American Seal & Engineering - metal seals, metallic seals, high pressure seals, high temperature seals, high performance seals


Advancements in Aerospace performance have resulted in increased engine temperatures for longer distances at higher altitudes. These factors demand hydraulic systems that are more reliable while operating at higher pressure. Leakage and loss of pressure caused by the degradation of elastomeric or polymer based seals are a problem and primary reasons for failure in hydraulic systems. The AmeriSeal Boss Seal is designed to handle high pressures and temperatures for long service cycles.


Boss seals are produced from high temperature alloy (AMS 5598). A soft plating on the seal is highly recommended to eliminate galling and fretting between the seal and metallic mating components. Silver plating on the AMS 2410 specification with a thickness of 0.001 is recommended.

Other Plating and Coating

  • Copper
  • Gold
  • Soft Nickel
  • Teflon

Boss Seal Specifications

Materials: High Temperature Alloys
Temperature range: -65°F to 1200°F
Pressure: Up to 10,000 psi


  • Pressure energized for enhanced sealing
  • Metallic insert captures seal and ensures proper alignment
boss seals, o-ring boss seals, metal to metal seals, high performance seals

Industries Boss Seals are commonly used in:

  • Aerospace
  • Nuclear
  • Chemical & Plastics
  • Space

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