Flachdichtung SIGRAFLEX® Hochdruck Pro mit Innenbördel (1.4571, s=0,1), Profil FD10, WS 3888 IB, Dichtungsdicke 2 mm, Rev. 01

3888FD10
SIGRAFLEX® HOCHDRUCK PRO, impregnated, with adhesive-free insert made from 0.05 mm stainless steel foil 316L and eyelet made from stainless steel 1.4571
Article Number
3888FD10
Material
3888
Profile
FD10
FD10
Type of gasket: Sheet gasket with inner eyelet
Gasket manufacturer: IDT Industrie- und Dichtungstechnik GmbH
Gasket label: SIGRAFLEX® Hochdruck Pro with inner eyelet (1.4571, s=0,1), FD10, WS 3888 IB, thickness 2 mm, Rev. 01
maximum temperature: 400 °C
maximum pressure: 160 bar

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Gasket thickness under load eG

Gasket thickness eG / mm
Gasket stress / MPa 20°C 150°C 300°C 400°C
1 1.998 1.973 1.903 1.924
20 1.508 1.475 1.467 1.482
30 1.419 1.399 1.414 1.426
40 1.372 1.352 1.361 1.369
50 1.327 1.306 1.322 1.318
60 1.294 1.272 1.289 1.289
80 1.252 1.219 1.242 1.227
100 1.215 1.189 1.21 1.191
120 1.188 1.172 1.185 1.14
140 1.168 1.158
160 1.156 1.146
180 1.147
200 1.135

Gasket deformation under load ΔeG

Gasket deformation ΔeG / mm
Gasket stress / MPa 20°C 150°C 300°C 400°C
1 0.000 0.000 0.000 0.000
20 0.490 0.498 0.436 0.442
30 0.579 0.574 0.489 0.498
40 0.626 0.621 0.542 0.555
50 0.671 0.667 0.581 0.606
60 0.704 0.701 0.614 0.635
80 0.746 0.754 0.661 0.697
100 0.783 0.784 0.693 0.733
120 0.810 0.801 0.718 0.784
140 0.830 0.815
160 0.842 0.827
180 0.851
200 0.863

Maximum allowable gasket stress QSmax

Temperature / °C QSmax / MPa
20 200
150 160
300 120
400 120

Modulus of elasticity EG

Modulus of elasticity EG / MPa
Gasket stress / MPa 20°C 150°C 300°C 400°C
20 314 474 418 394
30 505 584 864 621
40 933 910 1131 926
50 976 1087 1418 869
60 1329 1398 1610 1579
80 2176 1804 2417 1685
100 2404 2637 3226 2241
120 2858 3914 3653 3103
140 3310 4527
160 4759 5165
180 6620
200 7071

Creep/relaxation factor PQR

Creep/relaxation factor PQR
Gasket stress / MPa 20°C 150°C 300°C 400°C
30 0.99 0.93 0.92 0.92
50 0.99 0.96 0.95 0.95
120 0.97 0.97
160 0.99
200 1

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 bar 160 bar
10⁰ 5 5 20 20 20
10⁻¹ 5 9 20 20 29
10⁻² 7 20 33 41 63
10⁻³ 24 49 67 77 88
10⁻⁴ 55 104 107 127
10⁻⁵ 133 136 176

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

Minimum required gasket stress at internal pressure 100 bar

Minimum required gasket stress at internal pressure 160 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 SIGRAFLEX® Hochdruck Pro with inner eyelet (1.4571, s=0,1), FD10, WS 3888 IB, thickness 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