Before we talk about Flange Gasket and other types, let’s get to know about “what is a gasket?” Well, I am afraid to say – giving a proper definition to gasket is not easy. “A gasket is a mechanical seal which fills the space between two or more mating surfaces, generally to prevent leakage from or into the joined objects while under compression.” Well, it’s a reasonable definition given in Wikipedia. Most gaskets are made of a flexible material that will fill the irregularities between two joining surfaces such as two pipelines. Well, Flange Gasket types that are made of metals and composite materials are suitable for high-temperature and high-pressure applications.
Classification of gaskets
Well, we can classify gaskets in many ways. For example; by function, application, and materials. Sealing, sound and noise reduction, anti-vibration, hygiene, and packaging are the most common applications of Flange Gasket and other gasket types. Gaskets are everywhere from electrical transformers to planes. In water, oil, and gas industries; the Flange Gasket is the most widely used gasket type. The “sealing ability” is the best-known property of a gasket. Gases and liquids can leak through even a tiny gap. Which means you need something to prevent leakage of gases and liquids. Rubber is a material, which you can deform to fill the gaps. Anyway, rubber has limitations when it comes temperature and pressure resistance.
Properties of Flange Gasket and other types
Well, I am not going to talk about each type. Sealability, temperature resistance, ability to withstand loads (compressive,) and ability to change the shape are the expected properties of gasket types. Nitrile rubber, paper, metal, neoprene, silicone, fiberglass, plastic polymer, cork, polytetrafluoroethylene, and cork are the materials used for manufacturing of different gasket types.
Flange Gasket and other types design
sheet, solid material, spiral-wound, kammprofile, double-jacketed fishbone, flange, and constant seating stress gaskets are the well-known gasket designs. Well, we should talk about gasket failure as well. A gasket will not serve you for a lifetime. Under constant pressure and temperature, a gasket can get damaged in many ways. The material, environmental conditions, and type are the factors that determine the lifetime of a Flange Gasket (and other types.) For example, a paper gasket will not serve you long when it is used for an outside application.
Human errors when installing gaskets is a thing to take seriously. Well, we are not robots, and we tend to make mistakes under general conditions. For example, fixing a flange gasket by tightening bolts. Uneven pressure on a Flange Gasket can cause sudden failure. Choosing the wrong type of gasket is another common reason for failure. For example, using a rubber gasket for a high-temperature application. Most rubber gasket types can’t withstand high-temperature and pressure. Well, according to Wikipedia, unevenly distributed pressing force; surface not smooth, and stress relaxation and torque loss are the common reasons for gasket failure.
Some final words
Many Flange Gasket and other types are there for commercial and industrial applications. Mistakes made by humans is a common cause of gasket failure. Each gasket type comes with unique properties and advantages/disadvantages. If you are not sure about the gasket type that you should install; get advice from a professional in the industry.