The design principle of the KLINGERmaxiflex Spiral-Wound Gasket

Spiral Wound Gasket have the ability to recover under the action of fluctuating loads caused by process fluid pressure and temperature changes, flange face temperature variations, flange rotation, bolt stress relaxation and creep.

The gasket sealing element consists of a pre formed metallic winding strip with layers of a softer, more compressible sealing material which, during compression, is densified and flows to fill imperfection in the flange surfaces when the gasket is seated. The metal strip holds the filler giving the gasket mechanical (resistance) and resilience.

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Inner and outer rings can be fitted which are used for centralizing the gaskets on the face of the flange and protecting the inner windings against erosion. They also act as a compression stop. Maxiflex Spiral Wound gaskets can be manufactured using a range of filler materials according to different service condition.

Maxiflex gaskets can be manufactured to meet all of the international standards such as ASME B16.20, DIN and customer specific requirements.

Flange Surface Finish

Maxiflex gaskets are capable of giving an excellent seal over a wide range of flange surface finishes, but as a general guide we suggest the following:

General3.2-6 3µm125-250µ”
Critical3 2µm125µ”


Winding MaterialMaximum temperature
Carbon steel500°C
304 Stainless steel650°C
316L Stainless steel800°C
Duplex UN  S 31803800°C
347 Stainless steel870°C
321 Stainless steel870°C
Monel 400800°C
Nickel 200600°C
Titanium Gr2500°C
Titanium Gr7500°C
Hastelloy B-2/B-3700°C
Hastelloy C-276700°C
Inconel 6001000°C
Inconel 6251000°C
Inconel X 7501000°C
Incoloy 825600°C
Super Duplex600°C
Alloy 20600°C
Other grades of steel available on request.


Filler MaterialMaximum and minimum temperature
Graphite-200 to 500°C
PTFE-196 TO 260°C
Mica & Graphite900°C
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