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108778 - Miller 108778 P12 O-Ring Replacement Seal (Pack of 3)

Packaging: 3 PER EA
$21.94/EA $46.68/3 PER EA only $15.56/EASave 29%

Usually ships within 3-5 business days

OVERVIEW

Reliable Sealing with Genuine Miller Parts

The Miller 108778 O-Ring (P12) is a critical replacement component designed to maintain the integrity of your Miller welding equipment. Sold in a convenient pack of 3, these O-rings are engineered to meet the strict specifications of Miller Electric, ensuring a perfect seal every time. In the demanding environment of industrial welding, even the smallest component plays a vital role. A compromised O-ring can lead to gas leaks, which disrupt shielding coverage and cause weld defects, or coolant leaks that threaten to overheat expensive torch components. By choosing genuine OEM parts, you ensure that your equipment continues to operate at peak performance levels.

This specific O-ring conforms to the P12 size standard, a common specification for sealing connections in pneumatic and hydraulic systems within welding power sources and wire feeders. The material composition is selected to withstand the specific pressures and temperatures found in welding environments, offering superior resistance to degradation compared to generic hardware store alternatives. Whether you are troubleshooting a loss of gas flow or performing routine preventative maintenance, replacing worn seals with the Miller 108778 ensures your machine remains reliable and safe to operate.

Maintenance professionals understand that having the right spare parts on hand is essential for minimizing downtime. This 3-pack allows you to replace a faulty seal immediately while keeping spares in your inventory for future needs. Installation is straightforward, but it is always recommended to verify fitment with your specific machine's manual or parts diagram. Trust in the quality and precision of Miller OEM parts to protect your investment and maintain the high standards of your welding operations.

Additional Information
Brand:Miller
Item:O-Ring
Packaging Description:3 Per Ea
Part Type:Replacement Seal
Size Standard:P12
Compatibility:Miller Welding Equipment

INCLUDED

  • 3 x Miller 108778 O-Rings (P12)

APPLICATIONS

  • Sealing shielding gas connections in welding machines.
  • Repairing coolant lines in water-cooled TIG and MIG systems.
  • General maintenance of Miller power sources and wire feeders.
  • Replacement of worn or dried-out seals during equipment overhaul.

FAQ

This O-ring is a P12 size, which typically corresponds to an inner diameter of approximately 11.8mm and a cross-section thickness of 2.4mm.

The Miller 108778 comes as a package of 3 O-rings.

Yes, this is a genuine OEM Miller Electric replacement part, ensuring correct fitment and material quality.

Generic O-rings may not have the exact dimensional tolerance or material resistance required, leading to potential leaks of gas or coolant.

You should check your specific machine's parts manual or breakdown diagram for the part number 108778 to verify fitment.

While the exact compound is proprietary to the application, it is a high-grade elastomer designed for industrial sealing environments.

It depends on the specific location in the machine; however, O-rings of this type are generally used for sealing both gas and liquid lines where specified.