Airtac BZ External Hex Plug BZ02
The AirTAC Airtac BZ External Hex Plug BZ02 is a genuine hexagon head cap plug rated to 3.0 MPa proof pressure and 0 to +150 °C, for joining threaded pipe runs.
- TypeHexagon head cap plug
- SeriesBZ
- Working pressure0 - 1.0 MPa (0 - 10 kgf/cm2)
- Proof pressure3.0 MPa
- Temperature0 to +150 °C
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac BZ External Hex Plug BZ02
The BZ02 is a hexagon head cap plug with a single 1/4in PT male thread and nothing on the other end - its whole job is to close off a port you are not using. The hex head takes a standard spanner, the nickel-plated body threads straight into any PT-tapped boss, and the blanked port stays sealed for the life of the circuit.
This family is rated for 0-1.0 MPa working pressure, carries a 3.0 MPa proof pressure - roughly twice what a one-touch resin fitting survives - and works from 0 to 150 C. It also holds vacuum down to -750 mmHg. That combination is why a plain metal plug like this turns up on hot manifolds and dryer circuits where a plastic stopper would soften, creep or crack.
Airtac BZ External Hex Plug BZ02 Technical Specifications
| Model | Airtac BZ External Hex Plug BZ02 |
|---|---|
| Type | Hexagon head cap plug |
| Series | BZ |
| Connection | Threaded both ends |
| Working pressure | 0 - 1.0 MPa (0 - 10 kgf/cm2) |
|---|---|
| Negative pressure | -750 mmHg (10 Torr) |
| Proof pressure | 3.0 MPa |
| Temperature | 0 to +150 °C |
| Thread standard | PT (Rc tapered) unless the code says otherwise |
Nickel-plated metal body. AirTAC does not publish a per-part material breakdown for this family. This family is rated to 150 °C, but the TUBE is usually the limit - confirm your tubing's temperature rating before running it hot. AirTAC publishes flow as a characteristic curve rather than a single figure, so no L/min value is listed.
Model Code: Airtac BZ External Hex Plug BZ02
| BZ | Hexagon head cap plug. |
|---|---|
| 4 / 6 / 8 / 10 / 12 | Tube outside diameter in mm (3.2 mm exists on the mini series). |
| M5 / 01 / 02 / 03 / 04 | Thread: M5x0.8, 1/8", 1/4", 3/8", 1/2" (M3 on the mini series). |
| D | Black. Blank = grey. |
Fitting & Sealing Notes
- check Cut the tube square and clean before pushing it home, or the seal will leak.
- check Push until it stops, then pull back to check the chuck has gripped.
- check To release, press the collet ring fully in and pull the tube out.
- check Threaded parts arrive with sealant on the thread; M5 sizes use a sealing gasket.
- check Match the tube OD exactly - a 6 mm fitting will not hold 1/4" tube.
Where the Airtac BZ External Hex Plug BZ02 Is Used
Injection mould tool manifolds
Blanking spare 1/4in PT ports on mould-cooling and core-pull air circuits, where the platen area runs hot enough to distort a resin cap.
Compressor aftercooler pipework
Sealing unused gauge or drain taps on the 1/4in PT take-offs of an aftercooler and receiver set, where the discharge air is well above ambient.
Bakery oven burner controls
Capping redundant pilot ports on gas-train and oven-cooling air lines near a commercial bakery oven, where the local temperature rules out plastic plugs.
Is the Airtac BZ External Hex Plug BZ02 the Right Part?
BZ02 plugs a 1/4in PT port. Step down to BZ01 for a 1/8in port - the usual choice on compact valve and manifold blocks - or up to BZ03 and BZ04 for 3/8in and 1/2in ports on main air headers and larger castings. The thread ladder is the only thing that changes; the ratings are identical across all four sizes.
Before fitting, note that PT is a tapered thread: wind a few turns of PTFE tape or apply a thread sealant so the taper does the sealing, then snug the hex with a spanner. If a port on a high-temperature machine only needs closing off, a BZ plug is the honest answer - it beats leaving a fitting and a stub of tube looped back on itself just to cap an opening.
Quick checklist
- ✓ Tube outside diameter matches exactly
- ✓ Thread size and standard match the port
- ✓ Working pressure within 0 - 1.0 MPa (0 - 10 kgf/cm2)
- ✓ Temperature within 0 to +150 °C
Airtac BZ External Hex Plug BZ02 FAQ
Working pressure 0-1.0 MPa (0-10 kgf/cm2), proof pressure 3.0 MPa, temperature 0 to 150 C, vacuum down to -750 mmHg (10 Torr). The thread is a single 1/4in PT male taper thread and the body is nickel plated.
Yes to both. PT is a tapered thread, so a few turns of PTFE tape or a thread sealant is what makes the joint tight - the hex is for wrenching, not for sealing. Once taped, the plug also seals against vacuum, with the family rated to -750 mmHg.
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