For applications where chemical resistance is paramount, SIGMA® is the only option. Utilising a unique manufacturing process exclusive to Flexitallic, SIGMA® represents the latest generation of biaxially orientated PTFE materials.
All components in the SIGMA® range are FDA compliant. The material's clean nature makes it ideal for use where product contamination is of concern, such as food, pharmaceuticals and electronics. The chemical resistance and dimensional stability of the material ensures total sealing reliability and minimises fugitive emissions.
Engineered and Manufactured in the UK
Cryogenic to 260°C
Outstanding chemical resistance across pH range
Suitable for low bolt load applications
Materials available in a range of different sheet sizes and thicknesses
Available for oxygen service
Easy to handle and cut
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.