WECO Hammer union FIG 206 Threaded or BW XXH connected Male Nut & Female Nut & Seat Ring HAMMER UNION FIG 206The Hammer Union can be ... 200, Figure 206, Figure 400, Figure 600,Figure 602, Figure 1002, Figure 1003,Figure 1502 and Figure 2002.FIGURE 206 HAMMER ... seal against corrosion;Replaceable O-ring extends union service life. Weco Hammer Union FIG 206