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20642059 - Tweco 224-S O-Ring for #4 Power Pin (10 Pack)

Packaging: 10 in a pack
$0.76/ea $6.50/10 in a pack only $0.65/eaSave 14%

In stock

OVERVIEW

Stop Leaks and Fix Porosity with Tweco 224-S O-Rings

Is your MIG gun sputtering? Are you noticing porosity in your welds despite having a full tank of gas? The culprit might be hiding right where your gun plugs into the machine. The Tweco 224-S O-Ring fits the popular Tweco #4 Power Pin and is the first line of defense against shielding gas leaks. When this small rubber ring wears out, gas escapes before it ever travels down the liner, leaving your weld pool unprotected and your wallet empty from wasted gas refills.

Every welder knows that consumables wear out, but we often forget about the O-rings on the back end of the gun. If you are swapping guns between machines frequently, or if your equipment has been sitting for a while, that O-ring can get chewed up, flattened, or dried out. Replacing it is one of the cheapest and easiest fixes you can do to improve your arc stability and weld appearance. Don't let a fifty-cent part ruin a critical project.

We sell these in a pack of 10 because we know how easy they are to lose or damage during maintenance. Toss a bag in your toolbox or hang it on the wire feeder, and you'll be ready the next time you hear that tell-tale hissing sound at the drive rolls. These are genuine-style replacements designed to fit perfectly on the Tweco #4 pin, so you don't have to fight to get the gun seated. Keep your gas coverage consistent and your beads looking slick with fresh seals.

Why You Need This Kit

  • Instant Fix: Solves common gas leak issues at the feeder connection immediately.
  • Perfect Fit: No guessing—sized exactly for the standard Tweco #4 pin.
  • Shop Essential: A must-have spare part for any welder running Tweco gear.
Additional Information
Brand:Tweco
Item:O-Ring
Packaging Description:10-in-a-pack
Fits Which Model:N/A
Compatible Brand/Model:Tweco #4 Power Pin
Part Number:2064-2059, 224-S
Product Type:Replacement O-Ring

INCLUDED

  • 10 x 224-S O-Rings (Fits Tweco #4 Power Pin)

APPLICATIONS

  • Sealing Tweco #4 Power Pins to wire feeders
  • Preventing shielding gas leaks in MIG welding setups
  • Routine maintenance of MIG gun back-end connections
  • Refurbishing older Tweco MIG guns

FAQ

This O-ring (224-S) is designed to fit the groove on a standard Tweco #4 Power Pin, which is the connector found on the back end of many Tweco MIG guns.

This product is sold as a bag of 10 O-rings.

Common signs include audible hissing at the feeder connection, higher than normal gas usage, or porosity in your welds due to insufficient gas coverage.

This item corresponds to Tweco part number 2064-2059 (224-S). It is designed to meet or exceed OEM specifications for fit and seal.

Yes, applying a very small amount of O-ring lubricant or even a touch of nozzle gel can help the O-ring slide into the feeder port without tearing or bunching up.

It is specifically sized for the Tweco #4 style. While some other brands may copy this style (Tweco-style), you should verify the pin type is a #4 before purchasing.

It is made from a durable industrial elastomer (rubber) designed to resist the compression and environmental conditions of welding workshops.

Absolutely. If air is sucked in or gas leaks out at the power pin, your shielding gas coverage at the nozzle will be compromised, leading to porosity.