Have you ever dealt with applications that require jacketed (or sometimes called double jacketed) gaskets? While the technology may not be as commonly used as others, it is one that definitely has its place in the sealing world.
In today’s post, we’re going to address what they are, as well as why and where you would use one.
What is a jacketed gasket? – A jacketed gasket has a construction composed of a soft filler material, wrapped by a metal outer layer. Often, this is a two-piece metal construction with a flat layer against the soft facing and a wrap layer that wraps at both sides to form a complete enclosure to encapsulate the filler.
Why would I need a jacketed gasket? – High pressure/high temperature applications often need a rigid shield to resist blowout. Also, the jacketing feature protects the core layer from the conditions.
Where would I use a jacketed gasket? – These gaskets are used in high pressure and high temperature applications where flange areas are limited, but a rigid construction is needed. They are also used in high load exhaust applications, heat exchangers, and pipe flange gasket connections.
Does material selection matter? – Of course it does! The metal layer must be chosen for the environment, with stainless being preferred. Also, the filler material can come from a variety of choices. Often a tanged core graphite or fiber layer is chosen for it’s compressibility yet rigidity in handling and durability for long-term performance.
Meeting Your Needs
It is important to continue to educate yourself on the various gasket technologies available in order to make the smartest choice for your particular needs. As always, your trusted gasket material supplier(s) will often be a great resource for you when it comes time to narrow down your choices. Understanding jacketed gaskets and the applications that they are suited for will make it that much easier to make your decision.
How often do you work with jacketed gaskets?