What Are Hammer Union Seals? Hammer unions are critical pipe connectors used in oilfield systems for transferring high-pressure fluids such as drilling mud, crude oil, and fracturing fluids. Each hammer union connection relies on a precision-engineered seal ring to ensure a leak-free joint under extreme pressure and temperature conditions. At XHH Seals, we manufacture high-performance hammer union seal rings designed to provide reliable sealing in harsh environments—up to 15,000 psi. XHH...

In demanding industries such as oil & gas, chemical processing, LNG cryogenic, and high-pressure / high-temperature (HPHT) service, the valve stem sealing system is one of the most critical challenges for engineers. Under the combined assault of pressure cycling, extreme temperatures, and aggressive media, traditional elastomeric seals (such as O-rings) fail prematurely — resulting in leakage, fugitive emissions, and unplanned downtime. XHH Seals specializes in developing Spring...