Metal O-Rings

A reliable source for O-Ring information and leading O-Rings Companies & Manufacturers.

While elastomers continue to be a common choice for o-ring production, metals offer better temperature, pressure and corrosion resistant capabilities. These essential properties and others allow the use of this particular type of o-ring in aerospace, nuclear, power generation, semiconductor, oil and gas industries. Read More…

Metal O-Rings Metal o-rings are round, disc shaped devices used predominantly for sealing applications in a broad array of industries, though they are also manufactured to suit a variety of alternative industrial purposes.

Leading Manufacturers

Chandler, AZ  |  480-892-7325

Since 1989, we have been an o-ring distributor. We offer commercial, FDA, military, metric o-rings, caps, plugs, gaskets & more. Custom, rubber o-rings, metal o-rings, diaphragms, face seals and non-standard o-rings are also offered.

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Arizona Sealing Devices, Inc. $$$

Sparta, NJ  |  973-383-2487

A leading o-ring manufacturer of quality metric seals for industries worldwide, defines Allied Metrics Seals & Fasteners. We offer FDA-approved elastomers, Teflon® seals, o-rings & much more. Choose from o-ring sizes, metal & plastic o-rings, o-ring kits, o-ring seals, silicone o-rings, EPDM o-rings, static o-rings, etc. Call/visit our website for more information about our products & services!

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Allied Metrics Seals & Fasteners, Inc. $$$

Arlington, TX  |  817-640-1193

Texas Seal Supply Co., Inc. is a franchised distributor for Parker Seal Co., a division of Parker Hannifin Corporation. It has served the military, commercial, aerospace and the oil field industry nationwide since 1971. We have an inventory of military and industrial seals (O-rings, back-ups, hydraulic seals, thred-seals, stat-o-seals and all types of packing seals for hydraulic and pneumatics).

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Texas Seal Supply Co., Inc. $$$

Clarkston, WA  |  208-413-6377

We manufacture a wide variety of o-rings for a number of industries including: food handling, irrigation, oil & gas, pool & spa, semiconductors, automotive, aviation, hydraulic, pneumatic, fluid power, chemical processing specialty OEM and much more. We make it easy to find the specific o-ring you are looking for and our experts will work with you every step of the way.

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The O-ring Store, LLC $$$

Lancaster, NY  |  716-684-7600

Sealing Devices is a leading North American distributor & fabricator of o-rings, gaskets, seals, adhesives and EMI shielding for industrial, aerospace, medical and military applications.

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Sealing Devices Inc. $$$

Littleton, MA  |  800-882-3666

Atlantic Rubber, an o-ring manufacturer, can satisfy your needs for quality precision o-rings that meet ASTM, SAE, AMS, AS568, JIS, Metric or other specific requirements. Choose from static o-rings, metal o-rings, o-ring kits, plastic o-rings & more.

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Atlantic Rubber Company, Inc. $$$
placeholder image Arizona Sealing Devices, Inc. Allied Metrics Seals & Fasteners, Inc. Texas Seal Supply Co., Inc. The O-ring Store, LLC Sealing Devices Inc. Atlantic Rubber Company, Inc.

Metal o-rings are discs that are placed in piping, tubing, valves, vacuums and the like to create an impermeable seal within a joint, thereby blocking the passage of gases or liquids. Metal may be used in dynamic joints, though it is best suited to static compression.

When in place, the o-ring creates a four point seal unique to metal rings. Metal rings may also have plastic jackets, which abandon the four point seal in favor of the full contact of an elastomer product. Compression deformation causes the rubberized coating to spread and fill any cracks and gaps that might be found in the surrounding materials.

Just as metal o-rings sometimes utilize plastic attributes, metals such as carbon are used as fillers for elastomer compounds to prevent electrical arcing and static sparks.

There are three basic types of metal o-ring seals. Plain, self-energized and pressure-filled o-rings are all formed using die casting methods. Aluminum, nickel, silver, copper, steel alloys, inconel and gold are common materials utilized in the production of o-rings. There are also plastic based o-rings on the market, commonly cut from synthetic rubbers like viton and silicone.

Additionally, Teflon, cadmium, copper, nickel, silver, gold and indium may be used to plate or coat rings to increase corrosion resistance, fit and strength. Metal o-rings can also be heat-treated, age-hardened or annealed. The finishing requirements are determined by the specific use of an o-ring and the materials it will contain.

Heavy liquids, for example, do not generally require coating. Volatile fluids and gases such as helium or hydrogen, however, should be handled with extreme caution. Coating an o-ring containing volatile fluids will not only improve the quality of the seal, but act as a safety measure as well.

When selecting a base material or top coating, a buyer must also consider the temperature requirements of an application, since the useful temperature range of metal o-rings varies from -450°F to over 1300°F. No matter the material, o-rings play an integral role in the safe operation of many machines and must therefore be subject to rigid visual and dimensional inspection. Material, finish, temperature range, pressure range, vacuum range and diameter should all be carefully considered in the selection of a metal o-ring.

Metal O-Rings Informational Video