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Flange Gasket materials – What you need to know

Getting the most out of flange gasket materials and ensuring the performance of the gasket is not affected when you come to use it, means several things must be taken into consideration.  For example, factors such as their design, how they’re manufactured, installed,...

Spiral Wound Gaskets and Sheet Gaskets

Gaskets come in a range of different shapes and sizes.  All are offering similar functionality; gaskets are produced using a range of different materials to suit a range and a variety of environmental factors, industrial uses, and product requirements.  When it comes...

Benefits of Kammprofile Gaskets

Used to prevent leakage, gaskets are constructed to fit between a range of different sizes and types of surfaces in order to provide the perfect seal.  Typically used in pipes and heat exchangers, gaskets are widely used as industrial sealants.  Kammprofile gaskets,...

Purpose of a Kammprofile Gasket

The ultimate purpose of a gasket is to stop leaks while being able to deal with varying levels of compression.  When it comes to Kammprofile gaskets, these are ideal for standard pipeline and heat exchanger applications.  As due to their grooved metalcore, with a...

Are your gaskets completely compliant?

In industries where gaskets are not just important but essential, there are numerous challenges to be faced and considerations to take on board.  This is especially true when it comes to making sure this “essential” element is also compliant.  With the implementation...

Everything you need to know about Manway Gaskets

When it comes to manway gaskets, we want to keep things simple, introducing them as the small sealing ring found in hatches/openings that are constructed for large tanks. Openings which give people access to the inside of the aforementioned tanks and vessels. The...

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...

Choosing the Perfect Gasket for Your Needs

The perfect gasket choice and fit is an essential component of engines, appliances, and industrial machinery projects. They are a fundamental part when engineering anything from power tools to oil drills. A high-quality manufacturer of gaskets and seals will use only...

How Do You Recognise a Quality Gasket?

A gasket is a very simple item that is reasonably inexpensive. Considering how gaskets work, you may be facing a costly bill should a gasket fail. Choosing a quality gasket from Specialist Sealing Products helps to create a seal that will last until well after the...

5 Common Gasket Failures

When it comes to manway gaskets, we want to keep things simple, introducing them as the small sealing ring found in hatches/openings that are constructed for large tanks. Openings which give people access to the inside of the aforementioned tanks and vessels. The...

Compressed Non-Asbestos Fibre Material (CNAF) 

This range of products have been designed and manufactured to replace the now extinct and banned range of Asbestos based gasket materials. 

Manufactured from a mixture of organic fibres and rubber binders, with fillers based on synthetic fibres, mineral fibres, carbon, aramid and glass fibres this range of sheeting products offer great versatility thanks to their highly flexible chemical and physical properties ensuring sealing of maximum reliability and durability even in critical sealing applications. 

There are 3 main sub categories of CNAF materials each category having several different versions using a blend of different fibres and fillers to meet varying service conditions to seal media at a range of temperatures and pressures. 

This range of products are available from stock as cut gaskets or in sheet form up to 2 metre x 1.5 metre and in a range of thicknesses up to 3 mm as standard 

Grade X

Superior performance CNAF sheet jointing with excellent mechanical properties and good chemical and temperature resistance. The manufacturing compounds are based on Glass, Inorganic and Aramid Fibres bound with high quality Nitrile NBR binder meeting the requirements of BS7531 Grade X. 

  • WRAS / WRC Approved for use in hot and cold potable water 
  • API 6FB Fire-Safe 
  • TA-Luft (clean air) in accordance with VDI guideline 2440 
  • Temperature from –200⁰C up to 400⁰C 
  • Maximum Pressure up to 120 bar 
  • Excellent resistance to solvents, refrigerants, water and steam 
  • Media compatibility with oils, fuels, solvents, and hydrocarbon compounds 
  • Suitable for use with Oxygen Service 

Grade Y 

High quality CNAF sheet jointing specifically developed to meet the requirements of BS 7531 Grade Y. 

These have compressed aramid fibres with a combination of other functional fillers bound with a high quality nitrile rubber and are suitable for use across a broad range of industrial sealing applications.  

  • WRAS / WRC Approved for use in potable water 
  • Fire-Safe 
  • TA-Luft (clean air) in accordance with VDI guideline 2440 
  • Temperature from -200⁰C up to 450⁰C 
  • Maximum Pressure up to 140 bar 
  • Resistance to solvents, refrigerants, water and steam 
  • Media compatibility with oils, fuels, and hydrocarbon compounds 
  • Suitable for use with Oxygen Service 

General Service Grade 

A cost effective grade of CNAF sheet jointing based on a mixture and blend of fibres bound with a nitrile rubber binder. Suitable for general use including oils, hydrocarbon compounds and low pressure steam and water 

  • Temperature from –100⁰C up to 250⁰C 
  • Maximum Pressure up to 50 bar 
  • Resistance to solvents, refrigerants, water and steam 
  • Media compatibility with oils, fuels, and hydrocarbon compounds 

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