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O-rings and gaskets are both sealing parts, but they work in different ways. An O-ring is a small, round rubber ring with a circular cross-section. It sits inside a groove and seals when it is squeezed between two parts. Because it can handle pressure very well, it is often used in pumps, valves, hydraulic systems, and machines where liquids or gases move under pressure. O-rings are usually made from materials like nitrile, silicone, or Viton.

A gasket is usually flat and can come in different shapes and sizes. It is placed between two flat surfaces to stop leaks. Gaskets are made from many types of materials such as metal, rubber sheets, PTFE, graphite, or fiber. They are used in engines, pipelines, flanges, boilers, and many other industrial systems. Gaskets work well when you need to seal a large or uneven surface, or when the temperature is high.

In simple terms, an O-ring is best for round grooves and pressure sealing, while a gasket is better for larger, flat surfaces that need a tight seal.

For people looking for sealing solutions or components, many companies in the industry offer such products. Businesses like Vrushabh Engineering, Garlock Sealing Technologies, Flexitallic, and James Walker are some real names in the sealing and gasket sector.

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Asha Prajapati

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3d ago

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Continue Learning about Engineering

What does an o-ring do in a space shuttle?

The same it always do - provides a seal between two surfaces.


Who invented the O-ring?

The O-ring was invented by Niels Christensen (1865-1952); a Danish-American inventor.


What is the difference between SAE and NPT?

NPT is a standard for threaded pipe and fittings. NPT stands for national pipe thread. NPT fittings are tapered thread fitting and usually rely on mechanical deformation in between the male and female fittings to create a seal in addition with teflon tape. Over tighteting may result in a leakage SAE O-ring fittings are straight fittings and rely on the O-ring to create the seal rather than deformation as in NPT fittings. Since these fittings do not depend on deformation chances of a broken fitting are virtually eliminated.


What is a plumbing o ring?

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