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Certifications
Mfr. Part #: NB121-006-000
Ships same day with standard 2-day shipping if ordered M-F before 3PM PT.
Brass push-in pneumatic reducer NB121-006-000 reduces 6mm to 4mm tubing, with Buna-N seal and easy-release ring for reliable, leak-free connections.
Key Features:
• Brass push-in pneumatic reducer fitting
• Reduces from 6 mm outward diameter tubing to 4 mm tubing
• Includes built-in brass release ring for easy tube disconnection
• Buna-N O-ring seal for leakage protection
• Rated up to approximately 265 psi
Common Applications:
• Joining different-diameter tubing in pneumatic systems
• Compact fluid or air routing in OEM machinery
• Pneumatic control panels needing quick-change fittings
• Industrial automation where space-efficient connectors are essential
| Specification | Details |
|---|---|
| Model | NB121-006-000 |
| Type | Brass Push-In Pneumatic Reducer Fitting |
| Tube Size (Inlet) | 6 mm Outer Diameter |
| Tube Size (Outlet) | 4 mm Outer Diameter |
| Seal Material | Buna-N O-ring |
| Connection Feature | Built-in brass release ring for easy disconnection |
| Pressure Rating | Up to approx. 265 psi |
| Applications | Pneumatic tubing size reduction, OEM machinery, quick-connect systems, industrial automation |




ID #: 139809