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Choosing a TIG gas lens is mostly about getting the correct torch series, tungsten size, and cup setup. The Mtsooning 45V26 Gas Lens Kit gives you five 3/32-inch gas-lens collet bodies for compatible 17, 18, and 26 series TIG torches. Its main advantage is the five-piece replacement supply, while the main concern is making sure the 45V26 size and 54N-style cup system match your torch. This review explains the verified specifications, setup requirements, limitations, and where this kit makes sense.
Quick Verdict
Rating: 8/10, Recommended with caveats
Best For: TIG welders using compatible 17, 18, or 26 series torches with 3/32-inch tungsten who want several replacement 45V26 gas lenses.
Bottom Line: The five-piece package gives you useful replacement stock and the standard 45V26 configuration supports improved shielding-gas distribution. The tradeoff is that compatibility needs to be checked carefully, and the current product listing is inconsistent about whether the body material should be described as copper or brass.
Key Specifications
| Specification | Detail |
|---|---|
| Brand | Mtsooning |
| Model / Part Number | SZ050070020453RK |
| ASIN | B0787ZMJLZ |
| Product Type | TIG gas lens collet body |
| Gas Lens Reference | 45V26 |
| Tungsten Size | 2.4 mm / 3/32 inch |
| Torch Compatibility | 17, 18, and 26 series TIG torches |
| Cup Compatibility | Designed to work with 54N gas-lens ceramic cups |
| Quantity | 5 gas lens bodies |
| Listed Material | Amazon feature bullets describe copper, while the technical-details table lists brass |
| Listed Item Weight | 6.7 oz |
| Package Dimensions | 3.23 x 2.6 x 0.87 inches |
| Best Use | Replacement or spare gas-lens bodies for compatible TIG setups |
What Is the Mtsooning 45V26 Gas Lens?
The Mtsooning kit contains five 45V26 gas lens collet bodies. Each body is sized for a 2.4 mm, or 3/32-inch, tungsten electrode and is intended for common 17, 18, and 26 series TIG torch configurations.
A gas lens replaces the standard collet-body arrangement in a compatible TIG torch setup. Its job is to help straighten and distribute shielding gas as it exits the torch. Smoother gas flow can improve shielding around the weld area and may allow useful tungsten extension when your cup and welding conditions support it.
This package includes the gas-lens bodies themselves. The listing does not describe it as a complete torch conversion kit with every collet, ceramic cup, heat shield, or other torch component you may need, so check your existing setup before ordering.
Key Takeaways
- You get five 45V26 gas lens bodies, giving you useful replacement stock for repeated TIG work.
- The lens size is intended for 2.4 mm (3/32-inch) tungsten electrodes.
- Mtsooning lists compatibility with 17, 18, and 26 series TIG torches.
- The gas-lens bodies are designed to work with the 54N gas-lens ceramic cup family.
- The manufacturer’s Amazon information is inconsistent about material, describing copper in the feature bullets but brass in the technical-details table.
- Correct torch, collet, tungsten, cup, and heat-shield compatibility matter more than the five-piece package alone.
Before You Buy: Do not choose this kit only because your torch looks similar to a 17, 18, or 26. Confirm your torch series, 3/32-inch tungsten requirement, gas-lens cup system, and required heat shield before ordering. Mtsooning also tells buyers to check torch size before purchase.
Who Should Buy It?
Best For
- You use a compatible 17, 18, or 26 series TIG torch.
- You regularly weld with 3/32-inch tungsten and need 45V26 gas-lens bodies.
- You prefer keeping several replacement gas lenses in your welding consumables kit.
Skip If
- Your torch requires a different gas-lens series or tungsten diameter.
- You need a complete kit containing cups, collets, heat shields, and other torch parts.
- You specifically want a premium branded gas lens with unambiguous published material specifications.
Gas Flow and Welding Visibility
The main reason to use a gas lens is shielding-gas control. Instead of allowing gas to leave the torch in a more turbulent stream, a gas lens helps create a straighter flow around the tungsten and weld zone.
That can be useful when you want dependable shielding around a TIG weld or need slightly more electrode extension for access and visibility. A gas lens does not correct poor gas settings, drafts, contaminated tungsten, leaks, or an incorrect torch setup, but it can improve the way shielding gas reaches the work area.
The 45V26 is a standard gas-lens reference for 3/32-inch electrodes in the 17, 18, and 26 torch family, which makes the Mtsooning kit useful for welders already using that consumable system.
Fit and Compatibility
Compatibility is the most important buying check. Mtsooning specifies 17, 18, and 26 series TIG torches, 3/32-inch tungsten, and compatibility with 54N gas-lens ceramic cups.
The 45V26 designation is not simply a universal TIG accessory number. Other torch families and tungsten sizes use different collet-body references. Even within a compatible torch family, you still need the correct collet, heat shield, and cup arrangement.
Pro Tip: Check the part number stamped on your existing gas lens or consult your torch consumables chart before ordering. Matching the 45V26 reference and 3/32-inch tungsten size is more reliable than choosing by appearance alone.
Build Quality and Materials
The current product listing creates one point of uncertainty. Mtsooning’s Amazon feature description calls the gas lens body copper and describes it as heat resistant and durable. The technical-details table on the same page lists the material as brass.
Because those two descriptions conflict, you should not buy this particular kit based on a requirement for one exact alloy. The practical buying facts that are clearer are the 45V26 reference, five-piece quantity, 3/32-inch size, and stated torch compatibility.
For comparison, other manufacturers commonly make 45V26 gas-lens bodies from brass or brass/copper constructions. The metal body must tolerate repeated heating during normal TIG torch use, while the internal screen or diffuser section needs to remain clean and undamaged for consistent gas flow.
How It Performs in Real Use
Routine Bench and Fabrication Work
For routine TIG work with a compatible 17, 18, or 26 torch, the Mtsooning lens gives you the normal advantage of a gas-lens setup: more controlled shielding-gas distribution around the tungsten. You still need the correct flow rate and a draft-free work area to get the benefit.
Jobs Requiring Better Torch Visibility
A properly installed gas lens can allow more practical tungsten extension than a basic collet-body setup, which may help you see the joint or reach into a restricted area. Do not treat this as permission for unlimited stickout. Your cup size, gas coverage, joint shape, and welding conditions still determine how far you can safely extend the electrode.
Stainless Steel or Aluminum TIG Work
The gas lens itself is not limited to one base metal. You can use a compatible gas-lens setup while TIG welding materials such as stainless steel or aluminum. The lens improves shielding-gas delivery, but successful welding still depends on the correct polarity, filler, tungsten preparation, gas, amperage, and cleaning procedure for the material.
Keeping Replacement Consumables Ready
The five-piece package is especially useful if you weld regularly and prefer having spare gas-lens bodies available. Damage, contamination, worn threads, or diffuser problems can eventually justify replacement, so a multipack reduces the need to order a single replacement each time.
How to Install the Mtsooning Gas Lens
Turn off your welding equipment and shielding-gas supply, and allow the torch to cool before changing consumables. Remove the existing cup and collet-body components according to your torch manufacturer’s instructions.
Install the correct 45V26 gas lens for your 3/32-inch tungsten setup. Make sure the threads engage smoothly and do not force or cross-thread the lens. Install the matching collet, gas-lens heat shield, and compatible 54N-style gas-lens cup required by your torch configuration.
Once assembled, check that the cup sits correctly and that the tungsten is held securely. Restore the shielding gas and verify that the system is not leaking before welding.
Common Setup Mistakes to Avoid
- Buying 45V26 for a tungsten size other than 3/32 inch.
- Assuming every TIG torch uses the same gas-lens thread or cup system.
- Trying to reuse a standard cup that is not intended for the gas-lens setup.
- Cross-threading the gas lens into the torch head.
- Overtightening ceramic components.
- Ignoring a damaged diffuser screen or contaminated gas passages.
Cleaning and Maintenance
There is no verified fixed replacement interval for this Mtsooning gas lens. You do not need to replace it automatically after a particular number of welding hours if it remains clean, undamaged, and performs correctly.
Inspect the gas lens during normal torch maintenance. Look for damaged threads, heavy contamination, a distorted or clogged screen, physical damage, or persistent shielding problems that remain after checking your gas supply and other torch components.
Keep the lens and surrounding consumables free from dirt and metal debris. If the diffuser is badly damaged or cleaning does not restore proper gas flow, replacement is usually more practical than trying to repair the internal screen.
Pros and Cons
Pros
- Five gas-lens bodies in one package provide convenient replacement stock.
- Uses the established 45V26 reference for 3/32-inch tungsten.
- Listed for common 17, 18, and 26 series TIG torches.
- Works with the 54N gas-lens ceramic cup system specified by Mtsooning.
- A gas-lens setup can improve shielding-gas distribution and torch visibility when installed correctly.
Cons
- Compatibility is limited to the specified torch and consumable configuration.
- The Amazon listing conflicts on whether the body material is copper or brass.
- The five gas-lens bodies are not presented as a complete conversion kit with every required cup, collet, and heat shield.
Is It Worth the Price?
The Mtsooning 45V26 kit is best viewed as a value-focused multipack. Instead of buying a single gas-lens body, you receive five pieces for the same torch and tungsten configuration. That can make sense if 3/32-inch tungsten is a regular part of your TIG setup.
You get the most value if you already know that 45V26 is the correct part for your torch. A five-pack is less useful if you are experimenting with a new torch setup or are uncertain about compatibility, because an incorrect part number leaves you with five unusable pieces instead of one.
It is also worth comparing a name-brand 45V26 lens if documented construction and manufacturer-specific torch support matter more to you than multipack value.
How It Compares to Alternatives
CK Worldwide lists its 3GL332 gas lens under the industry reference 45V26 for 3/32-inch electrodes and its 17, 18, and 26 torch ecosystem. Weldmark by CK Worldwide also offers the WEM 45V26, while Weldcraft sells a 45V26 gas lens for the same general 3/32-inch, 17/18/26 application.
The Mtsooning kit makes the most sense when you value a five-piece supply. The branded alternatives are worth comparing if you place more weight on detailed manufacturer documentation or want consumables matched closely to a particular branded torch system.
Frequently Asked Questions
Which TIG torches fit the Mtsooning 45V26 gas lens?
Mtsooning lists the gas-lens bodies for 17, 18, and 26 series TIG torches. Check your exact torch model and consumables chart because similar-looking torch heads may use different parts.
What tungsten size does 45V26 use?
The 45V26 gas-lens body in this kit is intended for a 2.4 mm, or 3/32-inch, tungsten electrode. Choose a different collet-body size if you normally use another tungsten diameter.
Does the kit include ceramic cups and collets?
The verified package description lists five 45V26 gas-lens bodies. Ceramic cups, collets, heat shields, and other torch components are not listed as part of the five-piece contents, so verify what you already have before ordering.
Which cups work with the Mtsooning gas lens?
Mtsooning states that the 45V26 body works with 54N gas-lens ceramic cups. The exact cup size depends on your welding setup, so match the cup to the correct torch and gas-lens system.
How often should you replace a gas lens?
There is no verified fixed hour-based replacement schedule for this product. Replace the lens when you find damaged threads, a deteriorated or clogged diffuser, physical damage, or gas-flow problems that remain after checking the rest of the torch setup.
Can you use this gas lens for aluminum TIG welding?
Yes, a compatible gas-lens setup can be used while TIG welding aluminum. The gas lens controls shielding-gas delivery, while your welder settings, polarity, cleaning, tungsten, filler metal, and gas selection still need to match the aluminum job.
Is the Mtsooning 45V26 made from copper or brass?
The current Amazon listing is inconsistent. Its feature bullets describe the gas lens as copper, while the technical-details table lists brass, so the exact material description should be confirmed with the seller if it matters to your purchase.
What warranty does the Mtsooning gas lens have?
A specific manufacturer warranty duration was not clearly stated in the verified product details. Check the current Amazon warranty and seller information before purchase if warranty coverage is important to you.
The Bottom Line
The Mtsooning 45V26 Gas Lens Kit is worth considering if you use 3/32-inch tungsten with a compatible 17, 18, or 26 series torch and want five replacement gas-lens bodies. Its five-piece format and standard 45V26 configuration are the main strengths, while fit verification and the listing’s copper-versus-brass material inconsistency are the main reasons to buy carefully.
Skip it if you use another torch family, need a different tungsten size, or want a complete conversion kit rather than gas-lens bodies alone.
