3/8″ Brass Air Line Union – DOT Approved, 10-Pack

Upgrade your air brake or pneumatic system with these **DOT-approved 3/8″ brass unions**, designed for reliability and ease of installation. Crafted from **solid CA360 brass**, these push-to-connect (PTC) fittings deliver **exceptional durability**, resisting corrosion and withstanding pressures up to **250psi** across a wide temperature range (-40°F to 160°F). Whether you're repairing air suspension kits, brake lines, or other pneumatic applications, these unions ensure a **secure, leak-free connection** every time.

The **quick-connect design** eliminates the need for tools—simply insert the tube into the fitting and press the button to lock it in place, or pull to release for disassembly. The **360° rotating joint** allows for flexible routing, making installation straightforward even in tight spaces. Compatible with standard 3/8″ nylon air lines and automotive air brake systems, these fittings meet **DOT FMVSS 571.106** and **SAE J1131** requirements for air brake safety. Order your **10-pack today** and experience hassle-free, high-performance connections for your air suspension or brake line repairs.