Flachdichtung SIGRAFLEX® Hochdruck mit Innenbördel (1.4571, s=0,1), Profil FD10, WS 3885 IB, Dichtungsdicke 2 mm, Rev. 01

3885FD10
Basic design corresponds to SIGRAFLEX® Hochdruck flat gaskets. The gasket also has an inner eyelet.
Article Number
3885FD10
Material
3885
Profile
FD10
FD10
Type of gasket: Sheet gasket with inner eyelet
Gasket manufacturer: IDT Industrie- und Dichtungstechnik GmbH
Gasket label: Flachdichtung SIGRAFLEX® Hochdruck mit Innenbördel (1.4571, s=0,1), Profil FD10, WS 3885 IB, Dichtungsdicke 2 mm, Rev. 01
maximum temperature: 300 °C
maximum pressure: 80 bar

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Gasket thickness under load eG

Gasket thickness eG / mm
Gasket stress / MPa 20°C
20 1.38
30 1.3
40 1.25
50 1.22
60 1.19
80 1.15
100 1.12
120 1.1
140 1.08
160 1.06
180 1.04
200 1.03

Gasket deformation under load ΔeG

Gasket deformation ΔeG / mm
Gasket stress / MPa 20°C
20 0.000
30 0.080
40 0.130
50 0.160
60 0.190
80 0.230
100 0.260
120 0.280
140 0.300
160 0.320
180 0.340
200 0.350

Maximum allowable gasket stress QSmax

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

Modulus of elasticity EG

Modulus of elasticity EG / MPa
Gasket stress / MPa 20°C 150°C 300°C
20 370 399 454
30 548 644 722
40 881 907 996
50 1005 1085 1262
60 1359 1401 1447
80 1996 1805 2119
100 1970 2230 2057
120 2455 2577 2461
140 2927 2828 2788
160 3030 2734 3134
180 2958 3300 3399
200 3161 3480 3273

Creep/relaxation factor PQR

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

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 8 18
10⁻² 8 30 45
10⁻³ 35 70 85
10⁻⁴ 74 122 128
10⁻⁵ 121
10⁻⁶ 154

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 Flachdichtung SIGRAFLEX® Hochdruck mit Innenbördel (1.4571, s=0,1), Profil FD10, WS 3885 IB, Dichtungsdicke 2 mm, Rev. 01 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