Hammer Union Seals
Hammer union seals are used in the connections between flexible
hoses or pipes used in the oil drilling industry. The seal provides
a critical fluid tight connection within the union hardware. Hammer
unions consist of a thread end, a nut end, and a hammer nut that
when tightened seal the assembly with the assistance of an
The seal is lipped to prevent it from falling out when inverted.
Some profiles such as Fig 2202, Fig 1004, Fig 1502, Fig 2002, Fig
602, Fig 1002 etc require a Hammer Union Lip Seal or an ‘O’Ring
depending on the Size of the Hammer Union. We produce 2,3, and 4
Hammer Union Seals in Nitrile for standard service and in FKM/FPM
Viton or HNBR for Sour Gas Service.
In addition to the standard molded rubber seals, we offer these
with either a brass or stainless steel anti-extrusion ring. Also
available in PTFE/Teflon,TPU,Hytrel ect.
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