Brass Spring Seat A small brass spring seat washer used behind a spring in steam wand assemblies on Spanish-manufactured espresso machines. It gives the spring a flat, even surface to push against so the wand valve seats consistently. SPECIFICATIONS Dimensions: 14.5 x 7 x 2 mm Material: brass COMPATIBILITY Fits: steam wand assemblies on various Spanish-made espresso machines Replaces: F_4173 INSTALLATION A quick swap for a technician while the steam wand assembly is already apart for service. PRO TIPS Spring seats like this one look generic but vary by a millimeter or two between models, measure your worn original's OD, height and thickness before ordering rather than going by eye.