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Dobson Gaskets is a leading UK manufacturer of gaskets and sealing products

Call Us Now

+44 (0) 1535 607257


E Dobson and Co [Gaskets] Ltd
Unit 1
Holme Mill Ind Estate
Fell Lane
West Yorkshire
BD22 6BN

Call Us Now

+44 (0) 1535 607257

Call Us Now

+44 (0) 1535 607257

Opening times

Mon - Thur 8.00 - 17.00
Fri 8.00 - 16.00

A High Temp Gasket Material

High Temp Gasket Material

We manufacture gaskets from specialist materials for applications with continuous temperatures exceeding +500 °C. These include materials fabricated using mica crystals, a naturally occurring silicate with excellent resistance to high temperature. Pure mica can be combined with other materials, such as a tanged steel core, to improve performance under specific operating conditions.

We hold a large stock of high temperature gasket materials or can source and supply specialist sheets and fillers. Please contact our helpful technical team to discuss your specific requirements.

Firefly Non-asbestos Mill Board

Firefly Non-asbestos Mill Board

We manufacture gaskets from Firefly Millboard FF700, FF800 and FF900 grades. The non-asbestos fibre millboard sheets are suitable for a wide range of high temperature applications.

Thermiculite Material

Thermiculite Material

Thermiculite is supplied as a sheet material or a filler compound. Thermiculite 815® is a high temperature sheet material reinforced with stainless steel tanged core.

Micatherm Material

Micatherm Material

Manufactured by FMI, Micatherm and FM-High materials are available in sheet and filler form for use across critical applications up to 1000 °C

Superwool (Ceramic Paper)

Superwool (Ceramic Paper)

Commonly used as a cost-effective option for high temperature gaskets, Superwool is resistant to chemical attack and can withstand temperatures up to 1300°C.

The Manufacture of High Temp Gasket Materials 

Dobson’s manufacture a range of high-temperature gaskets from non-asbestos and fibre and materials that in many cases are reinforced with metal composites and supplied with anti-corrrosion and oxidisation inhibitors. All gaskets are precision cut in-house using state-of-the-art machinery, such as CAM cutting tables, water jetting and punch presses.

We offer clients a full turnkey service, including materials specification, CAD design and prototyping. We apply the same attention to detail whether producing small or large runs gaskets and all gaskets are manufactured to the required national and international standards.

Typical features

  • Operation temperature range: +500 °C to 2300°C.
  • Good tensile strength and torque retention
  • Low thermal conductivity
  • High thermal insulating performance
  • Low heat storage

The Manufacturing Proccess Of A High Temp Material Gasket

High Temp Gasket Materials

We supply a range of gaskets capable of handling temperatures and pressures beyond the range of most standard gasket materials. These specialist sheet materials and fillers are stable under the harshest fluctuating conditions involving combustible fluids, fire, steam and exhaust emissions.

We have listed below an overview of the materials we hold in stock and their standard operating conditions. As one of the UK’s largest sheet material distributors we can also source and cost-effectively supply a full range of other high temp materials. Please get in touch for more information.

Materials Temperature Range Max PSI/BAR Download
 Micatherm  900 °C  60 bar Micatherm datasheet
 Firefly  1000 °C  n/a  
 Thermiculite  1050 °C  200 bar Thermiculite datasheet
 Superwool  1010 °C  n/a Superwool datasheet
 Ceramic paper  1100 °C  n/a  

Talk to a Technician

Our highly experienced technicians can advise you on the best sheet materials and manufacturing processes for a wide range of gasket applications.

CALL: +44 (0) 1535 607257

Materials Applications And Uses

Sealing against high temp medias such as steam and exhaust emissions requires a rigid material impervious to thermal degradation over fluctuating  conditions. Mica and non-asbestos fibre gaskets are typically used in these types of applications, particularly where oxygen is present and standard higher temperature materials such a graphite will fail.

  • Exhausts and Chimneys
  • Steam boiler processes
  • Refineries
  • Fire protection
  • Power generation
  • Chemical processing
  • Hydrocarbon processing

Gasket Sheet Materials

We supply a vast range of gasket materials, available to buy directly or order from us. For more information visit the Gasket Sheet Materials page

  • PTFE Gasket Sheet
  • Rubber Gasket Sheet
  • Spiral Wound Gasket Sheet
  • Teflon Gasket Sheet
  • Viton Gasket Sheet
  • Graphite Gasket Sheet
  • Novus Gasket Sheet
  • Flexitallic Gasket Sheet
  • Closed Cell Foam Gasket Sheet
  • Neoprene Foam Gasket Sheet
  • Sponge Gasket Sheet
  • Durlon Gasket Sheet
  • Grafoil Gasket Sheet
  • Paper Gasket Sheet
  • High Temperature Gasket Sheet
  • Head Gasket Material Sheet
  • Exhaust Gasket Sheet
  • Fiber Gasket Sheet