Sleeve, Fitting Material Brass, Maximum Operating Pressure 120 psi, Maximum Operating Temperature 250 Degrees F, Overall Length 2 in, Specific Fitting Shape Sleeve, System of Measurement Imperial, Compatible Tube Outer Diameter 7/8 in, Standards NSF/ANSI 61 Annex G, Compatible Fitting Connection Type Compression, Compatible Tube Material Aluminum, Copper, Thermoplastic, Minimum Operating Temperature 40 Degrees F Eliminate the need to flare, solder, or otherwise prepare tubing before assembly with this sleeve. The fitting is suitable for use with annealed copper, aluminum, and thermoplastic tubing where excessive vibration or tube movement is not involved. Sleeve is certified for use in potable water applications.