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Why Should You Invest in Quality Seals?

While industrial seals might seem like something you could save a little money on, this is one part that we don’t recommend cutting costs on. A quality seal will offer many benefits to your business and operations, so it’s worth taking the time to find a solution...

All you need to know about Neoprene O rings

Popular in the refrigeration industry, neoprene o rings are also growing in popularity across a wide range of other sectors due to their incredible resistance to hazardous materials. Also known as chloroquine o rings, these o rings provide excellent resistance to...

Why all sealants are not the same

It's important to understand just how critical it is to use the correct type of sealant. It's especially the case when working with heavy machinery or any industrial situation. You don't want to have to worry about whether your sealing products are working correctly...

How to understand O-rings and their design

O-Rings are a critical component for the proper sealing of specific pipes. They have to sit within a specified groove, which can vary based on the hardware used. That's why it's important to note the various types of o-ring groove design to understand better what kind...

The importance of gasket thickness

Choosing the right gasket material for specific applications is vital. However, gasket thickness is also a feature that must not be overlooked in the decision-making process. Choosing the right gasket thickness can help when you’re experiencing challenges with...

How Temperature Impacts Gasket Performance

When using a spiral wound gasket, there are many things you need to keep in mind. The most common issue we hear people discuss regarding gasket performance issues at high temperatures. If you are using a gasket for the first time at a new temperature and notice it...

How Thick Should Gasket Paper Be?

When creating gaskets, one of the most common questions we receive is regarding gasket paper thickness. You’ll find there are various options on the market, which come in different sizes and thicknesses. Today we’re going to discover what gasket paper is and how you...

O-Rings for the Beer Industry

O-rings offer a wide range of applications, and many people aren’t aware of just how versatile an o-ring can be. When working with o-ring suppliers in the UK, you’ll soon find out that we supply these to a range of businesses, including to breweries. Today we’re going...

Gasket Safety

Gaskets and seals are vital components for applications requiring a solid seal, helping prevent leaks and stop gases and other chemicals from escaping.  However, over time, and due to the fluctuating temperatures, compression sets, and exposure to chemicals, seals do...

Is fluorosilicone rubber o rings a sustainable choice?

Fluorosilicone rubber, also known as FVQM or MFQ, contains 23-28% fluorine and has nearly the same physical and mechanical properties as standard silicone rubber as matches on par with their flexibility at low temperatures.  However, due to its fluorine...

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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