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White cylindrical nozzle insulator with threaded base and smooth bore, shown in pair packaging

Tweco

Tweco 13401126 Nozzle Insulator for Guns 3 and 4 welding

SKU CH-R3KB-TSHB4

Nozzle insulator compatible with Tweco Guns 3 and 4, WS24CT, Spray Master 350 and 450, pack of two

  • TypeWelding Parts & Supplies
  • Protects nozzle threads with durable insulator material
  • Fits Tweco Spray Master 350 and 450 guns precisely
  • Compatible with WS24CT series welding equipment
  • Supplied as a two-piece pack for convenience
  • Genuine Tweco component ensures reliable welding performance

Tweco 13401126 Nozzle Insulator for Guns 3 and 4

The Tweco 13401126 is a nozzle insulator supplied in a pack of two. It is a welding part manufactured by Tweco for use with compatible MIG guns. This component fits Guns No 3 and 4 and helps maintain the correct nozzle position during welding operations.

Suits Tweco Spray Master 350 and 450 owners

Welders running Tweco Spray Master 350 or 450 guns, or the WS24CT series, can use these insulators as direct replacements. Buyers who need insulators for other gun models, different brands, or single-unit packs should look at something else. The part is also restricted from sale in certain states, so eligibility must be confirmed before ordering.

Pack of two insulators for Guns No 3 and 4

The decisive specification is the pack quantity of two insulators designed specifically for Guns No 3 and 4. Compatibility is confirmed for the WS24CT series and Spray Master 350 and 450 models. Verifying the gun number and series ensures the correct fit for the welding setup.

Highlights

  • Protects nozzle threads with durable insulator material
  • Fits Tweco Spray Master 350 and 450 guns precisely
  • Compatible with WS24CT series welding equipment
  • Supplied as a two-piece pack for convenience
  • Genuine Tweco component ensures reliable welding performance

Specifications

TypeWelding Parts & Supplies
BrandTWECO

Questions about this item

Does the 13401126 nozzle insulator fit the Spray Master 350 and 450 guns?

Yes, this insulator is compatible with the Tweco Spray Master 350 and Spray Master 450 gun series.

How do I install the nozzle insulator onto the gun correctly?

Thread the insulator onto the gun's diffuser or retaining head until it seats firmly against the nozzle; the step often missed is confirming the insulator sits flush so gas flow isn't disrupted.

When should I replace the nozzle insulator on my welding gun?

Replace the insulator when it shows cracks, melting, or heavy spatter buildup that prevents the nozzle from seating securely.

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