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Flachdichtung SIGRAFLEX® Hochdruck Pro, Profil FD01, WS 3888, Dichtungsdicke 3 mm, Rev. 02

3888FD01

Sigraflex Hochdruck Pro, impregnated, with adhesive-free inserts made from 0.05 mm stainless steel foil 316L

Article Number
3888FD01
Material
3888
Profile
FD01
FD01
Type of gasket: Type IBC - flat gasket
Gasket manufacturer: IDT Industrie- und Dichtungstechnik GmbH
Gasket label: Flachdichtung SIGRAFLEX® Hochdruck Pro, Profil FD01, WS 3888, Dichtungsdicke 3 mm, Rev. 02
maximum temperature: 400 °C
maximum pressure: 80 bar

Inhaltsverzeichnis

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Gasket thickness under load eG

Gasket thickness eG / mm
Gasket stress / MPa 20°C 150°C 300°C 400°C
0 3.154
1 3.12 3.161 3.127 3.091
20 2.094 2.077 2.062 2.138
30 1.969 1.97 1.977 2.002
40 1.899 1.901 1.898 1.928
50 1.848 1.85 1.847 1.874
60 1.803 1.803 1.805 1.832
80 1.74 1.743 1.737 1.765
100 1.701 1.699 1.692 1.723
120 1.669 1.668 1.662 1.689
140 1.64 1.636 1.634 1.658
160 1.615 1.61 1.603 1.629
180 1.592 1.59 1.577
200 1.573 1.571

Gasket deformation under load ΔeG

Gasket deformation ΔeG / mm
Gasket stress / MPa 20°C 150°C 300°C 400°C
0 0.000
1 0.000 0.000 0.000 0.063
20 1.026 1.084 1.065 1.016
30 1.151 1.191 1.150 1.152
40 1.221 1.260 1.229 1.226
50 1.272 1.311 1.280 1.280
60 1.317 1.358 1.322 1.322
80 1.380 1.418 1.390 1.389
100 1.419 1.462 1.435 1.431
120 1.451 1.493 1.465 1.465
140 1.480 1.525 1.493 1.496
160 1.505 1.551 1.524 1.525
180 1.528 1.571 1.550
200 1.547 1.590

Maximum allowable gasket stress QSmax

Temperature / °C QSmax / MPa
20 200
150 200
300 180
400 160

Modulus of elasticity EG

Modulus of elasticity EG / MPa
Gasket stress / MPa 20°C 150°C 300°C 400°C
20 381 398 371 383
30 562 606 584 558
40 889 868 766 862
50 1147 1120 1109 1080
60 1287 1246 1324 1360
80 1760 1983 1620 1827
100 2649 2231 1939 2676
120 3123 2827 2878 3464
140 3057 2871 3354 3886
160 3463 3327 3184 4201
180 3764 3958 3207
200 4428 4767

Creep/relaxation factor PQR

Creep/relaxation factor PQR
Gasket stress / MPa 20°C 150°C 300°C 400°C
30 0.98 0.93 0.91 0.88
50 0.98 0.97 0.94 0.94
160 0.98
180 0.98
200 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 16 bar 25 bar 40 bar 80 bar
10⁰ 5 5 5 5 10
10⁻¹ 5 5 6 8 15
10⁻² 7 9 12 17 27
10⁻³ 21 22 25 39 49
10⁻⁴ 43 45 50 67 71
10⁻⁵ 67 74 79 92 93
10⁻⁶ 90 106 111 120 123
10⁻⁷ 122 141 157

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 25 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 Pro, Profil FD01, WS 3888, Dichtungsdicke 3 mm, Rev. 02 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