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4478 - Bernard 4478 Replacement O-Ring for 400A MIG Guns

Packaging: 10 per pack
$1.57/ea $12.60/10 per pack only $1.26/eaSave 20%

Usually ships within 3-5 business days

OVERVIEW

Genuine Bernard 4478 O-Ring Replacement

Maintain the integrity of your welding equipment with the Bernard 4478 O-Ring. This genuine replacement part is engineered specifically for Bernard MIG guns, ensuring a perfect fit and reliable performance. Designed to withstand the rigors of industrial welding environments, this O-ring is crucial for preventing gas leaks and maintaining optimal pressure within your welding torch assembly.

The 4478 O-Ring is rated for use with 400 Amp MIG gun configurations, making it a vital component for heavy-duty welding operations. Regular inspection and replacement of O-rings are essential preventive maintenance steps that help avoid downtime and ensure consistent weld quality. Whether you are repairing a damaged seal or performing routine maintenance, this authentic Bernard component restores your equipment to factory specifications.

As an OEM part, it guarantees compatibility with specific Bernard gun models, eliminating the guesswork associated with generic replacements. Trust in the durability and precision of Bernard consumables to keep your production line moving efficiently. Proper sealing is critical for shielding gas efficiency, and this part ensures your system operates as intended.

Additional Information
Brand:Bernard
Item:O-Ring
Amperage:400 A
Material:Rubber/Elastomer
Part Type:Replacement Seal
Compatibility:Bernard MIG Guns
Packaging Description:10 per pack

INCLUDED

  • 1 x Bernard 4478 O-Ring

APPLICATIONS

  • Sealing connections in Bernard MIG guns
  • Preventing shielding gas leaks
  • Maintenance of 400 Amp welding torches
  • Replacement of worn or dried-out seals

FAQ

It provides a gas-tight seal within the MIG gun assembly to prevent shielding gas leaks and ensure proper flow to the weld pool.

This O-ring is specified for use with 400 Amp Bernard MIG gun models.

Yes, this is a genuine OEM Bernard 4478 O-Ring.

If you notice gas leaks, visible cracking, flattening of the ring, or if the connection feels loose, it is time to replace the O-ring.

It is usually found on the gun neck assembly or the power pin connection where the gun connects to the feeder.

It is recommended to use OEM parts like the 4478 to ensure the correct material heat resistance and precise sizing for a proper seal.

No, it is specific to certain models, particularly those rated for 400 Amps. Check your gun's manual for part compatibility.

It is made of a durable elastomer/rubber compound designed to withstand the heat and environment of welding.