Sigma® 533

Sigma® 533

Food Approved Products



Sigma® 533 is a high performance biaxially orientated PTFE sheet. The Sigma® 533 sheet contains a barium sulphate (barytes) filler. 

Temperature: -250°C to +260°C maximum.

Max Pressure: 85 bar.

Key Features / Applications: Suitable for sealing applications across the whole pH range with the exception of molten alkali metals, fluorine gas and anhydrous HF. It is also suitable for use with hydrofluoric acid below 49%. The Sigma® 533 is particularly suitable for use in applications involving strong alkalis. Ideal for sealing food, pharmaceutical and other non-contamination applications. Conforms to FDA regulations.

Standards: TA-LUFT approved, complies with FDA requirements.


Product Code Sheet Size (mm)* Sheet Thickness (mm)
SIGMA533-1.5 1500 x 1500 1.5
SIGMA533-3 1500 x 1500 3

*Other sheet sizes/thicknesses are available upon request, but may be subject to longer lead times. 

Note: Maximum temperature and pressure should not be used at the same time. All values are dependant on application. Please refer to the data sheet below.

Technical Specification:

Technical Data Sheet

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