Black Nut –Blue Subs
A precision O-ring seal plus seal ring and insulation ring to provide a 35 mllionohms resistance across the union. Ideal for production systems with electrolytic corrosion and service up to 2,000 psi NSCWP*.
Hammer unions are available in a wide range of sizes and in working pressures to 20,000 psi. Pressure seal, non-pressure seal, and welded styles are offered in various sizes and pressures. All SPM hammer unions provide pressure-tight, positive sealing and are available for standard service and sour gas models. SPM hammer unions for sour gas service are specially heat-treated for controlled hardness and utilize fluorocarbon elastomer seal rings.