-Description and Applications of Metallic "O" Ring Seals
The Evergo O-Ring Seals are used when elastomers and other non-metallic seals will not seal properly or do not offer the required reliability for the application, usually as a result of temperatures, pressures, or the environment. Evergo O-Ring Seals are long lasting seals and unlike non-metallic seals, they are not subject to failure due to incompatibility with the environment, out gassing or from deterioration due to age.

Evergo O-Ring Seals are generally fabricated from tubing consisting of stainless steel SUS321 or high temperature alloys such as Inconel, or other material as requirement. These materials are frequently used because they offer resilient properties that enable the seal to "Spring-Back".

We welcome the opportunity to design a seal to fit your application. Whether you are sealing gases or liquid -250^oC to 980⁰C, 10^-10 Pa to 300MPa. We have the capability to produce a suitable seal from available material.

-Product system:

-The following are key elements in specifying the proper seal determining the base material:

·  Temperature limits/duration

·  Media to be sealed

·  System pressure

·  Available seating load

-Plating and Coatings
Plating or Coating of the O-Ring Seal provides a soft malleable surface that will smear into small imperfections in the mating hardware, enhancing seal performance.

-Shaped Seals
Metallic O-Ring Seals can be produced in various shapes. The availability of shaped O-Ring permits the design engineer to select the shapes. However, we recommend contacting our Technical Service staff for design assistance of seal and groove.

-Application Characteristics
The typical application places a Metallic O-Ring Seal in an axial compression between two parallel surfaces, which are square to the fluid passage or vessel axis. The seal is usually located in an open or closed groove in one of the surfaces. The seal can also be located in a retainer, which eliminates the need for machining a groove. The mating hardware when bolted, torque, clamped or fastened tightly to the surface enclosing the ring, compresses the seal, forming a positive joint

O-Seals are commonly used in the following industries.

• Aerospace
• Nuclear
• Chemical/Plastics
• Vacuum Processing/Research