Omniseal® Metal Spring-Energized Face Seals

Metal Spring-Energized Face Seals

This face seal is designed with a spring-energizer in a C-Seal jacket, which is a self-pressure, activated design to provide an effective metal-to-metal leak proof solution. The proper combination of the base materials and surface coatings make it possible to seal almost any fluid at extreme temperatures and pressures without deterioration of the seal over extended periods of time. 

See More

Spring-energized face seals are used for higher leakage requirements. They are used in pressure vessels, hand-holes, and steam generators.

Standard Specifications
Materials & Springs

Materials: Alloy X-750, Alloy 718, 304 SS (other materials on request)

Springs: Alloy X-750, Alloy 718, 302 SS, Elgiloy®, Nimonic 90

Used in

Highly demanding applications in leakage rate with high load available


Cryogenic to +1100°C (+2012°F)


Ultra high vacuum to 79,770 psi (5,500 bar)

Leakage Rate

e-2 to e-12 mbar*l/s (depending on the post treatment)

Clamping load

Between 70 to 800 N/mm


Face Diameter / Radial Diameter: 9.5 mm to 4500 mm
Cross-section: 1.19 to 12.7 mm
Minimum Tolerances: -/+0.05 mm

Omniseal Solutions can help you with your project


A team of expert designers


Customized solutions & materials to suit your projects

Space Satellite

Expert of precision seals

Omniseal Solutions can help you with your project

Seal Function & Motion


Installation Facilitation

The energizing spring exerts uniform pressure on the jacket and keeps a pre-set load on the seals. This unique design requires moderate sliding force, which can be adjusted to prevent seal deterioration and surface damage in dry or poorly lubricated applications.

ASE Group

Design (Special Shapes)

Spring-energized C-Seals are made in circular and non-circular configurations. The non-circular shapes in most cases require special tooling. There is also a very important relationship between the free height and the corner radii on these seals. Some of the non-circular shapes we are currently producing are square, rectangular, oval, and racetrack.

Industry & Case Studies

Take a closer look at case studies that detail this metal seal's high performance.