Graphite Sheet

William Johnston & Company Limited’s range of graphite laminate materials are suitable for use at temperatures from -200°C to +550°, and are suitable to seal against a broad range of media and pressures.

Certified to International standards and manufactured within Europe, this range of graphite laminate products offer unrivalled quality and integrity. When combined with an elastomeric binder they provide the basis of aramid fibre sheet jointing. William Johnston & Company Limited stock, convert and support aramid materials from:

PRODUCT

USAGE

COMPOSITION

Peak Temperature

Peak Pressure

Flexicarb RGS1

General sealing applications and can be used for sealing steam and most chemicals with the exception of strong oxidizing media. It is particularly recommended where ease of gasket cutting is important.
The product is not recommended for sealing against strong chemical oxidising agents.

98% pure graphite foil.
13-micron pure nickel foil.

 

Bond – Adhesive

(Air or Oxidizing Atmosphere) 370°C

(Inert or Reducing Media) 1000 °C

50 Bar

Flexicarb RGS3

Recommended for applications involving high sealing stresses and where high blowout resistance is required. The inclusion of the steel reinforced layer gives rise to a robust sheet. RGS 3 can be used to seal a wide range of media at moderate combinations of temperature and pressure.
The product is not recommended for sealing against strong chemical oxidising agents.

98% pure graphite foil.
0.1mm thick tanged stainless steel UNS S31600.

Bond – Mechanical

(Air or Oxidizing Atmosphere) 370°C

(Inert or Reducing Media) 700 °C

80 Bar

Flexicarb RGS4
 

Can be used to seal a wide range of media at moderate combinations of temperature and pressure.
The product is not recommended for sealing against strong chemical or
oxidising agents.

98% pure graphite foil.
0.05mm thick flat stainless steel UNS S31600

Bond - Adhesive

(Air or Oxidizing Atmosphere) 370°C

(Inert or Reducing Media) 700 °C

50 Bar

Novus FI

Can be used in a wide range
of applications in the chemical and
petrochemical and manufacturing
industries, including pumps,
compressors and pipe joints. It is
commonly used as a back-up sheet
for Novus TI due to the ease of
manual cutting.

98% pure graphite foil.
0.05mm thick flat stainless steel UNS S31600

Bond - Adhesive

(Air or Oxidizing Atmosphere) 400°C

(Inert or Reducing Media) 700 °C

50 Bar

Novus TI

General use throughout industry in pipeline and vessel applications. Its wide temperature range and excellent stress retention make it ideal for steam systems and process duties in the petrochemical and manufacturing
industries.

98% pure graphite foil.
0.1mm thick tanged stainless steel UNS S31600.

Bond – Mechanical

Air or Oxidizing Atmosphere) 400°C

(Inert or Reducing Media) 700 °C

80 Bar

Graphite based sealing materials are great at compensating for minor imperfections on the flange sealing surface. Combining graphite with stainless steel or nickel reinforcement increases the performance. Different styles of reinforcement are available, so please consult with William Johnston and Company Limited to ensure you have the best available material for your application.

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Contact William Johnston & Company Limited

For more information about our Graphite Sheet that are available world wide, contact us on +44 (0)141 620 1666, Email us or simply complete our online Enquiry Form.

Failure to select the correct materials or products can result in damage to plant and equipment and personal injury. In specific applications, particularly where critical conditions exist, we suggest you contact us and we will consider with you the most suitable material or product. However, information supplied by William Johnston & Company Limited is intended only as technical co-operation and as a guide to the various uses of different products. No warranty is given in respect of information or recommendations by William Johnston & Company Limited which are only given for guidance and without any guarantee. The customer must satisfy themselves on the suitability of the material or product for the intended purpose. The correct fitting of products is the responsibility of the customer.

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