Flachdichtung UNIFLUOR® PTFE mit Füllstoff Quarz, Profil FD01, WS 7551, Dichtungsdicke 3 mm, Rev. 01

7551FD01
UNIFLUOR® WS 7551 is a high quality biaxially orientated sealing material on PTFE basis, filled with quartz.
Article Number
7551FD01
Material
7551
Profile
FD01
FD01
Type of gasket: Type IBC - flat gasket
Gasket manufacturer: IDT Industrie- und Dichtungstechnik GmbH
Gasket label: Flachdichtung UNIFLUOR® PTFE mit Füllstoff Quarz, Profil FD01, WS 7551, Dichtungsdicke 3 mm, Rev. 01
maximum temperature: 200 °C
maximum pressure: 40 bar

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Gasket thickness under load eG

Gasket thickness eG / mm
Gasket stress / MPa 20°C 100°C 150°C 200°C
0 2.905 2.935 2.93 2.93
1 2.899 2.934 2.925 2.929
5 2.881 2.913 2.912 2.904
10 2.868 2.876 2.862 2.743
15 2.852 2.785 2.736 2.461
20 2.833 2.641 2.543 2.234
30 2.784 2.308 2.223 1.909
40 2.706 2.073 1.998 1.706
50 2.588 1.883 1.831 1.555
60 2.454 1.741 1.702 1.441
80 2.241

Gasket deformation under load ΔeG

Gasket deformation ΔeG / mm
Gasket stress / MPa 20°C 100°C 150°C 200°C
0 0.000 0.000 0.000 0.000
1 0.006 0.001 0.005 0.001
5 0.024 0.022 0.018 0.026
10 0.037 0.059 0.068 0.187
15 0.053 0.150 0.194 0.469
20 0.072 0.294 0.387 0.696
30 0.121 0.627 0.707 1.021
40 0.199 0.862 0.932 1.224
50 0.317 1.052 1.099 1.375
60 0.451 1.194 1.228 1.489
80 0.664

Maximum allowable gasket stress QSmax

Temperature / °C QSmax / MPa
20 80
100 60
150 60
200 60

Modulus of elasticity EG

Modulus of elasticity EG / MPa
Gasket stress / MPa 20°C 100°C 150°C 200°C
5 5931 1258 1100 496
10 18873 1899 1452 745
15 4179 1229 1432 1066
20 3551 1187 1633 891
30 3348 1588 1992 1244
40 3513 2040 2275 1748
50 3876 1690 2422 1292
60 4256 2190 2673 1821
80 4988

Creep/relaxation factor PQR

Creep/relaxation factor PQR
Gasket stress / MPa 20°C 100°C 150°C 200°C
20 0.92 0.69 0.51 0.43
40 0.84 0.48 0.41 0.33
60 0.43 0.38 0.34
80 0.79

Minimum required gasket stress in assembly Qmin(L)

Minimum required gasket stress Qmin(L) / MPa
Leakage rate / mg/m/s 10 bar 16 bar 40 bar
10⁰ 5 5 12
10⁻¹ 8 11 16
10⁻² 14 17 20
10⁻³ 20 23 26
10⁻⁴ 27 29 36
10⁻⁵ 53 66 72

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 QSmin(L) / MPa
Tightness class 20 MPa 30 MPa 60 MPa 80 MPa
10⁰ 5 5 5 5
10⁻¹ 5 5 5 5
10⁻² 5 5 5 5
10⁻³ 5 5 5
10⁻⁴ 10 5 5
10⁻⁵ 18 10

Minimum required gasket stress at internal pressure 16 bar

Minimum required gasket stress QSmin(L) / MPa
Tightness class 20 MPa 30 MPa 40 MPa 80 MPa
10⁰ 5 5 5 5
10⁻¹ 5 5 5 5
10⁻² 8 5 5 5
10⁻³ 7 5 5
10⁻⁴ 19 7 5
10⁻⁵ 20

Minimum required gasket stress at internal pressure 40 bar

Minimum required gasket stress QSmin(L) / MPa
Tightness class 20 MPa 30 MPa 40 MPa 60 MPa 80 MPa
10⁰ 5 5 5 5 5
10⁻¹ 6 5 5 5 5
10⁻² 5 5 5 5
10⁻³ 9 5 5 5
10⁻⁴ 15 8 5
10⁻⁵ 64

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 UNIFLUOR® PTFE mit Füllstoff Quarz, Profil FD01, WS 7551, Dichtungsdicke 3 mm, Rev. 01 can be assigned to the categorie 2 : "Gaskets based on filled PTFE". Therefore, the following friction coefficients can be considered:

Temperature / °C Friction coefficient
20 °C 0.23