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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...

High-temperatures and O Rings, what you need to know

Fluctuations in temperature and indeed heat is a significant factor across many applications that make use of o rings.  However, what is well known is how destructive heat can be when it comes to compound deterioration.  You are making choosing the ideal o ring...

How to restore your damaged rubber seals

Under the right circumstances and having the right tools to hand, you can restore rubber gasket seals and have them working as good as new in no time.  Rubber gasket seals provide a seal between two separate mechanisms, providing airtight seals to keep liquids and...

The importance of backup rings to O rings

Backup rings are ultimately used to help stop o ring migration, and they achieve this in both static and dynamic fluid power applications as the pressure cycles occur, preventing the extrusion of an o ring in the gap.  Ultimately a backup ring is a rigid ring that...

Gasket manufacturing process explained

Specialist Sealing Products have been providing high-quality gaskets to customers throughout the UK for many years. We pride ourselves in the range of gaskets we have available, suitable for a variety of applications across a range of industries.  Rubber gaskets are...

Designing seals for the food industry

There’s a number of factors to take into consideration when designing seals for the food industry. That’s because seals used within this sector need to work exceptionally hard in all food processing environments where hygiene and health and safety are of the utmost...

Storing your gaskets!

A strange headline for a gasket article, we know.  However, it’s an important area and one, which in this sector is often overlooked.  When we think about most products or items in and around our homes and business, we will recognise that most come with manufacturing...

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.

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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