O-ring seal

circularmetalstainless steel

Product overview

These metal face seals provide long service life and avoid failures common to non-metallic seals such as environmental incompatibility, outgassing or age-related deterioration.

Applications & usage

• Designed for static face sealing (not recommended for dynamic applications).
• Standard shapes: circular; also available in rectangular, racetrack and custom geometries.
• Typical applications: hot mould equipment, nuclear reactor vessels, gas turbines and other environments where elastomers or non-metallic seals are unsuitable due to temperature, pressure or chemical exposure.

Design & features

• Can be vented, gas-filled, pressurized or spring-energized to meet specific pressure and temperature requirements.
• Plating or coating options improve leakage control and surface performance.
• Available spring options: None, Alloy X-750, Alloy 718, 302 SS; also supplied without springs.
• Materials: Alloy X-750, 321 SS, Alloy 600 (other materials on request).
• Component is described as PFAS-Free* (no intentional addition of PFAS; trace presence not excluded due to environmental prevalence).

Standard specifications
Materials & springs: Alloy X-750, 321 SS, Alloy 600 (others on request) — Springs: None, Alloy X-750, Alloy 718, 302 SS
Used in: applications where elastomers and other non-metallic seals cannot provide required reliability (temperature, pressure, environment)
Temperature: -250°C to +1100°C (-423°F to +2000°F)
Pressure: high vacuum to 25,000 psi (1723 bar)
Leakage rate: 10^(-5) to 10^(-8) cc/sec He (depends on finish & coating)
Clamping load: 200–3700 lb/in (35–650 N/mm) or higher with spring-energized design
Dimensions: face/radial diameter 6 mm to 7000 mm (custom available); cross-section 0.89 to 12.70 mm; tolerances ±0.03 mm

Additional information

• Adaptability: seals can be vented, gas-filled, pressurized or spring-energized for specific conditions.
• Plating selection: improves leakage control and performance in aggressive environments.
• Manufacturer provides typical performance comparisons vs. FFKM O-rings, metal gaskets and spring-energized seals for reference.

Technical specifications

• Materials: Alloy X-750, 321 SS, Alloy 600 (others on request).
• Spring options: None; Alloy X-750; Alloy 718; 302 SS.
• Operating temperature: -250°C to +1100°C (-423°F to +2000°F).
• Operating pressure: high vacuum up to 25,000 psi (1723 bar).
• Leakage rate: 10^(-5) to 10^(-8) cc/sec He (dependent on finish & coating).
• Clamping load: 200–3700 lb/in (35–650 N/mm) or higher with spring-energized designs.
• Dimensions: face/radial diameter 6 mm to 7000 mm; cross-section 0.89 to 12.70 mm; tolerances ±0.03 mm.
• Typical applications: hot mould equipment, nuclear reactor vessels, gas turbines and other environments unsuitable for elastomeric seals.