| http://www.w3.org/ns/prov#value | - BRIEF DESCRIPTION OF THE DRAWINGS [0018]FIG. 1 is a side view of a conventional hammer union having a conventional seal assembly, certain parts being broken away for clarity of illustration; [0019]FIG. 2 is a partial broken side view, similar to FIG. 1, of a hammer union incorporating the seal assembly of this invention; [0020]FIG. 3 is an enlarged partial side view showing a seal assembly of this
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