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Flachdichtung SIGRAFLEX® Universal mit Innenbördel (1.4571), Profil FD10, WS 3862 IB, Dichtungsdicke 2 mm, Rev. 03

Type of gasket: Sheet gasket with inner eyelet
Gasket manufacturer: IDT Industrie- und Dichtungstechnik GmbH
Gasket label: Flachdichtung SIGRAFLEX® Universal mit Innenbördel (1.4571), Profil FD10, WS 3862 IB, Dichtungsdicke 2 mm, Rev. 03
maximum temperature: 300 °C
maximum pressure: 40 bar

Inhaltsverzeichnis

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Gasket thickness under load eG

Gasket thickness eG / mm
Gasket stress / MPa 20°C 150°C 300°C
0 1.965 1.97 1.995
1 1.965 1.97 1.995
20 1.39 1.371 1.366
30 1.308 1.296 1.301
40 1.245 1.235 1.241
50 1.197 1.193 1.206
60 1.167 1.162 1.174
80 1.122 1.12 1.132
100 1.091 1.091 1.095
120 1.059 1.064 1.062
140 1.036 1.038 1.033
160 1.016 1.008 1.004
180 0.996 0.988
200 0.98

Gasket deformation under load ΔeG

Gasket deformation ΔeG / mm
Gasket stress / MPa 20°C 150°C 300°C
0 0.000 0.000 0.000
1 0.000 0.000 0.000
20 0.575 0.599 0.629
30 0.657 0.674 0.694
40 0.720 0.735 0.754
50 0.768 0.777 0.789
60 0.798 0.808 0.821
80 0.843 0.850 0.863
100 0.874 0.879 0.900
120 0.906 0.906 0.933
140 0.929 0.932 0.962
160 0.949 0.962 0.991
180 0.969 0.982
200 0.985

Maximum allowable gasket stress QSmax

Temperature / °C QSmax / MPa
20 200
150 180
300 160

Modulus of elasticity EG

Modulus of elasticity EG / MPa
Gasket stress / MPa 20°C 150°C 300°C
20 419 562 585
30 731 811 871
40 858 1076 1068
50 1052 1577 1520
60 1478 1447 1526
80 1719 2225 2408
100 2053 2346 2035
120 1936 2388 2403
140 2010 2599 3026
160 2187 2842 2819
180 2272 3058
200 2265

Creep/relaxation factor PQR

Creep/relaxation factor PQR
Gasket stress / MPa 20°C 150°C 300°C
30 0.98 0.92 0.86
50 0.98 0.96 0.93
100 1 0.98 0.96
160 0.98
180 0.99
200 0.99

Minimum required gasket stress in assembly Qmin(L)

Minimum required gasket stress Qmin(L) / MPa
Leakage rate / mg/m/s 40 bar
10⁰ 10
10⁻¹ 12
10⁻² 34
10⁻³ 57
10⁻⁴ 79
10⁻⁵ 141

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

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 Flachdichtung SIGRAFLEX® Universal mit Innenbördel (1.4571), Profil FD10, WS 3862 IB, Dichtungsdicke 2 mm, Rev. 03 can be assigned to the categorie 3 : "Gaskets based on flexible graphite". Therefore, the following friction coefficients can be considered:

Temperature / °C Friction coefficient
20 °C 0.22