PUC Metric Pneumatic Straight Union Fittings
The PUC straight union is a pneumatic one touch fitting for joining metric tubing in a straight connection. Select the fitting by the outside diameter (OD) of your tube.
Sizes and pack quantity
Available tube OD options are 3, 4, 6, 8, 10, 12, 14 and 16 mm. Each pack contains 10 pieces of the selected size.
Selection questions
Which measurement should I use? Match the selected Tube O.D option to your tube's outside diameter, not its inside diameter.
Is this the inch-size version? No. This listing is for metric PUC straight union fittings.
Where can I check dimensions? Refer to the original dimensional drawing and specification tables below. The first 3 mm table row repeats the PUC04 label, so confirm the model designation before ordering by model number.
Original specifications and dimensions
PUC Union Straight
Pneumatic One Touch Fittings
More Specification
| PUC Union Straight |
| Metric Out Diameter |
| PUC 04 |
| PUC 06 |
| PUC 08 |
| PUC 10 |
| PUC 12 |
| PUC 14 |
| PUC 16 |
| Model | ∅D | ∅P | L | E | ∅C | B | M |
| PUC04 | 3 | 10.5 | 12.8 | 33.9 | 3.3 | 14.8 | 4.5 |
| PUC04 | 4 | 10.5 | 12.8 | 33.9 | 3.3 | 14.8 | 4.5 |
| PUC06 | 6 | 12.5 | 15.3 | 36.4 | 3.3 | 16.4 | 6 |
| PUC08 | 8 | 14.8 | 18.4 | 39.2 | 4.1 | 18.3 | 7.5 |
| PUC10 | 10 | 17.5 | 20.1 | 43.5 | 4.1 | 19.7 | 7.8 |
| PUC12 | 12 | 20.5 | 23.7 | 48.3 | 4.1 | 22.9 | 9.9 |
| PUC14 | 14 | 23 | - | 50 | - | 23.7 | - |
| PUC16 | 16 | 25.5 | - | 51.6 | - | 24.1 | - |
