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Optimum squeezing force for an o ring

It is true that the more squeeze you place on an o ring, the tighter the seal it will provide. In essence, the more squeeze (compression) you apply, the greater the force between the o ring and its mating hardware.  And ensuring you have the perfect seal is all...

O Ring Squeeze

The squeeze and shrinkage on an o ring are vital to understanding as these factors stand in the way of your application either experiencing a perfect seal or your application suffering from leaks.  You can measure the shrinkage of an o ring during...

Keeping your o rings bonded

EMI o rings. Those seal ring gaskets are made of silicone compounds, combining environmental sealing with electromagnetic interference protection.  Consisting of metal or metal-coated particles, silicone o rings are filled with silver, silver aluminium, or nickel...

The importance of mechanical seals when reducing water consumption in mining

Environmental considerations are at the top of most industry's agendas in the 21st century as companies evaluate and improve operations, processes, and systems.  Conserving water in mining is one such area that is now being investigated further with the rotation of...

How choosing the correct gasket reduces risks

Health and Safety across any industry are vital, especially so in industrial facilities and settings.  Why?  Because harmful leaks and emissions must be avoided at all costs to avoid serious accidents or injury to your teams and property.  That’s why having the right...

How to tighten your bolts perfectly

How to tighten your bolts and which tools you should use to achieve the perfect seal is not as seamless and straightforward as we would like. Various factors come into play in these situations, such as bolt grade, size, and even application type.  Tightening torques...

Static and Dynamic o rings

A range of factors and application dynamics come into play when choosing a particular type of o ring.  You need to understand the type of seal exert you require, the dimensions, and even compounds.  Due to the nature of an o ring and its overall design, o rings use...

Gasket Sealants

Fortunately, no one gasket suits a range of applications, but rather we have a multitude of gasket sealants available to meet various specifications and requirements.  Ultimately, sealants are used to effectively ensure gasket seals.  Helping to extend a gasket's life...

Types of industrial gasket material

Different industry sectors will use different types of gaskets and different types of gasket materials.   And of course!  Different industrial gasket materials will be much better suited to some industrial processes and applications compared to others.  As different...

Keeping a close eye on the gaskets your applications use

Gaskets are vital elements to any piping system and application that requires creating the perfect seal in order to prevent leaks.  This is the main role of a gasket, to provide a good seal, with some gasket materials sealing better than others in certain...

Graphite Gaskets and Sheeting Material 

Graphite has become a very popular gasket choice for sealing applications requiring high performance combining excellent chemical resistance with an exceptionally wide temperature range from cryogenic to above +400⁰C and having excellent resistance to stress relaxation at elevated temperatures. 

This exfoliated graphite material is available in purity grades of 95% to 98% and 99.5% for nuclear applications 

There are many different versions within this family of graphite based materials ranging from plain homogenous graphite to being laminated and reinforced with stainless steel, nickel, aluminium and many other metals should such service conditions require. Materials are also available with ‘multi-layers’ offering even greater resistance to higher pressures or with polymeric layer ‘clean’ coating to aid handling. 

  • Outstanding resistance to high and low temperatures 
  • High compressibility 
  • Resistant to virtually all media 
  • High pressure  
  • Unlimited storage life  

Although we have many versions available within the graphite family most applications are covered with four primary options 

Plain Homogenous Graphite 

This material is manufactured from expanded graphite foil without any form of insert or reinforcement. This is available in purity of 98% for standard grades and 99.5% ultrahigh purity for use in applications within the nuclear industry. 

  • Maximum Temperature (oxidising media) +400⁰C 
  • Maximum Temperature (inert/reducing media) +2500⁰C 
  • Minimum Temperature -200⁰C 
  • Low coefficient of friction and excellent residual stress 
  • Very easy to cut 

Nickel Reinforced Graphite 

This is a jointing of 98% purity exfoliated graphite sheet with a reinforced adhesive bonded layer of nickel foil. Recommended for use in general sealing applications.  

  • Maximum Temperature (oxidising media) +400⁰C 
  • Maximum Temperature (inert/reducing media) +1000⁰C 
  • Minimum Temperature -200⁰C 
  • Excellent sealing integrity 
  • Very easy to cut, handle and install 

    Stainless Steel Reinforced Graphite

    This is a jointing of 98% purity exfoliated graphite sheet with a reinforced adhesive bonded layer of flat 316 stainless steel. Recommended for use to seal a wide range of media in both high and low temperature and pressure applications.

     

    • Maximum Temperature (oxidising media) +400⁰C
    • Maximum Temperature (inert/reducing media) +700⁰C
    • Minimum Temperature -200⁰C
    • Excellent sealing integrity
    • Very easy to cut, handle and install
    • High Compressibility
    • Resistant to virtually all media
    • Good leakage properties

    Stainless Steel Tanged Graphite 

    This is a jointing of 98% purity exfoliated graphite sheet with a reinforced mechanically bonded layer of tanged 316 stainless steelThis insert allows the product to be used for applications involving high sealing stresses and requiring high blow-out resistance in industries such as petrochemical and process. 

    • Maximum Temperature (oxidising media) +450⁰C 
    • Maximum Temperature (inert/reducing media) +2500⁰C 
    • Minimum Temperature -200⁰C 
    • Exceptional resistance to blow-out and crushing 
    • Strong composite construction without adhesives 
    • Excellent resistance to steam 
    • Extra strength for ease of handling and installation 
    • High Compressibility 
    • Resistant to virtually all media 
    • Good leakage properties 
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