Flat seal Boss

circularmetalstainless steel

Product overview
This specially designed metal boss seal conforms to hydraulic standard AS5202 (SAE) and is intended for aerospace port fittings. It offers a reliable metal-to-metal sealing alternative to elastomer O-rings that may fail under extreme temperatures, pressures or aggressive environments, while improving installation speed, weight and in-service performance.

Technology advantages

• Ease of installation: integrated seal geometry fits port fittings and can be installed rapidly without special tools or precision machining, reducing assembly time.
• Reduced weight: formed high-strength materials (Inconel variants) provide significant weight savings versus machined competitors, supporting fuel-efficiency and mass-reduction targets in aerospace systems.

Design options

• Symmetrical design for direct installation on the port thread.
• Positioning on the tube section using a jacket tail to locate the seal on the fitting sleeve.

Related documents
Technical handbook and case study documents are available for this product (English handbook and relevant case study available as downloadable PDFs on the product page).

Technical characteristics / specifications

• Standard: AS5202 (SAE)
• Materials: Inconel 718, X-750 with washer in stainless steel
• Applications: standard port fittings for aviation, space and nuclear use
• Temperature range: -250°C to +1100°C (−423°F to +2000°F)
• Pressure: high vacuum up to 5500 bar (79,770 psi)
• Dimensions (diameter): 30 mm to 4500 mm