They also come in a limited number of materials (most commonly brass) and are best suited for metal on metal connections. This video shows how compression fittings are installed on plastic and copper ...

Pneumatic fittings are parts used to connect sections of pipe, tube, and hose in pneumatic (pressurized gas ... which are convenient for applications requiring frequent disconnection and reconnection ...

When you over-tighten a compression fitting -- most often seen on small-diameter metal or plastic tubing -- it can damage the ...