Sigma® 511

Sigma® 511

Food Approved ProductsWRAS / WRC Approved Product



Sigma® 511 is a high performance biaxially orientated PTFE sheet containing a silica filler.

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

Max Pressure: 85 bar.

Key Features / Applications: Suitable for sealing applications across the whole pH range. It is particularly suitable for use with strong acids (except hydrofluoric acid) and can be used with all concentrations of sulphuric acid. However, it is not suitable for use with molten alkali metals, fluorine gas or hydrogen fluoride. Conforms to FDA regulations and is WRAS approved for use with potable water. 

Standards: TA-LUFT approved, BAM Oxygen, Tested in accordance to EC Regulation No. 10/2011, WRAS approved for use with potable water, complies with FDA requirements.


Product Code Sheet Size (mm)* Sheet Thickness (mm)
SIGMA511-0.75 1500 x 1500 0.75
SIGMA511-1 1500 x 1500 1
SIGMA511-1.5 1500 x 1500 1.5
SIGMA511-2 1500 x 1500 2
SIGMA511-3 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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