US Patent 12000508 Hammer union

A hammer union is provided for reducing and, in most instances, eliminating the likelihood of sealing ring displacement during fluid operations. The hammer union comprises a male pipe member, a union nut placed over the male pipe member, a female pipe member, and a sealing ring. The female pipe member includes a sealing pocket having an arcuate portion, a vertical portion, a base, and a recessed groove. The sealing ring is captured between the male pipe member and the female pipe member such that the sealing ring engages the sealing pocket of the female pipe member at each of the arcuate portion, the vertical portion, the base, and the recessed groove.