified Item as described and delivered quickly 👍🏼
  
 
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   eBay automated feedback 
 1 October 2026
 
 
 Verified Order delivered on time with no issues
  
 
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   ***** 
 1 October 2026
 
 
 Verified Great communication- simple return.
  
 
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   eBay automated feedback 
 30 September 2026
 
 
 Verified Order delivered on time with no issues
  
 
     Posted on Ebay  
   
   eBay automated feedback 
 30 September 2026
 
 
 Verified Order delivered on time with no issues
  
 
     Posted on Ebay  
   
   eBay automated feedback 
 30 September 2026
 
 
 Verified Order delivered on time with no issues
  
 
     Posted on Ebay  
   
   eBay automated feedback 
 30 September 2026
 
 
 Verified Order delivered on time with no issues
  
 
     Posted on Ebay  
   
   eBay automated feedback 
 30 September 2026
 
 
 Verified Order delivered on time with no issues
  
 
     Posted on Ebay  
   
   eBay automated feedback 
 30 September 2026
 
 
 Verified Order delivered on time with no issues
  
 
     Posted on Ebay  
   
   eBay automated feedback 
 30 September 2026
 
 
 Verified Order delivered on time with no issues
  
 
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   ***** 
 30 September 2026
 
 
 Verified Super fast dispatch ++++++++++++++
  
 
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   2***d 
 30 September 2026
 
 
 Verified Fast delivery 👍
  
 
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   eBay automated feedback 
 30 September 2026
 
 
 Verified Order delivered on time with no issues
  
 
     Posted on Ebay  
   
   eBay automated feedback 
 30 September 2026
 
 
 Verified Order delivered on time with no issues
  
 
     Posted on Ebay  
   
   -***1 
 30 September 2026
 
 
 Verified very fast delivery  great service
  
 
     Posted on Ebay  
   
   eBay automated feedback 
 30 September 2026
 
 
 Verified Order delivered on time with no issues
  
 
     Posted on Ebay  
   
   eBay automated feedback 
 30 September 2026
 
 
 Verified Order delivered on time with no issues
  
 
     Posted on Ebay  
   
   eBay automated feedback 
 30 September 2026
 
 
 Verified Order delivered on time with no issues

Welcome to Trebork

PLASTIC

Knobs, Feet, Inserts, Handles

Knobs, Feet, Inserts, Handles

At Trebork, we supply quality plastic elements right across the UK

What people are saying about Trebork Ltd

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