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Two white cylindrical welding back cap insulators

Miller - Weldcraft

Miller - Weldcraft 9-4 Insulator Back Cap PK2 welding

SKU CH-VTH7-0AECV

Pack of two insulator back caps for A-125 and W-250 series welders

  • Product typeWelding Supplies
  • Insulator back cap protects torch head threads
  • Fits A-125 Series and W-250 Series torches
  • Package contains two insulators for spares
  • Genuine Miller Electric welding accessory

Compatible Back Cap Insulator Pair

This pack contains two back-cap insulators manufactured by Miller Electric for the A-125 and W-250 torch series. They are supplied new and ready for immediate workshop use. The insulators provide the electrical separation required at the rear of compatible torches.

For TIG Torch Maintenance on Listed Series

The parts suit technicians who service A-125 or W-250 torches and need a direct replacement insulator set. Buyers working with other torch models or requiring different package quantities should verify compatibility before ordering.

How it compares

Measured against everything we stock in Welding Equipment & Positioners, at today’s prices. Recalculated every night.

Price $6.99
Cheaper than about 94% of the 1,978 comparable items (median $50.99).

Specifications

Product
Brand nameMILLER ELECTRIC
Product typeWelding Supplies

Questions about this item

Does the insulator back cap generate noticeable heat or noise during extended welding sessions?

The back cap is a passive insulator with no moving parts or electrical draw, so it adds no heat or noise to the torch assembly.

Which TIG torch series must I already own for these back caps to fit?

They are designed for A-125 Series and W-250 Series torches.

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