Gaskets

What are they?

A gasket, also known as a static seal, is a seal between two flat static mating components to prevent leakage and ingress of dust particles, water, oils, chemicals and more from or into the joined components while under compression. Gaskets are available in different shapes and sizes depending on their purpose and so they can fit the design and bolt spacing of the component.

What are they made of?

Gaskets are produced from a variety of materials depending on the application it is being used for. The material of the gasket is chosen for their capability to withstand several environments such as extreme temperatures and pressure, resistance to chemicals etc. Materials include but not limited to are copper, cork, foam, graphite, metal, paper, rubber, silicone, composite materials etc.

What are they used for?

The flexibility of the different applications gaskets can be used for means that there is a comprehensive list of purposes due to its functionality. One of the main purposes of a gasket is to create a seal between two mating components along with preventing leaks, withstanding pressure, distributing heat, anti-vibration, noise and sound reduction, preventing friction, insulation etc. Gaskets can also be used for packaging and hygiene purposes.

Where are they used?

Gaskets are everywhere and are used in nearly all industries such as automotive, industrial, medical, food and beverage, water and gas, construction etc. They are everywhere in our day-to-day life such as the door seal of the oven to maintain the correct temperature inside when the door is closed, the door seal around a car door to keep warmth in and keeping rain, dust and dirt out when the door is shut.

How do they work?

For a gasket to function to its optimum, it must be compressed sufficiently to create a seal round the entire component surface. For example, a head gasket must have the bolts torqued in a certain sequence to ensure the gasket is compressed evenly over the whole head, if incorrect torque settings are used or the bolts are not done in the correct sequence, the gasket could start to deteriorate causing irreversible damage to other engine parts. A new gasket should be used anytime equipment is taken apart and reassembled, when a gasket is damaged in anyway or when signs of deuteration start to show.