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 Radnor 64005643 (Industry Part Number 57Y02) is a long-style TIG back cap designed for Gas Tungsten Arc Welding (GTAW) torches. It functions as a mechanical seal and electrode securing mechanism, specifically engineered for the 3-Series (Large) TIG torch family to provide a gas-tight seal and electrical insulation during high-amperage operations.
Features
Full-Length Tungsten Accommodation: Allows for the use of full 7-inch (175mm) tungsten electrodes to minimize waste
Electrode Tensioning: Compresses the collet against the collet body to create a friction lock preventing electrode slippage
Atmospheric Seal: Integrated O-ring creates a gas-tight seal to direct shielding gas (Argon/Helium) to the weld pool
Electrical Insulation: Plastic body provides a dielectric barrier between the energized electrode and the operator
Heat Resistance: Material composition designed to withstand radiant heat and high-amperage operations
Threaded Design: Allows for secure installation and removal to minimize downtime
Specifications
Manufacturer: RADNOR™ (Airgas Exclusive Brand)
Manufacturer Part Number (MPN): 57Y02
Airgas Part Number: RAD64005643
UPC Code: 639890056431
Style/Length: Long
Physical Length: 4.75 inches (120.65 mm)
Thread Specification: 3/8-24 UNF
Weight: 0.06 lbs - 0.09 lbs
Body Material: High-temperature impact-resistant phenolic plastic/polymer
Internal Threading: Brass or copper alloy insert
Sealing Component: High-grade rubber O-ring (Industry standard 98W18)
