EGRAFLEX STEELFLON WAVELINEX WLP ®Multilayer fl at gasket with huge potential

www.awschultze.dewww.awschultze.dewww.awschultze.de

EGRAFLEX STEELFLON WAVELINE WLP ®Multilayer fl at gasket with huge potential

PROBLEM! The aforementioned material combinations continually come up against application limits.

System operators and gasket manufacturers are constantly looking for better solutions to seal fl ange connections effi ciently, reliably and safely without harming the environment. For applications in the higher temperature range, graphite composite materials, PTFE-based materials and metal-soft material gaskets are becoming increasingly important.

Teams made up of system operators and lawmakers are contributing towards defi ning valid specifi cations for all operators. This aims to ensure that the required claims for environmental protection and plant safety are complied with.

Aim of the product development: Only the positive properties, as shown in the table below, should become effective. The result is a sealing plate from the components graphite and stainless steel fi lms with PTFE covering fi lms attached on both sides in adhesive-free (!) composite – the multilayer plate “Egrafl ex Steelfl on MF®”

Properties PTFE Graphite Stainless Steal Egrafl ex Steelfl on Waveline WLP®

Compensating unevenness medium very good poor very good

Required area compression/clamping force

medium medium very high very low

Handling very good poor good very good

Chemical resistance very good good good good

Sealing performance very good good very good very good

Resilience poor good poor good

Internal pressure resistance medium medium very good good

Aging resistance good very good very good very good

Temperature resistance medium good very good medium

Availability of special geometries good good poor good

Disposal poor good good good

Further information on A. W. Schultze GmbH:• market experience since 1878• approx. 70 employees at the Geesthacht site• belongs to the Klinger Group since 2004 with approx. 3,000 employees worldwide

Photo: Grinding pattern of an Egrafl ex Steelfl on Waveline WLP® gasket

EGRAFLEX STEELFLON WAVELINE WLP ®

APPROVALS!• TA-Luft

• FDA

• BAM

• DVGW

• VCI Guidelines

• Leak tightness and strength validations according to DIN EN 1591

SOLUTION TOTHE PROBLEM! Egrafl ex Steelfl on Waveline WLP® isa solution developed by A.W.Schultze that fulfi ls these requirements.Based on the known multilayer sealing plate “Sigrafl ex® MF”, made by SGL, this product has been manufactured as Egrafl ex Steelfl on since 1995 and is used very successfully in prominent industrial companies.

Laminate thicknesses are chosen corresponding to the target objective. A.W.Schultze GmbH punches gaskets from the plate material and provides these with an internal enclosuremade from VA. Finally, the gasket ispre-pressed with very preciselydefi ned force with the aim of attaining an effective, corrugated cross-section geometry.

The corrugated geometry clearly visible in the above grinding pattern forms a sine curve. A strong pre-compression over all material layers is achieved. As graphite does not undergo any noteworthy change in thickness from approx. 50 MPa, the settling behaviour of the gasket is signifi cantly improved in practice with the Waveline WLP® process. The VA internal enclosure also receives this pre-compression, thereby closing off the sealing cross-section without the fl ange having to apply the normal deformation work. The following values result correspondingly according to EN 13555. (Please fi nd the values in the diagrams on the rear.)

The PTFE cover fi lms applied on both sidesensure short installation times when changingthe gaskets.

Adhesion to the fl ange is prevented – the gasket can be removed without leaving any residues. Further spreading or disassembly of the fl ange for cleaning the sealing surfaces is no longer necessary, which means the fl ange cleaningcan be carried out without fault.

The pre-compression and structure of the gasket prevents the absorption of water and hence failure of the gasket, which can result from the installation of wet graphite gaskets.

Photo: Mulitlayerplatte Sigrafl ex MF®

Stainless steel fi lms 1.4571

PTFE fi lm TFM 1700

Graphite fi lms 99.85%

www.awschultze.dewww.awschultze.dewww.awschultze.dewww.awschultze.de

Installation safetyFor a clear improvement in the installation safety and precise, reliable assignment of the gasket, Egrafl ex Steelfl onWaveline WLP® gaskets can also be supplied with part marking.This typically includes information on theinstallation torque, nominal width andnominal pressure, manufacturer, customer parts number and material data.

The gasket is available in thicknesses from 2.0 to 4.0 mm.Standard dimensions in stock.Special sizes:any geometry up to diameter 4,500 mm available!

For a clear improvement in the installation safety and precise, reliable assignment of the gasket, Egrafl ex Steelfl on

gaskets can also be supplied with

This typically includes information on theinstallation torque, nominal width andnominal pressure, manufacturer, customer

The gasket is available in thicknesses

any geometry up to diameter 4,500

Photo: Egrafl ex Steelfl on Waveline WLP® gasket with internal andexternal enclosure and possible markings

EGRAFLEX STEELFLON WAVELINE WLP ® BENEFITS AT A GLANCE:!• minimum settling behaviour

• extremely high leak tightness

• no sticking to the fl ange

• no contamination of the gasket / medium

• rapid installation times thanks to good handling

• universal use = reduced warehousing

• relevant approvals available

www.awschultze.de

Two / Multi-component gaskets Dynamic gaskets

Packing /Cords /Bands

Grooved gaskets

KLINGER® top-chem series Sieve gaskets / hat sieves

Exhaust gaskets

Fabric compensators Metal compensators

Beaded gaskets

Mica gaskets with enclosure

Rubber-steel gaskets

Technical textiles Technical auxiliaries

Gaskets with marking

Plastics

LEARN ABOUT OUR OTHERPRODUCTS TOO:Extract from our extensive product portfolio.You can fi nd our product range at www.awschultze.de

www.awschultze.de

A. W. Schultze GmbH • Mercatorstraße 10 • D-21502 GeesthachtTel. +49 (0) 4152 / 8775-0 • Fax +49 (0) 4152 / 8775-31www.awschultze.de • info@awschultze.de

PQ

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A.W

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ato

rstr

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21502 G

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acht,

Germ

any

Accord

ing t

o

DIN

EN

13555

2014-0

7G

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Typ

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gra

flex S

teelflo

n W

avelin

e W

LP

Sealin

g e

lem

en

t d

imen

sio

ns [

mm

]92 x

49 x

2.3

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for

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of

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was n

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dete

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Rev -

No:

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ate

of

this

sheet:

2017-0

5-1

9

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1E-6

1E-5

1E-4

1E-3

1E-2

1E-1

1E+0

020

4060

8010

012

014

016

018

0

leak rate [mg/(s*m)]

gask

et st

ress

[MPa

]

Le

ak

ag

e -

am

bie

nt

tem

pe

ratu

re / i

nn

er

pre

ss

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= 1

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loadin

g c

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un

loa

din

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Qm

in/Q

sm

in

1E-6

1E-5

1E-4

1E-3

1E-2

1E-1

1E+0

1E+1

020

4060

8010

012

014

016

018

0

leak rate [mg/(s*m)]

gask

et st

ress

[MPa

]

Le

ak

ag

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am

bie

nt

tem

pe

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Qm

in/Q

sm

in

Valu

es a

ccor

ding

to E

N 1

3555

:

Sou

rce:

ww

w.g

aske

tdat

a.or

g