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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...

Rubber Gaskets and Sheeting Materials

We are able to supply all the following products in sheet, strip, sponge, tube, bar, cord or cut gasket form generally in thicknesses up to 25 mm. An adhesive backing may also be applied to ease handling and installation 

There are variants of each grade that meet different specifications and International Standards to suit all critical and non-critical sealing applications. A general overview of each material category is detailed below;    

    Commercial (SBR) Grade – There are a number of SBR material compounds offered as a very cost effective commercial grade rubber. They have high wear characteristics and good low temperature flexibility, low compression set and high elasticity. They are resistant to temperatures between -20⁰C and +90⁰C and even resistant to acids and salts however, they are not suitable for applications involving chemicals, ozone, strong acids, oils and most hydrocarbons. These compounds are also only available from 60 to 80 Shore A, do not meet any recognised International standards and are not available as a Food quality grade.  

    EPDM – Has excellent resistance to ageing, temperature, weathering, ozone, steam and many chemicals. It has high and low temperature stability as well as steam and water resistance. It has a temperature range of -25⁰C to +100⁰C and has a good resistance to glycol-ether hydraulic fuels but is not suitable for contact with petroleum liquids. It is widely used for flange gaskets. Available from 50 to 80 Shore A compounds can also be manufactured to meet critical applications and Water supply industry approvals. 

    Natural – A good level of physical properties with excellent load bearing and wear resistance characteristics, compounded to produce high resilience, good tensile strength and low compression set over a wide range of hardness. A temperature range of -50⁰C to +90⁰C natural rubber also has good resistance to acids and salts but is not recommended for use in contact with oils and hydrocarbons. This product is often used in the construction and engineering fields. Also available to meet critical specifications and Food Quality approvals lends itself to a wide range of applications within the Food, Beverages, Pharmaceutical and cosmetics industries. 

    Neoprene  Also known as Chloroprene this is an excellent sealing material with good wear characteristics and good flame resistant properties. It has more resistance than natural rubber to sunlight, ozone and oxidation. It has good resistance to heat and does not soften under severe exposure. It has moderate oil resistance but is not suitable for use with petrol. Commercial grades range from 40 to 80 Shore A and offer a good level of physical properties such as Tensile Strength and Compression Set. For more critical applications there are a number of different products available to meet various specifications and standards commonly offering enhanced flame resistance, water resistance or ozone resistance.  

    Nitrile – Temperature range -20⁰C to +100⁰C. Having excellent oil and chemical resistance and good mechanical performance at reasonably high temperatures this compound is widely used in applications where hydrocarbons, chemicals and acids are present. It does not, however, possess good resistance to ozone, sunlight or weather. Commercial nitrile rubber is available from 40 to 90 Shore A and has good tensile strength and compression set. Food quality Nitrile rubber is also available making it suitable for the Food, Beverages, pharmaceutical and cosmetics industries. 

    Higher quality nitrile compounds are formulated to meet international standards and specifications within the Aerospace and critical engineering sectors having enhanced oil and chemical resistance. These compounds can be further modified to improve long term resistance to heat, oils and chemicals by chemical processes involving hydrogenation, creating hydrogenated Nitrile Butadiene Rubber (HNBR)   

    Silicone  Available in various forms and grades to meet specific application requirements Silicone has many unique performance characteristics including low thermal conductivity, thermal stability, low chemical reactivity and toxicity, doesn’t support microbiological growth, is electrically insulating and has high gas permeability. It has very good resistance to sunlight, ozone, oxygen and gases and has a temperature range of -60⁰C to +220⁰C. However, it has poor tensile strength, tear, abrasion and steam resistance 

    This family of products, having such important characteristics, makes it exceptionally useful in applications within the Aerospace industry requiring such dimensional stability and chemical resistance, in the electronics industry where electrical insulation is essential and the food, drink and medical industry where the microbial properties are necessary.  

    Viton – This is a family of synthetic rubber compounds with a general temperature range of -20⁰C up to 250⁰C and is recognised for its exceptional chemical resistance at elevated temperatures. It is a high quality fluorine containing rubber and is widely used in applications including chemicals, mineral and synthetic oils, greases, lubricants, fuels, acids and alkalis. Viton also has a high specific gravity and is elastic, durable and shock resistant. The mechanical properties are also largely maintained at elevated temperatures. 

    Of this family group of products lives Viton A, a seal and gasket material developed to perform in applications with aggressive hydrocarbons and high temperatures, low temperatures and generally very extreme conditions. This range of compounds has been refined to enhance resistance against specific chemicals to support longer working life in environments exposing highly corrosive chemicals such as Toluene and Methanol and to sustain extreme temperature and explosive conditions making it suitable for Aerospace and Petrochemical applications 

    Other Rubber Products  Include Hypalon, Butyl, Polyurethane, Fluorosilicone and specially developed compounds and coatings for the Aerospace, defence, chemical, medical and food industries where exceptional performance characteristics in areas of potentially extreme temperature, low gas permeability and wear resistance are required. 

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