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Elastikdichtung mit Diffusionssperre - Edelstahlwellring - Unifluor® Auflage, Profil ED30, WS 7110/1.4571/7500, Dichtungsdicke 6,5 mm, Rev. 01

Type of gasket: Sheet gasket with PTFE envelop
Gasket manufacturer: IDT Industrie- und Dichtungstechnik GmbH
Gasket label: Elastikdichtung mit Diffusionssperre - Edelstahlwellring - Unifluor® Auflage, Profil ED30, WS 7110/1.4571/7500, Dichtungsdicke 6,5 mm, Rev. 01
maximum temperature: 200 °C
maximum pressure: 40 bar

Inhaltsverzeichnis

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Gasket thickness under load eG

Gasket thickness eG / mm
Gasket stress / MPa 20°C 50°C 100°C 200°C
0 6.5 6.71 6.69 6.6
1 6.461 6.655 6.644 6.585
20 5.046 4.931 4.549 3.995
30 4.586 4.438 4.044 3.433
40 4.22 4.003 3.585
50 3.902 3.633
60 3.635

Gasket deformation under load ΔeG

Gasket deformation ΔeG / mm
Gasket stress / MPa 20°C 50°C 100°C 200°C
0 0.000 0.000 0.000 0.000
1 0.039 0.055 0.046 0.015
20 1.454 1.779 2.141 2.605
30 1.914 2.272 2.646 3.167
40 2.280 2.707 3.105
50 2.598 3.077
60 2.865

Maximum allowable gasket stress QSmax

Temperature / °C QSmax / MPa
20 60
50 50
100 40
200 30

Modulus of elasticity EG

Modulus of elasticity EG / MPa
Gasket stress / MPa 20°C 50°C 100°C 200°C
20 562 483 393 377
30 815 760 592 556
40 1058 1050 867
50 1455 1311
60 1726

Creep/relaxation factor PQR

Creep/relaxation factor PQR
Gasket stress / MPa 20°C 50°C 100°C 200°C
10 0.83 0.67 0.53 0.36
20 0.82 0.66 0.56 0.39
30 0.39
40 0.58
60 0.87 0.75

Minimum required gasket stress in assembly Qmin(L)

Minimum required gasket stress Qmin(L) / MPa
Leakage rate / mg/m/s 10 bar 16 bar 40 bar
10⁰ 5 5 5
10⁻¹ 5 5 5
10⁻² 5 5 5
10⁻³ 5 5 6
10⁻⁴ 9 5 9

Minimum required gasket stress in service QSmin(L) depending on initial gasket stress QA

Minimum required gasket stress at internal pressure 10 bar

Minimum required gasket stress at internal pressure 16 bar

Minimum required gasket stress at internal pressure 40 bar

Friction coefficient µG

The friction coefficient between gasket and flange surface was determined for different types of gasket materials in an ESA research project.

The gasket Elastikdichtung mit Diffusionssperre - Edelstahlwellring - Unifluor® Auflage, Profil ED30, WS 7110/1.4571/7500, Dichtungsdicke 6,5 mm, Rev. 01 can be assigned to the categorie 2 : "Gaskets based on filled PTFE". Therefore, the following friction coefficients can be considered:

Temperature / °C Friction coefficient
20 °C 0.23