Understanding the basics of a Mig welder liner is crucial, whether you’re a pro or a novice. That’s what I’ll walk you through right here in this article. This essential component plays a key role in improving your welding performance.

So, without more chit-chat, let’s get into the details of it along with my some best selections on the MIG welder liner.

Why is Mig Welder Liner Important?

Mig Welder Liners
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Hands down, the MIG welder liner is an essential as well as a basic part of the MIG gun. It plays a significant role in guiding the wire of welding from the feeder via gun cable.

So if your MIG welder liner performs inappropriately, then the gun will eventually turn valueless!

That’s why it is considered a vital part of every welder.

What Type of Liner for Best Performance?

In general, there are several types of liners available around the stores. That said, when it comes to the best performance, these are my 3 go-to ever!

Check them out:

1. Steel Liners for MIG Gun

Here comes the traditional MIG gun liner from steel that has a variety of usage these days. Steel liners tend to be more rigid, cost-effective, and flexible. Seasoned welders rely on it quite often as they suit mild steel most, including ER70S-6, ER70S-3, and so on!

Generally, a steel liner is abrasive on silicon bronze, aluminum, and such soft wires. Either go for a normal steel liner or the insulated one, depending on your needs and requirements.

2. Plastic Liners for MIG Gun

Apart from the cost-effective “steel liners,” there are also a couple of plastic liners available for your Mig gun. Although every type of plastic liner looks almost alike, they must still be ideal for different projects.

Let’s get familiar with them right away:

  • PTFE (Teflon): For those needing a Mig gun liner to perform high heat projects, try out the Teflon plastic liner. With decent resistance against abrasion, it comes at a high melting temperature. Instead of an air-cooling gun, PTFE is friendly with water-cooling torches.
  • PA (Polyamide): Filled with carbon nylon, many expert welders love to use it in relatively low-temp projects. If you’re someone who needs to have a plastic liner for tiny gauge aluminum, silicon bronze, or aluminum wires, simply go for the polyamide.
  • CTFE (Carbon Teflon): Let it be flux-cored wire, ER309, or ER308; Carbon Teflon suits pretty well to get your job done. Moreover, it works just fine with ER5356 and such kinds of aluminum as well. Unlike the typical plastic liners you use, CTFE has more ability to resist temperature.
  • PTFE High-Density (Teflon): Last but certainly not least, this one is so popular among pro welders for its extended service life. From stiff to abrasive to softer wires, this liner works really pretty well on every kind of component.

3. Jump Liners for MIG Gun (Neck Liners)

Do you want to enhance your wire liner’s lifespan? If so, then neck liners are what you might be searching for! They are basically tiny liners with a short collet, which stands in the welding torch.

Using such a liner is convenient, time-saving, as well as cost-saving as they don’t use excessive material. And needless to say, it is more ecological than the typical ones.

Whether it is a manual or robotic welding project, jump liners can do it all!

Best MIG Welder Liner (Ultimate Review)

Here are my top pics on the MIG welder liner, including their reviews, pros, and cons.

#1 Lincoln Mig Gun Liner Kp1937-3

From K530-1 to K530-6 models, the Lincoln Mig Gun Liner is compatible with all to fill your needs. Coming in a size of around 15ft, it is going to match different types of MIG guns with different sizes, including 12, 10, and 15 ft. guns.

No matter which diameter you want to use, this super-effective liner will feed the majority, such as .023”, .025”, .024”, .035”, and .030”. And guess what? Lincoln Mig Gun Liner is capable of feeding both flux-cored and solid wires.

So, it’s good to have such a welder liner to take your welding experience to a new height!

Good Sides

  • The 15ft liner matches several-sized guns
  • Able to feed different diameter wire sizes
  • Compatible with flux-cored and solid wires


  • Not the best choice for aluminum wires!

#2. Welding City Steel Liner 35-40-15

So, do you prefer a MIG liner for stainless steel wire?

If so, then I’d strongly suggest giving the Welding City Steel Liner a try!

This US-based product comes in top-notch quality and features “Tweco style” to make it unique and stand out.

Like my previous choice, this one also comes in 15ft long to match numerous diameter wires, from 10 ft. to 15 ft. MIG guns. Alongside that, Welding City Liner matches hard alloy and stainless steel wires, making it a versatile welder liner around the current shops.

Lastly, I’ve found this one less expensive than the previous model.

Good Sides

  • Top-quality tweco style
  • Accommodates both hard alloy and steel wires
  • 15ft and suitable for different diameter wires


  • Tightening it is a bit challenging at times

#3. Miller Genuine Liner

On list number 3, I’ve got the Miller Genuine Liner designed for the millermatic series. Coming in 15 ft. long, you’re allowed to use it on a couple of different mig guns like 15, 12, or even 10 ft.

Thanks to its efficient size, the liner can feed various diameter sizes, from .030” to .035”. Although it suits almost every millermatic feed gun, still you shouldn’t pick this up for miller cricket.

What’s more?

Let’s talk about its installation. Trust me; you’ll find it way easier than your typical welder liner. And the price seems to be affordable too, making it both beginner-friendly as well as budget-friendly!

Good Sides

  • Matches different MIG guns
  • Friendly with .030” to .035” wire diameters
  • Affordable and relatively easy to install


  • Doesn’t match millet cricket

Mig Liner Problems and How to Solve?

You may notice 2 significant problems in your Mig liner from time to time. And to help you get rid of them, let me show you some of their causes and how to solve them:

1. Problem-1: Erratic Wire Feeding

Such a problem occurs if the liner turns worn out in some specific spots. Moreover, too much dust build-up and improper wire trimming during replacement may also be the common reason behind it.


  • You’ll need to change/replace the completely worn-out liner.
  • Ensure to trim the liner in an accurate way. That mustn’t be too short or too long.

2. Problem-2: Loose Cable Connection

Note that extreme heat build-up and discolored liner are the two common symptoms of electrical short. It happens because of too much loss of electricity at the arc.


  • If the cable gets too discolored due to extreme heat build-up, you’ll need to replace it with a new one.

How to Change Liner and Install New One

Changing liner isn’t rocket science. Still, you need to follow some specific steps to do that, and these are given below:

  • Unscrewing the nut on the liner is what you will do at first using a spanner. And this will be available with the welding torch you purchased.
  • Pull out the liner right away from your Mig gun. While doing this, there is no need to provide excess pressure out there.
  • Let’s feed the cleaned/newer liner to your MIG gun. Make sure the gun is in a straight direction.
  • Push that liner slowly and as gently as possible. DON’T RUSH at all! Now, make a connection between the liner and holding nut and Voila! It’s done.

Final Words

The comprehensive guide on MIG welder liner shows you almost all the nooks and crannies you’re searching for to get the most out of it. Plus, I’ve shared my ultimate choices on welder liners.

And depending on your needs and budget, any of them can be your go-to for upcoming projects.

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Maidul Islam

Maidul Shakil has an extreme love for welding. Welding metals and joining them is his hobby and he has also got a vocational training on welding. He strives to learn and teach welding processes and different gears to beginners and newbies. Cutting metal, fusing them and polishing to a shiny surface seems interesting.

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