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Choosing the correct oil seal application

Choosing and using the proper sealing devices within oil and gas applications can be vital when preventing dirt, dust, water, and other debris from potentially getting inside and contaminating products.  Of course, all rubber materials and seals will provide a range...

Nitrile rubber, NBR, and Buna-N – how well do you know your o ring materials?

A widely used elastomer, Nitrile, Buna-N, or NBR rubber, are all oil and fuel resistant and provide a great level of strength, making them a popular material for seals across various industries.  Suitable for a range of applications, this versatile rubber material,...

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

Types of industrial gasket materialDifferent 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 tolerance levels, levels of resistance and more come into effect. 

This post looks at different types of gasket materials and some specific sectors they are used in. 

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Types of gasket material 

Graphite – now found to be an affordable option for various industries, graphite sheet gaskets perform well in extreme temperatures and chemical services. Some graphite gaskets also come with anti-stick coatings helping in easy gasket removal and cleaner flanges. 

Expanded PTFE – used to seal flanges with minimal torque loads. Soft and conformable PTFE is ideal for glass-lined pipe flanges, making them suitable for most chemical applications and processes within the food and beverage industry. 

PTFE – often cut from sheet PTFE, this material has endless benefits for applications. With outstanding insulation capabilities and a chemically inert material, PTFE also provides endurance in high-temperature applications. 

Non-asbestos – ideal for steam, oil, and water sealing. 

Rubber sheet – this is the most common type of gasket and is available in numerous styles. The most common is nitrile, neoprene, EPDM, and SBR.  One of rubber’s biggest benefits is that it is quick to return to its original form once stress or load is removed. 

Metal gaskets – manufactured from rugged metal components and controlled PTFE or graphite density. Depending on the application’s requirements and specifications, metals come in soft, hard, and semi-soft materials. 

To check out the range of sealants to accompany your gasket of choice, make sure to check out our post on Gasket Sealants to find out more. 

Gaskets and industry 

Automotive 

The gasket material of choice here is silicone. 

Materials that are oil and fuel resistant are required in this sector so manufacturers will make use of materials such as Nitrile and Viton, and EPDM. 

In, vehicle engines you will find graphite and non-asbestos gaskets to be most suitable as they are resistant to fuels and oil and perform well under high temperatures. 

Oil and gas 

Spiral wound gaskets are the most popular choice in this sector, including ring type joints, cam profile gaskets, and those manufactured using non-asbestos materials. 

Sealing materials in this sector must be suitable for high temperature and high-pressure environments.  

As such, manufacturers can also opt for composite materials such as graphite. 

Food processing 

Taste and taint-free products must be available for use in this sector. This is why you will find most applications using silicone gaskets, suitable to withstand high temperatures and prevent bacterial growth. 

When operating in steam and high-pressure environments, Non-asbestos and graphite materials will also be suitable for steam applications and EPDM for water applications. 

Drinking water/water 

Those with good UV resistance will be best utilised in these sectors. Meaning materials such as EPDM, neoprene, and non-asbestos material gaskets will fit the bill perfectly. 

Pumping 

EPDM and neoprene are most commonly used for pipe gaskets. However, for those processes requiring corrosion-resistant materials, gasket manufacturers in the UK opt for nitrile, Viton, PTFE, and non-asbestos to be more than suitable. 

Aerospace 

This industry uses a wide variety of gasket materials; however, most will need to be accompanied by quality and compliance certification. Certification includes a certificate of conformity, allowing full traceability on all gaskets in use. 

Rail 

Approval on gasket materials for use in this sector is required, with materials such as silicone, EPDM, and nitrile often the materials of choice. 

Those that require sealability against fuel, oil, and water will opt for manway gaskets in Viton, EPDM, and non-asbestos materials. 

Petrochemical 

Flange gaskets made from non-asbestos materials are those found in the petrochemical industry. 

For those operating under high-pressure conditions, spiral wound gaskets will be used. 

Quality and safety are the top leading priorities in this sector; hence, those fuel, oil, and corrosion-resistant materials are key. 

Materials such as nitrile, Viton, silicone, and PTFE gaskets in this industry should be high quality to ensure an effective seal with PTFE offering excellent chemical resistance. 

Pharmaceutical 

Silicone rubber is the preferred choice in this sector; however, flange gasket PTFE seals are used as a low bacteria growth and clean liner to pipe gaskets. 

Gasket manufacturers offering expanded PTFE help provide a sealing solution for uneven flanges and those subject to harsh chemicals. 

At Specialist Sealing Products, we offer high-quality gaskets in a range of types, styles, and sizes, as well as various materials to suit all requirements and specifications. 

Check our stock online or call us on 01535 274 776

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Reference video: Technical Piping

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