Metal Seal Rings: Uses and Applications

No industry utilizing metal moving parts can be without metal seal rings. These static devices can handle the vacuums, temperature extremes and pressures inherent in certain industries from the automotive industry to the nuclear industry. Learn more about them below.


Metal seal rings are designed for specific application and as such, come in a variety of shapes. Standard shapes include oval, square, oblong, rectangular and rounded. The seal rings are designed with a certain diameter and length for specific applications. Seals can be annealed, heat-treated or age-hardened for certain applications. Find the right seal rings for your industry at

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Depending on the need of the industry, metal seals are available as pressure-filled, plain or self-energized. Self-energizing O-rings and C-rings work well under pressure. W-rings and E-rings have additional applications. V-rings and U-rings can withstand temperatures and pressures over a wide range.


A variety of materials are used to make metal seal rings depending on their use and application. They can be plated with gold, cadmium, indium, nickel, copper or silver. The performance needs of the seal dictate the type of metal it’s coated with.


Certain seal rings are designed to withstand low temperatures such as those used in cryogenic conditions. Industries that use metal seal rings include power generation, aerospace and nuclear. Some seal rings are rated for use with corrosive substances such as solvents and acids for chemical companies. The oil and gas industry use seal rings for diesel fuel, engine oil and gasoline applications. Semiconductors and industrial valves and pipes make use of metal seal rings.

Knowing what metal seal rings are used for and why can help you in your industrial work and talk with your mechanic. The industrial applications of metal seal rings are extensive. With technology constantly changing, metal seal rings offer an opportunity to keep those projects operating effectively.