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RADNOR™ Back cap
By
Airgas Part #:RAD64005646
Manufacturer Part #:57Y04
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$3.80
Each
$3.80
/Each
Item Details
- Radnor 64005646 (Ref No: 57Y04) is a short back cap designed for 17, 18, and 26 series TIG/GTAW torches. It provides mechanical pressure to the collet to secure the tungsten electrode and creates a hermetic seal at the rear of the torch head to prevent shielding gas leakage.
Features
- Short profile for maneuvering in confined spaces
- Phenolic body construction
- Brass threading for electrode locking
- Pre-installed O-ring for airtight sealing
- Electrical insulation to prevent arc wandering or shorting
- Mechanical pressure application to collet for tungsten retention
Specifications
- Manufacturer Part Number: 64005646
- Reference Number: 57Y04
- Torch Series Compatibility: 17, 18, 26
- Thread Size: 3/8"-32 UNEF
- Body Material: Heat-resistant phenolic
- Thread Material: Brass
- O-Ring Part Number: 98W18
- Compatible Torch Models: WP-17, WP-18, WP-26, HW-17, HW-18, HW-26, PTA-17, PTA-18, PTA-26, DB17, DB18, DB26
- Amperage Compatibility: 150 Amps (17 series), 200 Amps (26 series), 350 Amps (18 series)
- Cooling Compatibility: Air-cooled (17, 26), Water-cooled (18)
- Tungsten Length Requirement: Under 2 inches
Applications
- Automotive Fabrication (roll cages, exhaust headers, intake manifolds)
- Pipe Welding (root passes in pipe racks or boiler tubes)
- Aerospace & Repair (confined compartments and complex assemblies)
- General Maintenance (on-site repairs with limited access)
Product Attributes
Accessory Type
» Back capTorch Amperage
» 150 A» 160 A
» 175 A
» 180 A
» 200 A
» 220 A
» 230 A
» 250 A
» 300 A
» 310 A
» 320 A
» 350 A
Torch Model
» HW-17» HW-18
» HW-26
» WP-17
» WP-18
» WP-26
