CheeMuii DOT Brass Air Fittings Kit — 136‑Piece Push‑to‑Connect CA360 Brass, DOT‑Compliant

This kit gathers a broad selection of DOT‑compliant push lock fittings and related hardware so you can build, repair, or modify air brake and pneumatic lines without sourcing pieces individually. Manufactured from CA360 pure brass, the components meet D.O.T. FMVSS 571.106 and SAE J1131 guidance for air brake systems while delivering corrosion resistance and reliable sealing across common working temperatures and pressures.

What sizes and fitting types are included in the 136‑piece set?

The assortment covers four common DOT tubing sizes — 5/32" (1/8"), 1/4", 3/8" and 1/2" — and provides multiple functional shapes to handle routing and connections. You get straight unions, tees, 90° elbows, 360° swivel elbows and a mix of push and NPT male fittings for threaded joins.

• 12 DOT brass tee fittings for branch lines
• 34 straight unions for inline connections
• 36 straight push & NPT male fittings for hose to thread joins
• 18 90° push & NPT elbows for tight routing
• 12 360° swivel elbows to reduce hose twist
• 12 brass bushings and 6 couplings for thread size changes

How durable and safe are the CheeMuii DOT fittings?

All fittings are made from CA360 pure brass chosen for corrosion resistance, ductility at elevated temperatures and low permeability, which helps preserve air system integrity. The components comply with D.O.T. and SAE recommendations for air brake line hardware, and many pieces include pre‑applied sealant on NPT male threads to improve the initial seal.

• CA360 brass construction resists rust and wear
• Meets D.O.T. FMVSS 571.106 and SAE J1131 guidance
• Pre‑applied NPT sealant reduces leak troubleshooting
• Designed for long service life under normal use

What pressure, temperature, and installation limits should I expect?

The push‑lock DOT fittings are rated to operate from vacuum to 800 PSI and across wide temperatures. Operating range is listed from -40°F to +248°F (-40°C to +120°C); however, always cross‑check with the tubing manufacturer’s specifications for combined pressure and temperature performance.

• Pressure capability: vacuum to 800 PSI (application dependent)
• Temperature range: -40°F to +248°F (-40°C to +120°C)
• Push‑to‑connect installation for most lines — push in, secure
• Threaded joints include pre‑applied sealant for better sealing

What extra tools and accessories come with the kit?

The package includes several convenience items so you can complete installs without immediate additional purchases. A tube cutter and Teflon tape are included, plus inflation Schrader valves for direct air spring access and protective caps to keep contaminants out.

• Tube cutter for clean, square tubing cuts
• Teflon tape for supplemental thread sealing
• Four 1/4" brass Schrader inflation valves with caps (3/4" thread length)
• Protective caps to keep dirt and mud away from valve stems

Who is this kit best suited for? The CheeMuii 136‑piece DOT brass fittings kit is aimed at technicians, mechanics, fleet managers, and DIY vehicle enthusiasts who service air brake systems, air suspension components, or any DOT‑specified pneumatic lines. It's especially useful when you need a wide selection of push‑lock and NPT options on hand for troubleshooting, custom runs, or replacing worn fittings without repeated part orders.