Flexitallic Gasket Materials

Novus™ and Sigma® Gasket Materials

Henry Gallacher has long been a trusted name in the North East for supplying a comprehensive range of gaskets and gasket materials. We stock a selection of renowned Flexitallic products, including Novus™ 5G compressed fibre, Sigma® PTFE, SF2800 aramid fibre, SF3300 aramid/inorganic fibre, and Flexicarb® graphite laminate.

Our cutting and gasket manufacturing capabilities enable us to transform all Flexitallic materials into a variety of forms, such as flange table gaskets, picture frame gaskets, custom shapes, washers, and seals.

If you need guidance on selecting the most suitable material for your application, please get in touch with the following details. We are committed to offering expert advice to help you make an informed choice.

  • Operating Temperature
  • Operating Pressure
  • Conveyant
  • Gasket Size and Details (For standard flanges, please refer to the flange gasket tables).

Further down this page, you will find a comparison table and chemical resistance chart to assist your decision-making process.

Compressed Fibre Novus™ 5G Gasket Materials

Novus™ 10
Novus™ 10

Carbon-reinforced compressed fibre gasket material features a nitrile rubber binder, making it ideal for demanding high temperature and pressure environments. It offers excellent resistance to steam, oil, fuel, refrigerants, and creep. Maximum Temperature: +425°C. Maximum Pressure: 100 bar.

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Novus™ 30
Novus™ 30

Constructed from a blend of aramid and inorganic fibres with a high-grade rubber binder, Novus™ 30 is well-suited for sealing hot and cold water, steam, oils, fuels, gases, and chemicals. Maximum Temperature: +400°C. Maximum Pressure: 100 bar.

 

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Novus™ 34
Novus™ 34

Featuring a combination of aramid and inorganic fibres with specialised additives, Novus™ 34 is a high-grade sealing material suitable for a broad range of industrial uses. It performs well with oils, solvents, high-pressure steam, and gases. Maximum Temperature: +450°C. Maximum Pressure: 100 bar.

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Novus™ 45
Novus™ 45

Produced from a mix of recycled and virgin synthetic fibres bonded with premium nitrile rubber, Novus™ 45 is commonly used in sealing oils, solvents, gases, water, low-pressure steam, and mild chemicals. Maximum Temperature: +300°C. Maximum Pressure: 60 bar.
 

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Novus™ 49
Novus™ 49

With a high graphite content reinforced by aramid fibres and nitrile rubber binder, Novus™ 49 offers excellent mechanical strength. It is widely used in applications involving oil, solvents, gas, and high-pressure steam. Maximum Temperature: +420°C. Maximum Pressure: 100 bar.

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PTFE Sigma® Gasket Materials

Sigma® 500
Sigma® 500

This biaxially orientated PTFE material incorporates hollow glass fibres and holds FDA and WRAS approvals. It is a preferred choice for food, beverage, pharmaceutical, and chemical industries where low bolt load sealing is required. Maximum Temperature: -250°C to +260°C. Maximum Pressure: 85 bar.

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Sigma® 511
Sigma® 511

Sigma® 511 is a biaxially orientated PTFE sheet filled with silica, approved by WRAS and FDA. It is suitable for sealing harsh acids and chemicals, excluding hydrofluoric acid, alkali metals, fluorine gas, and hydrogen fluoride. Maximum Temperature: -250°C to +260°C. Maximum Pressure: 85 bar.

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Sigma® 533
Sigma® 533

This PTFE base material contains barium sulphate filler and offers high performance across the full pH range, particularly effective with strong alkalis (excluding molten alkali metals, fluorine gas, and anhydrous HF). Maximum Temperature: -250°C to +260°C. Maximum Pressure: 85 bar.
 

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Aramid Fibre Gasket Materials

SF2800 Aramid Fibre Sheet
SF2800 Aramid Fibre

Crafted from a blend of aramid fibres and premium nitrile rubber, SF2800 offers durability and versatility, making it ideal for gasket conversion. It is approved to BS7531 Grade Y and WRAS for potable water applications. Maximum Temperature: -100°C to +225°C. Maximum Pressure: 51 bar.

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SF3300 Aramid/Inorganic Fibre Sheet
SF3300 Aramid/Inorganic Fibre

A high-grade sealing sheet combining aramid and inorganic fibres with nitrile rubber, SF3300 is asbestos-free and suitable for a variety of industrial uses. It meets BS7531 Grade X and WRAS standards. Maximum Temperature: -40°C to +250°C. Maximum Pressure: 51 bar.

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Flexicarb® Graphite Laminate Gasket Materials

RGS3 Flexicarb® Graphite Sheet
RGS3 Graphite Laminate

This high-purity graphite laminate features a tanged stainless steel core, providing excellent blowout resistance and suitability for moderate temperature and pressure conditions. It is robust and durable but not recommended for strong oxidising agents. Maximum Temperature: -200°C to +350°C. Maximum Pressure: 51 bar.

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RGS4 Flexicarb® Graphite Sheet
RGS4 Graphite Laminate

Featuring 98% pure graphite foils reinforced with 0.05mm stainless steel, this laminate offers enhanced durability for demanding applications. It is suitable for gasket conversion and compatible with flat and raised face flanges. Maximum Temperature: 370°C (oxidising), 700°C (inert/reducing). Pressure rating: up to PN100.

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Technical Specification