The many benefits of using hammer union seals from Daemar

Hammer union seals suit cold-weather applications.

Businesses always benefit by investing in components from Daemar Inc. The company offers a range of shaft seals, including hammer union seals. Workers use these units in hammer-union-style pipe connections to create flow lines and prevent leaks. Hammer unions are especially designed to enjoin mud tanks instantly without managing the flanged connections. With their proven design, these shaft seals offer several advantages to users, especially in cold-weather applications.

Ensuring optimal field performance

Each hammer union has a thread end, a nut end, and a hammer nut that compresses a composite seal assembly when cinched up to prevent leaks. The assembly consists of a metal insert sized to pass into the seal groove of conventional hammer unions and a small seal acting between the insert, thread end, and nut end. This small seal is typically an O-ring or seal of a size that is compressed when the user inserts the assembly into the thread end of the hammer union.

If the mud tanks do not align correctly, hammer unions can still create non-leak seals that are tightened. They are heavy-duty, high-pressure flow-line connectors used in such industries as oil and gas, steel, chemicals, strip mining, and marine dredging.

Daemar’s hammer union seals have two proven designs for optimum performance. Seals for high-pressure services (6,000 to 20,000 pounds per square inch) have replaceable, lip-type seal rings in the female subs; these primary seals protect secondary metal-to-metal seals from abrasion and corrosion while minimizing flow turbulence. Non-pressure seal thread seals are designed for abrasive, high-pressure hammer union services in which welded connections are undesirable; this design provides strong, permanent end connections without butt welding. Hammer unions also have special rubber seal rings for positive sealing with minimal torque.

Engineered for the oil and gas sector, hammer union seals are built to work in all seasons. For cold-weather applications, they are manufactured with low-temperature-rated Nitrile Buna Rubber, which enables a single-seal option to minimize confusion in seal selection. Other relevant applications include cementing, fracturing, acidizing, testing, and choke-and-kill lines.

Daemar offers hammer union seals in standard and anti-extrusion designs.

For more information, contact Daemar.

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