Weldnut Plug | Silicone Rubber | Bakewell Nutter Plug | NTR-08.89-25BN


The Weldnut Plug / BAKEWELL NUTTER PLUG is specifically designed to mask threaded holes in weld-nuts, rivet nuts, rivet bushes and self-clinching nuts.

  • Colour coded for size
  • Reusable
  • M10
  • Brown

Available on back-order


Silicone Rubber Weld Nut Plug
  • Colour coded for size
  • Reusable
  • M10
  • Brown

Weld Nut Plug – Silicone Rubber

AFAC’s Weld Nut Plug is a pull through plug with a circular feature offering the option to protect a small area around the hole it is being used to mask. This is favourable on weld nuts where often the coating being applied is thicker. Weld nuts that are masked with weld nut plugs provide a better quality of finish and easier assembly once finished.

Used for:

  • Powder coating
  • Anodising
  • Electroplating
  • Hydrodipping

Next day delivery

Whatever purpose you want hollow bungs for, there are tons of options and most are in stock for next day delivery.

weld nut plug

Part Number"A" (mm)"B" (mm)ColourFitsAdd to Cart

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NTRL-10.45-40LB10.4540.00Light BlueCustom

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The weld nut plug is a simple design that provides customers with a device to mask threaded through holes like weld nuts. A snug fit either end and a lip that helps improve assembly efficiency.

Technical information
Its pull through design ensures a positive seal throughout the length of the thread during finishing processes, while the lip at the end prevents contamination of the lead-in to the thread.

Like all BAKEWELL products, the Weld nut plug is produced from heat resisting silicone rubber, colour coded by size for easy identification, making them ideal for use during electro-static powder coating and of other stoved finishes.

To mask a weld-nut, or similar fastener, the tail of the weld nut plug is passed through the hole in the nut. The end of the tail is pulled, drawing the larger diameter of the Weld nut plug into the hole. The stretching motion causes the body of the NUTTER PLUG to reduce in diameter. When the lip contacts the face of the nut, the tail is released. This allows the Weld nut plug to return to its original diameter, sealing the thread. The plugged nut assembly can now be coated.
After stoving, while the component is still warm, the Weld nut plug is removed by pulling on the tail again. This time the action will cause the lip to collapse into the nut, allowing the Weld nut plug to be withdrawn. After cleaning the BAKEWELL NUTTER PLUG can be re-used time and time again.

Silicone Rubber Weld Nut Plug – The Material

Manufactured from silicone rubber, Silicone Rubber Weld Nut Plug or BAKEWELL NUTTER PLUG are ideal for masking during electro-static powder coating, stove enamelling, E-Coat, plating and anodising.

Silicone Rubber

Incredibly versatile material with high temperature resistance and outstanding sealing properties. Available in a massive range of colours, Silicone rubber can be moulded and extruded with precision to supply durable quality products and components.

Technical InformationRead more about Silicone Rubber.
EPDM Rubber

A versatile material with excellent waterproofing, electrical insulation and noise reducing qualities, with good resistance to ketones, ordinary diluted acids, and alkalies.

Technical InformationRead more about EPDM Rubber.
Viton Rubber
Viton is a brand of synthetic rubber and fluoropolymer elastomer commonly used in O-rings, chemical-resistant gloves, and other moulded or extruded goods. The name is a registered trademark of The Chemours Company.

Technical InformationRead more about Viton Rubber.

They will also resist extreme cold without deterioration, in industrial and laboratory applications.

If you have a hole to fill that the sizes listed don’t cover, give us a call. There’s loads of stuff we can supply that isn’t listed. AFAC technicians are on hand to help you solve your plugging and capping issues. Customers can call us during office hours for assistance.

With millions of parts on the shelf, AFAC offers customers a variety of choices to suit most masking applications. As well as the stock lines, AFAC also produces custom made mouldings, extrusions and self adhesive shapes. With customers all over the country and around the World, AFAC can be relied on to deliver quality products at affordable prices for any size of business.

As well as high temperature masking supplies, AFAC also offers wet-spray friendly masking products made using EPDM rubber.

Additional information

Part Number

NTR-04.39-25LL, NTR-05.33-12BK, NTR-05.54-25BK, NTR-05.84-25CL, NTR-07.24-25WH, NTR-08.51-25CL, NTR-08.89-25BN, NTR-10.67-25GY, NTR-11.30-25CL, NTR-12.45-25CL

Fits Metric Thread

M5, M6, M8, M10, M12