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The job of an anti-extrusion ring

O rings perform an essential job supporting various applications. Creating a tight seal between the two housing parts that hold it, o rings help prevent liquids and gases from escaping from an application, preventing any detrimental harm and defects from occurring....

What Gaskets Are Best for High-Pressure Vessels?

When it comes to the choice of gaskets on the market today, it can feel quite overwhelming to know which is the right option to use alongside high-pressure vessels. The pressure in these types of vessels can be extremely dangerous and explosive when they are not...

O-Ring Squeeze Ratios – Everything You Need to Know

If you need to install an O-ring seal, you might be wondering what you need to know about squeeze ratios. Specialist Sealing Products offers a wide range of products for your needs, and we’ll be here to help you when selecting the right design and material for your...

Spiral Wound Gaskets and Their Use in the Power Generation Industry

Within the power generation industry today, there are constant challenges to face. Over the past decades, many changes have occurred in this industry, with different fuels used to produce energy. In order to withstand the high temperatures and the conditions of this...

Shelf life of an o ring

It may seem a surprising topic of conversation, but when it comes to o rings and seals, it's important to note that they do have a shelf life, which, if not monitored and regularly checked, can affect their quality and overall performance.  How and where you store...

What are Encapsulated O-Rings?

When discussing the various o-ring options on offer, you might hear encapsulated o rings being discussed. This type of o-ring offers many advantages to manufacturers, but you’ll want to ensure you understand its proper application before purchasing...

Everything You Need to Know About Large O-Rings

Large O-rings, which are often referred to as giant o-rings, are used in a wide variety of applications. They are primarily needed for jobs where heavy machinery or equipment are used, but you’ll find there are a variety of options on the market when choosing large...

How to Avoid Pipeline Flange Corrosion

Our team is all too aware of the risks of corrosion, but it’s something that you can work to avoid in your home and workplace. Preventing corrosion isn’t always an easy task, which is why it’s such a common problem within buildings in the UK. Visit our homepage for...

O-rings suitable for the pharmaceutical industry

O rings are widely used across various industries to support a variety of different pieces of equipment and applications.  They provide an essential function and are ultimately moulded and manufactured to ensure they provide a continually high level of quality through...

The Best Chemical Resistant Gaskets for Sulfuric Acid

If you are using sulfuric acid on a regular basis within your industry, you might be aware of how corrosive it can be. While it can be useful for dyes, explosives, fertilisers, and many more applications, finding a chemical resistant gasket can often be one of the...

Why Colour Matters When Choosing Gaskets?

Why Colour Matters When Choosing Gaskets?Gasket manufacturers have turned to colour coding gaskets to make the selection and categorisation of the product more accessible 

It is possible to identify the winding and filler materials that were used for fabrication by the colouring of the outer top side of the centre gasket ring; the colour stripes placed at intervals on the outside designate what non-metallic winding filler materials were used 

These not only help to identify and choose products, but they also set an industry standard so that the correct gasket is selected for an application. 

A limited colour selection can no longer satisfy consumers who seek more diversity to match the multitudes of applications. The colours range from standard grey all the way to the most vibrant hues. Thus, it is possible to match the colour of the seals and gaskets to doors and windows where they will hide in plain sight. 

Any queries about the use of gaskets, gasket colours or seal colours, can be expertly answered by the technicians at Specialist Sealing Products. The training and long-term association with seals and gaskets guarantees the staff can swiftly understand any application requirements and solutions 

How a Spiral Wound Gasket Colours Will Look 

The standard used for the fabrication of spiral wound gaskets is called ASME B-16.20. It requires an inner ring to be placed on all PTFE manufactured gaskets in all available classes. 

These colours denote the materials used, the temperatures they have been manufactured to withstand, and will have an abbreviation of the material stamped on the ring. 

When looking at the gasket from a transverse section so that it looks like the rings around the planet Saturn and starting from the innermost centre (otter) ring, there is a stamp with numbers and letters that indicate the materials used to make the gasket. 

Looking at the outer ring, there will be a gasket manufacturer’s stamp with their registered name. This will help anyone looking for a particular brand. 

There are four other stamps on the outer ring that help identify the gasket properties and specs.  

  • Stamps with plain numbers and a letter indicate the material when it is something other than carbon steel. 
  • Stamp that looks the same as the one listed above but with a forward stroke / followed by letters indicates the gasket filler material. 
  • Stamps also have the standard manufacturing rating such as ASME B-16.20. 
  • A stamp with measurements indicates the nominated pipe size and pressure rating.

Find Out More Here!

Gasket Identification Using Colour Guide 

For even better ways of being able to tell the materials used in a gasket, there are colours to guide the buyer. There is sure to be a colour coded chart that will assist in choice, as even seasoned engineers sometimes struggle to remember the properties of the many different colours and what they denote.  

Some gaskets have no colourThis is not deliberate; the defining properties of the gasket will be able to be understood from reading the stamps as demonstrated in the previous section. Staff at Specialist Sealing Products will be on hand to assist any colour or stamp queries.

Read the next article: Spiral wound gasket and sheet gasket

– Reference Video: HardHat Engineer

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