Metal Seal Profiles

At Gallagher, we often receive unique requests for challenging projects, and customers who might be intimately familiar with elastomeric seals might have a better fit utilizing metal seals for their application. But, why might someone use a metal seal?

What is a metal seal and how are they used?

A metal seal is used when the application conditions are outside the specification limits of a polymer; extreme heat, extreme cold, extreme pressure, or a vacuum may be too excessive for typical rubbers or elastomers and demand a metal seal. With significant resilience coupled with the right material selection/coating for an application, a metal seal can be a very durable seal performing dependably year after year.

In order to understand metal seals a bit better, GFS thought it might be worthwhile to discuss metal seal terminology, and different profiles.

This is a short guide to reference common terms and profiles that may to new to end-users.

In this blog post, we will discuss the following:

• Common terms of metal seals
• Standard formed metal seals
  • O-rings
  • C-Rings
  • Spring energized C-Rings
  • U-Rings
  • E-Rings
  • Metal Wire Rings
  • Axial C-Seal
  • Boss Seal

Common Metal Sealing Terms