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Kammprofildichtung, SIGRAFLEX® MF Auflage, Profil KD01-KD10-KD20-KD30, WS 1.4571/3871, Dichtungsdicke 5 mm, Rev. 01

Type of gasket: Kammprofile gasket
Gasket manufacturer: IDT Industrie- und Dichtungstechnik GmbH
Gasket label: Grooved gasket, SIGRAFLEX® MF layer, Profile KD01-KD10-KD20-KD30, WS 1.4571/3871, thickness 5 mm, Rev. 01
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
0 5.215
1 5.137
20 4.48
30 4.41
40 4.37
50 4.35
60 4.34
80 4.31
100 4.29
120 4.28
140 4.27
160 4.27
180 4.26
200 4.25
220 4.24
240 4.23
260 4.22
280 4.2
300 4.18
320 4.16
340 4.14
360 4.12
380 4.1
400 4.07
420 4.05
440 4.02
460 3.99
480 3.96
500 3.93

Gasket deformation under load ΔeG

Gasket deformation ΔeG / mm
Gasket stress / MPa 20°C
0 0.000
1 0.078
20 0.735
30 0.805
40 0.845
50 0.865
60 0.875
80 0.905
100 0.925
120 0.935
140 0.945
160 0.945
180 0.955
200 0.965
220 0.975
240 0.985
260 0.995
280 1.015
300 1.035
320 1.055
340 1.075
360 1.095
380 1.115
400 1.145
420 1.165
440 1.195
460 1.225
480 1.255
500 1.285

Maximum allowable gasket stress QSmax

Temperature / °C QSmax / MPa
20 500
150 500
300 500

Modulus of elasticity EG

Modulus of elasticity EG / MPa
Gasket stress / MPa 20°C 150°C 300°C
20 2544 3066 4935
30 5655 5099 7084
40 6273 8559 7497
50 7187 7170 8899
60 13484 12770 8287
80 11670 10352 11715
100 13485 16505 12278
120 24376 21021 19671
140 25568 24444 22410
160 33598 22365 22070
180 32227 23276 24891
200 31118 29702 22682
220 31744 27602 30765
240 34602 31498 34634
260 51700 33997 40058
280 57943 57887 43073
300 52799 75393 54950
320 45066 41021 55427
340 64011 43604 55958
360 88826 59499 65750
380 94960 52220 69516
400 88878 71092 54649
420 100056 109579 80306
440 101864 86692 136746
460 106880 75883 82426
480 113314 123880 73476
500 149075 93095 88607

Creep/relaxation factor PQR

Creep/relaxation factor PQR
Gasket stress / MPa 20°C 150°C 300°C
30 0.96 0.81 0.65
80 1 0.94 0.81
500 0.99 0.95 0.94

Minimum required gasket stress in assembly Qmin(L)

Minimum required gasket stress Qmin(L) / MPa
Leakage rate / mg/m/s 10 bar 40 bar
10⁰ 10 10
10⁻¹ 10 14
10⁻² 10 22
10⁻³ 32 44
10⁻⁴ 61 67
10⁻⁵ 100 107
10⁻⁶ 139

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

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 Grooved gasket, SIGRAFLEX® MF layer, Profile KD01-KD10-KD20-KD30, WS 1.4571/3871, thickness 5 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