Hammer lock unions are available in a variety of working pressures, and with metal seals or various elastomeric seals.
Figure 602 units are rated to 6000 psi and have a nitrile seal ring to improve the steel to steel seating.
The nuts and bodies are all forged steel 4" bodies are allow steel.
Warning: Never assemble any combination of male sub, wing nut, or segments that are not absolutely positively identified and assured to be identical in figure number, size, and pressure rating as mis-matched components will result in hazardous connections that can result in catastrophic failure.
Hammer lock union components that cannot be positively identified must never be used.
Never expose standard service products to sour gas fluids.