Push To Connect Straight Union Tube Fitting 4mm OD X 4mm OD Pneumatic Connector For Air Lines Quick Connect Reusable Durable Elliptical Sleeve Design Pack Of 10

Push-To-Connect 4mm Straight Union Fittings, Pack of 10
✔️ 4mm OD quick-connect, reusable, elliptical sleeve, 0-150 PSI

These push-to-connect straight union fittings are built for fast, tool-free air connections on 4mm OD tubing. They’re ideal for lightweight pneumatic lines in hobby projects, CNC setups, or compact automation tasks.

✅ 4mm OD compatibility with polyurethane or nylon tubing
✅ Quick-connect, reusable design for multiple connections
✅ Straight union with same diameter ends for easy inline plumbing
✅ Operating pressure range 0-150 PSI for standard pneumatic tasks
✅ Elliptical sleeve design for secure grip and leak-resistant seals

💡 What is a push-to-connect air fitting used for with 4mm tubing?

These handy fittings are great for quick, tool-free air lines in small machines and DIY rigs. - Handy for quick, no-tools setup in compact pneumatic systems - Supports 4mm OD polyurethane or nylon tubing - Reusable design allows multiple connect/disconnect cycles - Elliptical sleeve improves grip and leak resistance