To receive the most up-to-date product availability, pricing and delivery options, enter your zip code or log in to your account
Zip Code should not be blankEmail and Password should not be blank
Enter Delivery Zip Code
or
Log In
TELL US MORE
Are you currently located in California?
8 characters minimum
One number
One lowercase letter
One uppercase letter
One special character (!@#$%&*)
Password cannot contain space
Pursuant to CA SB 478, if you are located in California, Airgas cannot display your product pricing until all items have been added to your shopping cart so that we can calculate all applicable fees, including, but not limited to, shipping and handling fees.
The ITW/Miller 4780 (Bernard 4780) is a high-heat resistant rubber composite insulator designed for air-cooled MIG guns. It functions as a safety component to provide electrical insulation between the live brass hex nut and the external torch assembly, preventing nozzle arcing during welding operations.
Features
Prevents nozzle arcing by isolating the live brass hex nut
Provides electrical insulation for the external torch assembly
High-heat resistant material construction
Rubber composite durability for industrial environments