Hammer Union Seals

Large Inventory, Excellent Quality

Global O-Ring and Seal - Hammer Union SealsHUS Watermarked Picture

Hammer Union Seals are used in hammer union-style pipe connections to establish flow lines and prevent leakage. Hammer unions are made by Weco, FMC, and Kemper Valve among others and are used in the oil & gas industry, in steel mills, chemical plants, strip mining, and marine dredging.

Global O-Ring and Seal offers Hammer Union Seals in Nitrile (also known as NBR, Buna, or Buna-N) for standard service, as well as Viton (also known as fluoroelastomer or FKM) for increased temperature and chemical resistance or HNBR for Sour Gas Service or Teflon (PTFE). In addition to the standard molded rubber seals, anti-extrusion rings can be reinforced in brass Hammer Union Seals or stainless steel Hammer Union Seals.

We offer Hammer Union Seals in any of the following varieties:

  • 1-6 inches inside diameter (ID)
  • Nitrile, Viton, HNBR, and Teflon materials
  • All elastomer seals are 85-90 durometer
  • May be reinforced with brass or stainless steel anti-extrusion ring

Hammer Union Seal Types


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