Hello dear community members! Please tell me what the name of this connector is? Perhaps someone knows its exact name, thank you!
The 3D printing term is usually PTFE Bowden tube connector.
Its more general industry name is pneumatic push-fit connector or pneumatic fitting, since the same style of connector is used in pneumatic and fluid systems.
Amazon search example:
As for replacing it, that depends on where it is located. If it is part of the extruder assembly, Creality unfortunately molded that fitting into the extruder cover on several models. When that connector fails, you may not be able to replace only the fitting with an off-the-shelf part. In that case, the entire extruder cover may need to be replaced.
Here are the generic specs for this style connector if you are shopping for replacements. I place it here for future reference if someone goes searching for Bowden Connector or PTFE Tube connector.
3D Printer PTFE Pneumatic Connector Specification
| Item | Specification / Description |
|---|---|
| Common connector type | Pneumatic push-to-connect fitting |
| Common 3D printer names | Bowden coupler, PTFE coupler, PC4 fitting |
| Common part numbers | PC4-M6, PC4-M10, PC4-01 |
| Tube compatibility | 4 mm OD PTFE tube |
| Typical PTFE tube size | 4 mm OD × 2.0 mm ID or 4 mm OD × 2.5 mm ID |
| Filament compatibility | Typically used with 1.75 mm filament systems |
| Tube retention method | Internal gripping teeth with push-release collar |
| Optional accessory | Retaining clip / collet clip to reduce tube movement |
| Common materials | Brass, nickel-plated brass, stainless steel, or aluminum |
Thread Variants
| Connector | Thread | Tube Size | Typical 3D Printer Use |
|---|---|---|---|
| PC4-M6 | M6 × 1.0 | 4 mm OD PTFE | Hotends, extruders, filament sensors, small threaded ports |
| PC4-M10 | M10 | 4 mm OD PTFE | Creality-style extruders, Bowden couplers, larger threaded ports |
| PC4-01 | 1/8" BSPT/R | 4 mm OD PTFE | Pneumatic hardware; less common on 3D printers |
Important Buying Notes
| Feature | Why It Matters |
|---|---|
| Pass-through fitting | Allows the PTFE tube to pass completely through the fitting; often needed where the tube must seat against the hotend or heatbreak path |
| Non-pass-through fitting | Tube bottoms out inside the fitting; acceptable for guide-tube use but not always suitable for hotend-side Bowden use |
| Tube OD is critical | The connector grips the outside of the tube, so the required size is 4 mm OD |
| Tube ID is secondary | 2.0 mm ID and 2.5 mm ID PTFE tubes can use the same PC4 fitting if the OD is 4 mm |
Practical Search Terms
| Application | Search Term |
|---|---|
| M6 threaded port | PC4-M6 pneumatic push fitting, M6x1, for 4mm OD PTFE Bowden tube |
| M10 threaded port | PC4-M10 pneumatic push fitting, M10, for 4mm OD PTFE Bowden tube |
| Hotend pass-through use | PC4-M6 pass-through fitting for 4mm OD PTFE tube |
1 Like
What @JoeFriday said if you are talking about that white PTFE tube thingy.
If you mean the electrical connector like in the second picture than it could be a JST-style wire-to-board connector like a JST-XH, 2.5 mm 3 pin.
1 Like
