Grayloc Seal Rings

Grayloc Seal Rings

Metal Seals » Grayloc Seal Rings

Munaco Sealing Solutions, Inc. carries the full line of Grayloc connectors, hubs, clamps, seal rings, and hardware specifically designed for extreme service conditions. These connectors are lighter weight and require a smaller footprint to a comparible standard bolted flange for the same high pressure and temperature conditions. The Grayloc connector can be positioned for optimal access for maintenance and teardowns when servicing mating equipment. Replacement Grayloc gasket seals are affordable and readily available from Munaco.

  • Applications up to 1700°F
  • Temperature change rates up to 300°F/hour
  • Helium leak rates of 10^-6 cc/s
  • Full vacuum service
  • Up to 60,000 psi
  • Vibration tolerance 200 cycles per second under 6,600 psi
  • Withstands vibration and thermal shock
  • Withstands piping compressive and tension loads
  • Withstands piping bending forces
  • Withstands severe situations without routine maintenance
  • Versatile design, quick changeovers, saves time and money
  • Carbon steels
  • Stainless steels
  • NACE
  • 17-4 PH
  • PTFE and molybdenum disulfide coatings available
  • GRAYLOC® Brochure
  • 1/2" to 24" nominal pipe sizes
  • Restriction and Orifice seal rings
  • Blind and Transition seal rings
  • Heavy duty clamps
  • Engineered hubs, fittings, and accessories


NACE Applications

Natural Gas


Fertilizer Processing

Oil & Gas Processing


Oil Drilling



Fuel Lines

Vessel Closures

Hazardous Waste

Reactor Nozzles

Coal Gasification

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Contact us by Phone800-986-2055