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Dimensions in this helper are derived from EN 1092-1 flange geometry where applicable.
If you are unsure, use Manual mode or contact us.
If you are unsure, use Manual mode or contact us.
Ring face is typically inside the bolts. Full face includes bolt holes.
Greyed-out DN/PN values are not advised for Non-asbestos gaskets.
Use Manual mode, choose another material ore contact us if you require this configuration.
Use Manual mode, choose another material ore contact us if you require this configuration.
After applying, the values are copied into Manual mode and used for the drawing & RFQ.
Thickness depends on application, pressure, temperature and medium.
Any helper thickness is only a recommendation — contact us if you’re unsure.
Any helper thickness is only a recommendation — contact us if you’re unsure.
2D schematic
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Tip: enter PCD + hole Ø + holes to show bolt pattern.
Non-asbestos gaskets specifications
Type: Non-asbestos compressed fibre gasket sheet (Doniflex-A)
Composition: Aramid/cellulose fibres with elastomer binder (typically NBR) and mineral fillers
Temperature Range: approx. −40 °C to +250 °C (short peaks higher, depending on application)
Pressure Range: medium to high (depends on flange design, bolt load and medium)
Resistance: water, steam, oils, fuels, mild chemicals
Doniflex-A is a general-purpose, non-asbestos fibre gasket material for industrial flange sealing. It offers good mechanical strength and reliable sealing performance in common utilities and process applications. Suitable for cutting flange gaskets, rings and custom shapes from sheet material.
