Brass Push>Connect Metric Tube Fitting, 12.00 mm Tube OD Union

With a union body and a 12.00 mm tube OD connection, it’s meant to connect two runs of 12 mm metric tube in a straight-through union setup using the push-connect ends.

Cooling lines are covered along with compressed pneumatic, instrumentation circuit, and lubricant lines. Brass construction with a Buna-N O-ring seal handles that range of service well, and the nickel plating adds a layer of durability on top of that. If you happen to need it for something with more aggressive fluid compatibility, Viton O-rings are available on request.

These brass fittings are indeed suitable for compressed air. They're often used in pneumatic instrumentation and circuit lines. Just keep in mind the pressure limit is 250 psi depending on your tube size.