Fluorogask Expanded PTFE Gasket

Fluorogask represents the state of the art in gasket technology, a pre-compressed piping gasket produced wholly from multi-directionally expanded PTFE. It is designed for use across the pharmaceutical and chemicals industries combining the corrosion performance and inertness of PTFE with a physical construction that produces an excellent gasket material. PTFE and PFA lined piping systems do not usually require gaskets to maintain joint integrity. However, there are exceptions to this rule where joints are made and broken regularly, where lined equipment is joined to dissimilar materials or where gasketing has been selected as a site wide standard. Fluorogask fulfils not only the gasketing needs of a lined piping system, but can also be used as the gasket of choice across all piping applications. Capable of meeting all types of flange standards, having almost universal corrosion resistance and handling a wide temperature, pressure and vacuum range they have countless applications. The multi-directional expanded PTFE improves the mechanical properties of PTFE making it highly conformable enabling it to achieve incredible levels of integrity across a comprehensive range of materials and flange types. 

The gaskets are manufactured to conform to ASME B16.21, the gasket fits within the inner bolt circle (IBC) of the flanges providing as easy and safe installation. They are dimensionally stable and have a pre-compressed core increasing the rigidity and preventing cross contamination. 

They are both FDA and EU1935/2004 compliant for use across food and pharmaceutical manufacturing plants.  

Expanded PTFE gasket


Dimensions According to ASME 150

To Suit Pipework NB Ø o.d B Ø i.d  AThickness T
Inches mm mm mm mm
1/2" 15 4821 3.0
3/4" 20 57 27 3.0
1" 25 67 33 3.0
1.1/2" 40 86 48 3.0
2" 50 105 60 3.0
2.1/2" 65 124 73 3.0
3" 80 137 89 3.0
4" 100 175 114 3.0
6" 150 222 168 3.0
8" 200 279 219 3.0
10" 250 340 273 3.0
12" 300 410 324 3.0

Recommended Torque Figures

To Suit Pipework NB  Lined Piping*Metal Joints MinMetal Joints Max
Inches mm NmNm Nm
1/2" 15 766
3/4" 20 15 84
1" 25 19 12 84
1.1/2" 40 27 23 84
2" 50 47 45 164
2.1/2" 65 53 53 164
3" 80 73 76 164
4" 100 54 53 167
6" 150 108 98 289
8" 200 136 138 289
10" 250 127 146 465
12" 300 145216 465

*Figures shown for ASME 150 flanged connections.

*For lined piping the above figures can be exceeded by a value of 50% to affect a seal.

For more information please contact our sales team.


Contact Details

Corrosion Resistant Products Ltd
Todmorden Road
Littleborough
OL15 9EG

Phone: +44(0)1706 756400
Fax: +44(0)1706 379567
Email: