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Tips for best o ring maintenance

If o rings are not maintained, leaks can occur, and water and other fluids can enter the appliance or application, and even product in the mix!  If this happens, damage can occur to internal parts and mechanisms, causing deployment failings, potential false readings,...

What you need to know about O Ring Lubricants

Silicone grease and lubricants aren’t just a nice to have for o rings, but they can quite often be a must-have.  However, with so many greases and lubricants to choose from, it can often be a minefield choosing the best ones and the right ones for your o ring and...

O Ring Replacement

Replacing an O Ring in pressure washer wands is probably one of the most common replacements you'll find when working with seals.  Unfortunately, O Rings don't last forever, and over time they do deteriorate, and you will require an O Ring replacement.  It's important...

Reasons behind seal failure and a look into seal replacement

Unfortunately, there are occasions where O-rings, in particular, fail.  The failure of these seals is not simply due to one factor, but various factors that can occur across a range of applications – hence why locating the exact cause of such problems is just that, a...

Gaskets and seals for Aerospace

Gaskets and seals used for aerospace applications and equipment must be of premium quality and to a substantially high standard.  They are used across a range of applications such as radars, antennas, lighting, access panels, electrical conductivity, pressure sealing,...

Finding the best sealing materials for Food Grade Applications

You will find rubber seals across various industries, providing an important element and operating as a vital fixing across a wide range of different applications and equipment.  However, these FDA gaskets must follow strict, set guidelines, in terms of their material...

The Evolution of Gasket Solutions

When we talk about gaskets and the history of a gasket, we must start at the very beginning.  What is a gasket?  Ultimately, a gasket is a manufactured seal that is used to fill the gap/space between two or more surfaces.  Gaskets are typically manufactured by cutting...

How to preserve your gasket

Gaskets and seals don’t last forever. However, they are designed, or they should be, last for a considerable period.  In this sense, it is vital to look at ways to preserve your gaskets in order to avoid any application downtime.  Downtime that involves additional...

Important Design Features of Rubber Sealings

When it comes to designing the perfect rubber sealing, there are a few design features to bear in mind to help achieve the optimum solution.  In this post, we explore these rubber sealing features further and provide information on the benefits and best uses for these...

Optimal Squeeze for an O Ring to be effective

A doughnut-shaped seal that is primarily used to stop liquids and air from escaping or getting into specific spaces is the function and role of an O Ring.  Also known as a mechanical gasket, O rings are designed to fit between a groove and a compression during the...

Kinds of Spiral Wound Gaskets

Different kinds of gasktetsSpiral wound gaskets are made from winding the strips of metal as well as filler material. The winding material and filler are changed according to the needs of chemical characteristics and compatibility. Spiral wound gaskets are mainly divided according to the materials used in them. There are different kinds of spiral wound gasket material that you may come across. Go through following details to explore what each one of those has got:

What are the Different Kinds of Spiral Wound Gaskets

Metallic gaskets

These are made from the different combinations of metal in specific size and shape. Lens rings gaskets and ring joints gaskets are the ones that usually fall under this type. These are more suitable for high temperature and extreme pressure applications. To seal them, they need high bolt load that facilitates sufficient deformation. Metallic gaskets have a tremendous ability to handle sudden fluctuations in pressure and temperature. It can withstand the pressure limit of up to 10,000 psi, but it also means that there will be hardly any compression. The bolt force creates an extreme pressure on seal interface that allows the gasket metal to flow into the flange material structure thereby producing a tight seal.

The common problem that metallic gaskets face is that they are highly susceptible to the galvanic corrosion. However, this issue can be overcome by keeping gasket material very close to the flange material.

Semi-metallic gaskets

These kinds of gaskets play an important role to curtail the gap between metallic gaskets and non-metallic gaskets. These are mainly manufactured from the metallic and non-metallic material as a result of that they possess features of both the materials. The metallic part gives sealability, while the non-metallic portion offers resilience and strength. Semi-metallic gaskets are manufactured to tolerate any form of the condition that involves extreme pressure and high temperature.

The winding material selection is made by fluid concentration, cost of the material, corrosive nature and operating temperature. Stainless steel 321, 316 and 304 is a frequently used material for winding. In some of the cases, alternative materials can be used. Graphite and asbestos are also used as general filler material, but in extreme temperature conditions, graphite is a most preferred choice. Gaskets feature outer ring manufactured from the carbon steel material to achieve precise positioning. In case of exceptional applications, they also come with the inner ring. To produce best results, the process fluid and ring material must be compatible with each other.

Non-metallic gaskets

These are manufactured from the materials which are easy to compress such as silicone, PTFE, graphite, NBR, etc. They can resist the corrosion but only up to the limited temperature. Non-metallic gaskets have many restrictions when it comes to the high-pressure conditions. Flat ring gasket form can be used with raised face flanges, while full face gasket is easy to go with flat face flanges.
The difference between the kinds of spiral wound gaskets mentioned above will definitely help you to pick a right type of gasket according to your requirement. So go ahead, make an informed decision and order your chosen gasket here.

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