Thermiculite® is a high-performance sealing material engineered for extreme temperature and chemically aggressive applications. Comprising exfoliated vermiculite reinforced with advanced materials such as tanged stainless steel or synthetic fibres, it delivers exceptional durability, oxidation resistance, and sealing integrity.
This material is ideal for use in high-pressure steam systems, strong oxidising environments, and high-temperature gas and exhaust applications. With a maximum service temperature of 1050°C and a broad pH range of 0 to 14, Thermiculite® ensures reliable performance in the most demanding industrial conditions.
Available in various sheet sizes, thicknesses, and flexible gasket forms to suit specific sealing requirements.*
*Please see the datasheet for full details.
Types of Thermiculite
With such a wide range of stocked materials, see below for an overview of each material and click on the link for more information.
Thermiculite 815
High-temperature, chemically resistant
sheet sealing material comprising exfoliated
vermiculite reinforced with stainless steel.
Thermiculite 894
Recommended for large diameter
flanges, high-temperature reactors,
and pressure vessels.
Thermiculite 715
Made from chemically and thermally exfoliated
vermiculite, reinforced with aramid and
synthetic fibres, and bound with premium
nitrile rubber.
As with all types of fibrous sheeting, it is recommended that the type is tested for suitability as grades do vary.
We are happy to advise on any application, but final responsibility lies with the customer.
Thermiculite FAQs
Contact Us
Telephone : +44 (0)1625 573971
Out of hours number: +44 (0)7479778989
Email: sales@epdm.co.uk