Replacement nut and compression sleeve for use with Global fittings. Stainless. Brand-specific/do not intermix with other brands. Reusable Compression Fittings - Tubes must often be joined together or adapted to other system components. Compression fittings employ a nut and ferrule which crimp onto the tube forming a detachable union that is stronger than the tube itself. Some fittings also adapt the tube to a 1/4" pipe thread (NPT). Additional Info: Global offers a wide selection of high pressure fittings for modern air and mixed-gas stations. Most fittings are available in plated carbon steel, stainless steel and brass. Service Pressures: 5,000 psi for steel / stainless. 3,000 psi for brass. Uses: Steel for normal compressed air applications, stainless for harsh marine environments. For oxygen / Nitrox service, use brass or stainless, but NEVER carbon steel (rusts). Threads: All fittings are 1/4" NPT or #4 JIC as denoted. Ordering: INDIVIDUAL STOCK NUMBERS INDICATE FITTING TYPE AND METAL AS DESCRIBED. Old part #47081.