Parker Tube Fitting Tee 3/8” OD Tubing Male Conn Gas Tight 316-JAPX SS USA 286X. This Parker male connector fitting connects 3/8” OD stainless steel tubing Tee. The fitting is made of 316 stainless steel. Nuts and ferrules is included. Nut threads are silver plated to prevent galling and seizing of the fitting when tightened. Male connectors are available for same-size pipe and tubing, or to adapt different sizes of pipe threads and tubing. These industry standard Parker compression-type fittings and components are precision manufactured and offer a gas-tight, metal-on-metal seal. They are available in standard fractional tubing sizes for making up stainless steel tubing. Polished surface finishes and high purity materials virtually eliminate these fittings as a source of system contamination. They can be used for any fluid flow application and provide leak-tight service from vacuum to positive pressure. These fittings offer consistent gaugeability upon initial installation and are easy to disconnect and retighten reliably. The two-ferrule design of these fittings are easy to install and no torque is transmitted to the tubing during installation. The two ferrules separate sealing and tube gripping functions; each ferrule is optimized for its function. Available Parker gap inspection gauges assure sufficient pull-up upon initial installation.