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UNIFLUOR® PTFE with silica filler, Profile FD01, WS 7551, thickness 2 mm, Rev. 03

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: UNIFLUOR® PTFE with silica filler, FD01, WS 7551, thickness 2 mm, Rev. 03
maximum temperature: 200 °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 2.051
1 2.049
5 2.03
10 2.016
15 2
20 1.984
30 1.949
40 1.912
50 1.88
60 1.853
80 1.773
100 1.632
120 1.53
140 1.453
160 1.386

Gasket deformation under load ΔeG

Gasket deformation ΔeG / mm
Gasket stress / MPa 20°C
0 0.000
1 0.002
5 0.021
10 0.035
15 0.051
20 0.067
30 0.102
40 0.139
50 0.171
60 0.198
80 0.278
100 0.419
120 0.521
140 0.598
160 0.665

Maximum allowable gasket stress QSmax

Temperature / °C QSmax / MPa
20 160
100 110
200 90

Modulus of elasticity EG

Modulus of elasticity EG / MPa
Gasket stress / MPa 20°C 100°C 200°C
5 878 1719 620
10 3751 1128 960
15 3092 1218 692
20 3093 1456 744
30 3327 1348 1115
40 3501 1746 1297
50 3772 1528 1445
60 4150 2188 1696
80 5330 2613 2142
100 6561 3246
120 6350
140 6320
160 6232

Creep/relaxation factor PQR

Creep/relaxation factor PQR
Gasket stress / MPa 20°C 100°C 200°C
30 0.97 0.87 0.61
50 0.95 0.72 0.49
90 0.49
110 0.74
160 0.93

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 6 9 14
10⁻¹ 13 19 23
10⁻² 20 30 31
10⁻³ 28 39 39
10⁻⁴ 38 52 56
10⁻⁵ 69 79 95
10⁻⁶ 117

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 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 UNIFLUOR® PTFE with silica filler, FD01, WS 7551, thickness 2 mm, Rev. 03 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