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NDT Inspection Plugs

Permanent inspection ports for corrosion-under-insulation monitoring - open them, test the wall, seal them again, without cutting the insulation open every time.

Product Details

Corrosion under insulation is found by looking, and looking normally means cutting the cladding open and making good afterwards. Inspection plugs turn that into a repeatable operation: a permanent sealed port at the place you need to check, opened by hand and resealed leak-tight.

Materials

  • Stainless steel
  • Aluminium
  • High-temperature silicone

Why engineers specify them

  • Leak-tight, repeatable sealing against moisture ingress
  • High temperature and pressure resistance through thermal cycling
  • Tool-free installation - no special equipment
  • Reusable across multiple inspection cycles
  • Long operational life in severe environments

Where they are used

  • Corrosion under insulation (CUI) monitoring
  • NDT and visual inspection ports
  • Pressure vessels and boilers
  • Chemical storage tanks
  • Heat exchangers and piping systems
  • Weld testing in process plants and refineries

Sizes

Standard sizes from stock; custom sizes made to order.

Need NDT Inspection Plugs priced?

Send the specification or the bill of quantities - pricing and lead times come back within one business day, datasheets on request.

Good to Know

Questions about NDT Inspection Plugs

They let you check for corrosion under insulation without cutting the cladding open and making good each time. The port stays in place and reseals leak-tight.

Stainless steel, aluminium or high-temperature silicone, depending on the service.

No - installation and access are tool-free, and the plugs are reusable across multiple inspection cycles.

Yes. Standard sizes are held, and custom sizes are made to order.
Talk to an Engineer

Not sure this is the right material?

Tell us the operating temperature, the service and the space you have. Our engineers will tell you what fits - even when the answer is a different product.

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