Elastikdichtung mit Diffusionssperre - Edelstahlwellring, Profil ED01 (PW-I), WS 7110/1.4571, Dichtungsdicke 3,5 mm, Rev. 01

Type of gasket: Sheet gasket with PTFE envelop
Gasket manufacturer: IDT Industrie- und Dichtungstechnik GmbH
Gasket label: Elastikdichtung mit Diffusionssperre - Edelstahlwellring, Profil ED01 (PW-I), WS 7110/1.4571, Dichtungsdicke 3,5 mm, Rev. 01
maximum temperature: 200 °C
maximum pressure: 80 bar

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Gasket thickness under load eG

Gasket thickness eG / mm
Gasket stress / MPa 20°C 100°C 150°C 200°C
0 3.615 3.415 3.415 3.43
1 3.57 3.411 3.411 3.418
20 2.342 2.049 2.012 2.038
30 2.076 1.992 1.952 1.913
40 1.941 1.94 1.861 1.776
50 1.873 1.862 1.753 1.641
60 1.834 1.748 1.646 1.463
80 1.762
100 1.672
120 1.576
140 1.489
160 1.422

Gasket deformation under load ΔeG

Gasket deformation ΔeG / mm
Gasket stress / MPa 20°C 100°C 150°C 200°C
0 0.000 0.000 0.000 0.000
1 0.045 0.004 0.004 0.012
20 1.273 1.366 1.403 1.392
30 1.539 1.423 1.463 1.517
40 1.674 1.475 1.554 1.654
50 1.742 1.553 1.662 1.789
60 1.781 1.667 1.769 1.967
80 1.853
100 1.943
120 2.039
140 2.126
160 2.193

Maximum allowable gasket stress QSmax

Temperature / °C QSmax / MPa
20 150
100 70
150 60
200 60

Modulus of elasticity EG

Modulus of elasticity EG / MPa
Gasket stress / MPa 20°C 100°C 150°C 200°C
20 557 428 579 600
30 839 895 1110 795
40 1356 1178 1578 1004
50 2068 1517 1911 1112
60 2477 1763 1976 1506
80 3061
100 5118
120 7518
140 5870
160 6609

Creep/relaxation factor PQR

Creep/relaxation factor PQR
Gasket stress / MPa 20°C 100°C 150°C 200°C
30 0.84 0.7 0.7 0.65
50 0.94 0.83 0.73 0.62
60 0.81 0.73 0.66
70 0.8
90 0.93
100 0.94
150 0.95

Minimum required gasket stress in assembly Qmin(L)

Minimum required gasket stress Qmin(L) / MPa
Leakage rate / mg/m/s 10 bar 40 bar 80 bar
10⁰ 5 5 10
10⁻¹ 5 5 10
10⁻² 5 5 10
10⁻³ 5 5 10
10⁻⁴ 5 5 10
10⁻⁵ 6 36 47
10⁻⁶ 59

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 40 bar

Minimum required gasket stress at internal pressure 80 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, Profil ED01 (PW-I), WS 7110/1.4571, Dichtungsdicke 3,5 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