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Metal Detectable O Rings

Metal detectable o rings became a necessary must when it was identified that some chemicals, exposure to extreme temperatures, and continuous vibrations could cause failings in standard o rings.  Failings that not only mean a breaking of the seal, but there is also an...

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...

What is a Spiral Wound Gasket?

Spiral Wound GasketFor daily purposes, gaskets are merely indispensable. Hence, it makes total sense when one thinks of having a gasket that can withstand variable fluctuations in pressure and temperature. It should also survive in situations such as flange rotation, adequate creep and bold stress relaxation, optimum flexibility and much more. This is where a spiral wound gasket comes in handy. These types of gaskets are usually manufactured in a combination of a pre-formed engineered strip of metal and a filler material; both of which must be alternating each other. In doing so, the design offers an excellent seal at the time of being compressed. In fact, the metal strip has been shaped such that it looks more like a loaded spring and that is a resilient one, under diverse situations.

Meant for multiple purposes

The spiral wound gaskets or SWGs are usually meant to fulfil a number of tasks, particularly in piping systems all over the world. Besides this, their cost is the bare minimum and stands out for extreme durability and flexibility. Another plus factor is that the use of it is not limited to any pressure class. The shape has also been made such to resist blowouts. On account of these and more, the industry has assigned the tag of ‘fire safe’ gasket to this one.

Many however make a mistake of assuming that all spiral wound gaskets are the same, which is not so. It is primarily owing to metal quality, filler quality (like thickness, grade, density), machine-made or not that is capable of controlling pressure and tension on gasket winding; all of which are strong determiners of the differences in the quality of gaskets.

Common styles of gaskets used

Ideally, there are three standard styles of spiral wound gaskets, which are as follows:

  • Style D: This consists of only a sealing element (D), meant for several applications and variable conditions.
  • Style DR: This one has only a sealing element (D) and a centring ring (R), which is more of an external body that centres gasket on a primary flange face and functions as a compression stop.
  • Style DRI: This has a sealing element (D), the centring ring (R) and the inner ring (I), which helps the gasket to stay protected from any form of corrosive substance and high temperature and pressure (usually inward buckling happens for the latter).

Benefits and applications are aplenty

The fact that spiral wound gaskets have been made so rigidly is why stability is supreme. Also, their designs have equipped the gaskets to withstand the extreme level of exhaustion without showing any dip in performance.

For the ideal sealing solutions in heat exchangers, utility holes, boiler hand-holes and flanged joints, this is the type of gasket that one should choose over anything else. The make is such that any form of toxin or corrosion is taken in very well by this gasket.

One can browse through the different companies that stock these items like Specialist Sealing Products and thereby make a right purchase. It is only after using one will come to know the key reasons behind its immense popularity.

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