CK Flex-Loc TIG Torch Parts, Heads & Adapters

CK Flex-Loc TIG Torch

Flex-Loc is a modular torch system. Confirm head family and adapter setup before selecting cups, collets, or gas lenses.

Compatible Machines

Dynasty 210Modular TIG upgrade path where adapter is verified. Dynasty 300Modular TIG upgrade path for higher-output packages. Maxstar 210Portable TIG path; verify connector setup. Maxstar 280CPS and TIGRunner paths; verify connector setup. Syncrowave SeriesVerify cable, cooler, and adapter requirements.

Most Common Replacement Parts

Flex-Loc heads
Adapters
O-rings
Cups
Collets

Common Consumables

Series 2 ConsumablesUsed by select Flex-Loc heads. Series 3 ConsumablesUsed by larger Flex-Loc head paths. AdaptersVerify head and machine connector.

Back CapsCap fit depends on head family.

Breakdown Diagram

Jump to Flex-Loc Diagram and Parts Table

Need More Help?

If a Flex-Loc part does not fit, verify head number, consumable series, adapter, and connector before ordering.

Series 2 Flex-Loc path

FL2L / FL130 / FL230 route to CK Series 2 consumables.

Open Series 2

Series 3 Flex-Loc path

FL3L / FL150 / FL250 route to CK Series 3 consumables.

Open Series 3

Fitment risk

Do not order by Flex-Loc name alone. Confirm head series, cooling type, and connector path.

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Item #	Part #	Description	Buy
Cup	`2S4`	CK 2 Series TIG cup - #4 standard cup, 1/4 in. cup Use only on CK 2 Series front-end systems.	Buy link unavailable.
Cup	`2S5`	CK 2 Series TIG cup - #5 standard cup, 5/16 in. cup Use only on CK 2 Series front-end systems.	Buy link unavailable.
Cup	`2S6`	CK 2 Series TIG cup - #6 standard cup, 3/8 in. cup Use only on CK 2 Series front-end systems.	Buy link unavailable.
Cup	`2S7`	CK 2 Series TIG cup - #7 standard cup, 7/16 in. cup Use only on CK 2 Series front-end systems.	Buy link unavailable.
Cup	`2S8`	CK 2 Series TIG cup - #8 standard cup, 1/2 in. cup Use only on CK 2 Series front-end systems.	View on Amazon
Cup	`2S10`	CK 2 Series TIG cup - #10 standard cup, 5/8 in. cup Use only on CK 2 Series front-end systems.	View on Amazon
Cup	`2SG4`	CK 2 Series TIG cup - #4 gas lens cup cup Use only on CK 2 Series front-end systems.	Buy link unavailable.
Cup	`2SG5`	CK 2 Series TIG cup - #5 gas lens cup cup Use only on CK 2 Series front-end systems.	View on Amazon
Cup	`2SG6`	CK 2 Series TIG cup - #6 gas lens cup cup Use only on CK 2 Series front-end systems.	View on Amazon
Cup	`2SG7`	CK 2 Series TIG cup - #7 gas lens cup cup Use only on CK 2 Series front-end systems.	View on Amazon
Cup	`2SG8`	CK 2 Series TIG cup - #8 gas lens cup cup Use only on CK 2 Series front-end systems.	View on Amazon
Cup	`3SG6LD`	CK 2 Series TIG cup - #6 large-diameter gas lens cup cup Use only on CK 2 Series front-end systems.	View on Amazon
Cup	`3SG8LD`	CK 2 Series TIG cup - #8 large-diameter gas lens cup cup Use only on CK 2 Series front-end systems.	View on Amazon
Cup	`3SG10LD`	CK 2 Series TIG cup - #10 large-diameter gas lens cup cup Use only on CK 2 Series front-end systems.	View on Amazon
Cup	`3SG12LD`	CK 2 Series TIG cup - #12 large-diameter gas lens cup cup Use only on CK 2 Series front-end systems.	Buy link unavailable.
Collet body	`2CB020`	CK 2 Series collet body - .020 in. standard collet body collet body Match standard vs gas-lens setup before ordering.	Buy link unavailable.
Collet body	`2CB040`	CK 2 Series collet body - .040 in. standard collet body collet body Match standard vs gas-lens setup before ordering.	Buy link unavailable.
Collet body	`2CB116`	CK 2 Series collet body - 1/16 in. standard collet body collet body Match standard vs gas-lens setup before ordering.	View on Amazon
Collet body	`2CB332`	CK 2 Series collet body - 3/32 in. standard collet body collet body Match standard vs gas-lens setup before ordering.	View on Amazon
Collet body	`2CB418`	CK 2 Series collet body - 1/8 in. standard collet body collet body Match standard vs gas-lens setup before ordering.	View on Amazon
Collet body	`2GL20`	CK 2 Series collet body - .020 in. gas lens collet body collet body Match standard vs gas-lens setup before ordering.	View on Amazon
Collet body	`2GL40`	CK 2 Series collet body - .040 in. gas lens collet body collet body Match standard vs gas-lens setup before ordering.	View on Amazon
Collet body	`2GL116`	CK 2 Series collet body - 1/16 in. gas lens collet body collet body Match standard vs gas-lens setup before ordering.	View on Amazon
Collet body	`2GL332`	CK 2 Series collet body - 3/32 in. gas lens collet body collet body Match standard vs gas-lens setup before ordering.	View on Amazon
Collet body	`2GL418`	CK 2 Series collet body - 1/8 in. gas lens collet body collet body Match standard vs gas-lens setup before ordering.	View on Amazon
Collet body	`2GL0204LD`	CK 2 Series collet body - .020/.040 large-diameter gas lens body collet body Match standard vs gas-lens setup before ordering.	View on Amazon
Collet body	`2GL116LD`	CK 2 Series collet body - 1/16 in. large-diameter gas lens body collet body Match standard vs gas-lens setup before ordering.	View on Amazon
Collet body	`2GL332LD`	CK 2 Series collet body - 3/32 in. large-diameter gas lens body collet body Match standard vs gas-lens setup before ordering.	View on Amazon
Collet body	`2GL418LD`	CK 2 Series collet body - 1/8 in. large-diameter gas lens body collet body Match standard vs gas-lens setup before ordering.	View on Amazon
Collet	`2C020`	CK 2 Series collet - .020 in. standard collet collet Match tungsten diameter exactly.	View on Amazon
Collet	`2C040`	CK 2 Series collet - .040 in. standard collet collet Match tungsten diameter exactly.	View on Amazon
Collet	`2C116`	CK 2 Series collet - 1/16 in. standard collet collet Match tungsten diameter exactly.	View on Amazon
Collet	`2C332`	CK 2 Series collet - 3/32 in. standard collet collet Match tungsten diameter exactly.	View on Amazon
Collet	`2C418`	CK 2 Series collet - 1/8 in. standard collet collet Match tungsten diameter exactly.	View on Amazon
Collet	`2C040GS`	CK 2 Series collet - .040 in. wedge collet collet Match tungsten diameter exactly.	View on Amazon
Collet	`2C116GS`	CK 2 Series collet - 1/16 in. wedge collet collet Match tungsten diameter exactly.	View on Amazon
Collet	`2C332GS`	CK 2 Series collet - 3/32 in. wedge collet collet Match tungsten diameter exactly.	View on Amazon
Collet	`2C418GS`	CK 2 Series collet - 1/8 in. wedge collet collet Match tungsten diameter exactly.	View on Amazon
Collet	`6C020`	CK 2 Series collet - .020 in. reverse collet collet Match tungsten diameter exactly.	Buy link unavailable.
Collet	`6C040`	CK 2 Series collet - .040 in. reverse collet collet Match tungsten diameter exactly.	Buy link unavailable.
Collet	`6C116`	CK 2 Series collet - 1/16 in. reverse collet collet Match tungsten diameter exactly.	View on Amazon
Collet	`6C332`	CK 2 Series collet - 3/32 in. reverse collet collet Match tungsten diameter exactly.	View on Amazon
Collet	`6C418`	CK 2 Series collet - 1/8 in. reverse collet collet Match tungsten diameter exactly.	Buy link unavailable.
Heat shield	`2GHS`	CK 2 Series standard heat shield heat shield Used with standard CK 2 Series front-end setup.	Buy link unavailable.
Heat shield	`2GHSLD`	CK 2 Series large-diameter heat shield heat shield Used with large-diameter gas lens setup.	View on Amazon
Back cap	`200L`	CK 2 Series long back cap, equivalent 41V24 back cap Confirm torch clearance and back-cap length.	View on Amazon
Back cap	`200M`	CK 2 Series medium back cap, equivalent 41V35 back cap Confirm torch clearance and back-cap length.	Buy link unavailable.
Back cap	`200S`	CK 2 Series short back cap, equivalent 41V33 back cap Confirm torch clearance and back-cap length.	View on Amazon
Cup	`3S4`	CK 3 Series TIG cup - #4 standard cup, 1/4 in. cup Use only on CK 3 Series front-end systems.	View on Amazon
Cup	`3S5`	CK 3 Series TIG cup - #5 standard cup, 5/16 in. cup Use only on CK 3 Series front-end systems.	Buy link unavailable.
Cup	`3S6`	CK 3 Series TIG cup - #6 standard cup, 3/8 in. cup Use only on CK 3 Series front-end systems.	Buy link unavailable.
Cup	`3S7`	CK 3 Series TIG cup - #7 standard cup, 7/16 in. cup Use only on CK 3 Series front-end systems.	Buy link unavailable.
Cup	`3S8`	CK 3 Series TIG cup - #8 standard cup, 1/2 in. cup Use only on CK 3 Series front-end systems.	Buy link unavailable.
Cup	`3S10`	CK 3 Series TIG cup - #10 standard cup, 5/8 in. cup Use only on CK 3 Series front-end systems.	Buy link unavailable.
Cup	`3S12`	CK 3 Series TIG cup - #12 standard cup, 3/4 in. cup Use only on CK 3 Series front-end systems.	Buy link unavailable.
Cup	`3SG4`	CK 3 Series TIG cup - #4 gas lens cup cup Use only on CK 3 Series front-end systems.	View on Amazon
Cup	`3SG5`	CK 3 Series TIG cup - #5 gas lens cup cup Use only on CK 3 Series front-end systems.	View on Amazon
Cup	`3SG6`	CK 3 Series TIG cup - #6 gas lens cup cup Use only on CK 3 Series front-end systems.	View on Amazon
Cup	`3SG7`	CK 3 Series TIG cup - #7 gas lens cup cup Use only on CK 3 Series front-end systems.	Buy link unavailable.
Cup	`3SG8`	CK 3 Series TIG cup - #8 gas lens cup cup Use only on CK 3 Series front-end systems.	View on Amazon
Cup	`3SG6LD`	CK 3 Series TIG cup - #6 large-diameter gas lens cup cup Use only on CK 3 Series front-end systems.	View on Amazon
Cup	`3SG8LD`	CK 3 Series TIG cup - #8 large-diameter gas lens cup cup Use only on CK 3 Series front-end systems.	View on Amazon
Cup	`3SG10LD`	CK 3 Series TIG cup - #10 large-diameter gas lens cup cup Use only on CK 3 Series front-end systems.	View on Amazon
Cup	`3SG12LD`	CK 3 Series TIG cup - #12 large-diameter gas lens cup cup Use only on CK 3 Series front-end systems.	Buy link unavailable.
Cup	`2SG4`	CK 3 Series TIG cup - #4 short gas lens cup cup Use only on CK 3 Series front-end systems.	Buy link unavailable.
Cup	`2SG7`	CK 3 Series TIG cup - #7 short gas lens cup cup Use only on CK 3 Series front-end systems.	View on Amazon
Collet body	`3CB20`	CK 3 Series collet body - .020 in. standard collet body collet body Match standard, gas lens, large diameter, or short gas lens setup.	View on Amazon
Collet body	`3CB40`	CK 3 Series collet body - .040 in. standard collet body collet body Match standard, gas lens, large diameter, or short gas lens setup.	View on Amazon
Collet body	`3CB116`	CK 3 Series collet body - 1/16 in. standard collet body collet body Match standard, gas lens, large diameter, or short gas lens setup.	View on Amazon
Collet body	`3CB332`	CK 3 Series collet body - 3/32 in. standard collet body collet body Match standard, gas lens, large diameter, or short gas lens setup.	View on Amazon
Collet body	`3CB418`	CK 3 Series collet body - 1/8 in. standard collet body collet body Match standard, gas lens, large diameter, or short gas lens setup.	View on Amazon
Collet body	`3CB532`	CK 3 Series collet body - 5/32 in. standard collet body collet body Match standard, gas lens, large diameter, or short gas lens setup.	View on Amazon
Collet body	`3GL20`	CK 3 Series collet body - .020 in. gas lens collet body collet body Match standard, gas lens, large diameter, or short gas lens setup.	View on Amazon
Collet body	`3GL40`	CK 3 Series collet body - .040 in. gas lens collet body collet body Match standard, gas lens, large diameter, or short gas lens setup.	View on Amazon
Collet body	`3GL116`	CK 3 Series collet body - 1/16 in. gas lens collet body collet body Match standard, gas lens, large diameter, or short gas lens setup.	View on Amazon
Collet body	`3GL332`	CK 3 Series collet body - 3/32 in. gas lens collet body collet body Match standard, gas lens, large diameter, or short gas lens setup.	View on Amazon
Collet body	`3GL418`	CK 3 Series collet body - 1/8 in. gas lens collet body collet body Match standard, gas lens, large diameter, or short gas lens setup.	View on Amazon
Collet body	`3GL532`	CK 3 Series collet body - 5/32 in. gas lens collet body collet body Match standard, gas lens, large diameter, or short gas lens setup.	View on Amazon
Collet body	`3GL116LD`	CK 3 Series collet body - 1/16 in. large-diameter gas lens body collet body Match standard, gas lens, large diameter, or short gas lens setup.	View on Amazon
Collet body	`3GL332LD`	CK 3 Series collet body - 3/32 in. large-diameter gas lens body collet body Match standard, gas lens, large diameter, or short gas lens setup.	View on Amazon
Collet body	`3GL418LD`	CK 3 Series collet body - 1/8 in. large-diameter gas lens body collet body Match standard, gas lens, large diameter, or short gas lens setup.	View on Amazon
Collet body	`3GL532LD`	CK 3 Series collet body - 5/32 in. large-diameter gas lens body collet body Match standard, gas lens, large diameter, or short gas lens setup.	View on Amazon
Collet body	`4GL20`	CK 3 Series collet body - .020 in. short gas lens body collet body Match standard, gas lens, large diameter, or short gas lens setup.	View on Amazon
Collet body	`4GL40`	CK 3 Series collet body - .040 in. short gas lens body collet body Match standard, gas lens, large diameter, or short gas lens setup.	View on Amazon
Collet body	`4GL116`	CK 3 Series collet body - 1/16 in. short gas lens body collet body Match standard, gas lens, large diameter, or short gas lens setup.	View on Amazon
Collet body	`4GL332`	CK 3 Series collet body - 3/32 in. short gas lens body collet body Match standard, gas lens, large diameter, or short gas lens setup.	View on Amazon
Collet body	`4GL418`	CK 3 Series collet body - 1/8 in. short gas lens body collet body Match standard, gas lens, large diameter, or short gas lens setup.	View on Amazon
Collet body	`4GL532`	CK 3 Series collet body - 5/32 in. short gas lens body collet body Match standard, gas lens, large diameter, or short gas lens setup.	View on Amazon
Collet	`3C20`	CK 3 Series collet - .020 in. standard collet collet Match tungsten diameter exactly.	View on Amazon
Collet	`3C40`	CK 3 Series collet - .040 in. standard collet collet Match tungsten diameter exactly.	View on Amazon
Collet	`3C116`	CK 3 Series collet - 1/16 in. standard collet collet Match tungsten diameter exactly.	View on Amazon
Collet	`3C332`	CK 3 Series collet - 3/32 in. standard collet collet Match tungsten diameter exactly.	View on Amazon
Collet	`3C418`	CK 3 Series collet - 1/8 in. standard collet collet Match tungsten diameter exactly.	View on Amazon
Collet	`3C532`	CK 3 Series collet - 5/32 in. standard collet collet Match tungsten diameter exactly.	View on Amazon
Collet	`3C040GS`	CK 3 Series collet - .040 in. wedge collet collet Match tungsten diameter exactly.	View on Amazon
Collet	`3C116GS`	CK 3 Series collet - 1/16 in. wedge collet collet Match tungsten diameter exactly.	View on Amazon
Collet	`3C332GS`	CK 3 Series collet - 3/32 in. wedge collet collet Match tungsten diameter exactly.	View on Amazon
Collet	`3C418GS`	CK 3 Series collet - 1/8 in. wedge collet collet Match tungsten diameter exactly.	View on Amazon
Collet	`3C532GS`	CK 3 Series collet - 5/32 in. wedge collet collet Match tungsten diameter exactly.	View on Amazon
Collet	`7C20`	CK 3 Series collet - .020 in. reverse collet collet Match tungsten diameter exactly.	Buy link unavailable.
Collet	`7C40`	CK 3 Series collet - .040 in. reverse collet collet Match tungsten diameter exactly.	View on Amazon
Collet	`7C116`	CK 3 Series collet - 1/16 in. reverse collet collet Match tungsten diameter exactly.	View on Amazon
Collet	`7C332`	CK 3 Series collet - 3/32 in. reverse collet collet Match tungsten diameter exactly.	Buy link unavailable.
Collet	`7C418`	CK 3 Series collet - 1/8 in. reverse collet collet Match tungsten diameter exactly.	Buy link unavailable.
Collet	`7C532`	CK 3 Series collet - 5/32 in. reverse collet collet Match tungsten diameter exactly.	Buy link unavailable.
Heat shield	`300HS`	CK 3 Series standard heat shield heat shield Used with standard CK 3 Series setup.	View on Amazon
Heat shield	`3GHS`	CK 3 Series gas lens heat shield heat shield Used with gas lens setup.	Buy link unavailable.
Heat shield	`3GHSLD`	CK 3 Series large-diameter gas lens heat shield heat shield Used with large-diameter gas lens setup.	Buy link unavailable.
Heat shield	`4GHS`	CK 3 Series short gas lens heat shield heat shield Used with short gas lens setup.	Buy link unavailable.
Back cap	`300L`	CK 3 Series long back cap, equivalent 57Y02 back cap Confirm torch clearance and back-cap length.	View on Amazon
Back cap	`300M`	CK 3 Series medium back cap, equivalent 34015 back cap Confirm torch clearance and back-cap length.	Buy link unavailable.
Back cap	`300S`	CK 3 Series short back cap, equivalent 57Y04 back cap Confirm torch clearance and back-cap length.	View on Amazon

Replace first

Common Wear Guidance

1. Identify the head

Series 2 and Series 3 Flex-Loc heads use different front-end parts.

2. Verify handle and cable

Confirm modular handle, cable, and cooling setup before buying a replacement head.

3. Match the consumable series

Route to Series 2 or Series 3 breakdown only after the head is confirmed.

Verify fitment

Check Before Ordering

Confirm torch family first

CK front-end parts are series-specific. Match the torch family before ordering cups, collets, or gas lens parts.

Match tungsten diameter

The collet and collet body must match the tungsten diameter. A near-match can cause poor arc starts or loose tungsten.

Standard vs gas lens

Do not mix standard collet bodies, gas lenses, and large-diameter gas lens cups unless the setup is confirmed.

Related consumables

CK Series 2 Breakdown

Use for FL130 / FL230 style head paths.

Open support

CK Series 3 Breakdown

Use for FL150 / FL250 style head paths.

Open support

CK TIG Adapter Support

Open adapter and connector support.

Open support

Need More Help? Troubleshooting, FAQs, and deeper TIG setup notes

TIG unstable arc

Inspect tungsten contamination, collet tightness, gas coverage, and work connection first.

Open troubleshooting

TIG torch overheating

Verify amperage range, cooling flow on water-cooled torches, and front-end fitment.

Open troubleshooting

TIG gas coverage

Cup size, gas lens seating, flow rate, and drafts are the common checks.

Open TIG support