Grayloc Compact Flanges (GCFs)


Grayloc compact flanges (GCFs) incorporate our proven metal-to-metal technology into a bolted flange design. Including the Grayloc seal ring in a compact flange design provides a solution with significant space and weight savings that outperforms conventional flanges.

  • Grayloc metal-to-metal seal
  • Self-energized and pressure-enhanced seal
  • Space and weight are less when compared to conventional flanges
  • Optimized bolting configurations
  • Engineered to industry standard design codes, including ASME and API
  • Visual indication of proper assembly
  • Reusable seal rings

  • Eliminates fugitive emissions with zero leakage seal (10-6 atm cc/s helium)
  • Enables significant space and weight savings
  • Reduces installation time with smaller and fewer bolts
  • Lowers maintenance cost
  • Minimizes spare parts inventory
  • Eliminates mismatches common in male and female designs with standard seal interfaces
  • Enables design of lightweight and compact piping systems using integral fitting configurations
  • Enables integrating Grayloc hub profiles into third-party (OEM) products

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