Swagelok SS-1610-61 gaugeable 316 stainless steel tube fitting — bulkhead union, 2 × 1 in. tube OD. Body in 316 stainless steel with the Swagelok two-ferrule (front-ferrule/back-ferrule) mechanical-grip tube end for a gaugeable, leak-tight connection on instrumentation and fluid-system tubing. The fitting provides a in-line 1 in. tube-to-tube connection with a threaded bulkhead body and locknut for panel/bulkhead mounting. Supplied with Standard Cleaning and Packaging (SC-10). Working pressure and temperature ratings are determined by the selected tubing per Swagelok catalog MS-01-140; use with correspondingly sized, fully annealed 316/316L stainless steel tubing.