Stainless steel lined PTFE gaskets

To prevent cold-flow at high temperatures and/or at high pressures, the PTFE gaskets with perforated stainless steel insert are highly recommended for use instead of normal PTFE envelope-gaskets.

Acrobat fileSealing solutions: steel lined gaskets (english) (1011KB)
Acrobat fileSealing solutions: steel lined gaskets (german) (1128KB)

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Stainless steel lined PTFE gasketsStainless steel lined PTFE gaskets

Standard Sizes

DN Ød DIN 2690 - ØD
PN10 PN16 PN25 PN40
10 18 45 45 45
15 22 50 50 50
20 28 60 60 60
25 35 70 70 70
32 43 82 82 82
40 49 92 92 92
50 61 107 107 107
65 77 127 127 127
80 90 142 142 142
100 115 162 162 168 168
125 141 192 192 195 195
150 169 218 218 225 225
200 220 273 273 292
250 274 328 330 353
300 325 378 418
350 368 438
400 420 490
450 470 540
500 520 595
600 620 695
DN Ød ANSI - B - 16.21 - A
150" 300"
1/2" 21 45 53
3/4" 27 57 66
1" 33 66 73
1 1/4" 42 76 82
1 1/2" 48 85 95
2" 60 104 111
2 1/2" 73 123 130
3" 89 136 149
3 1/2" 102 161 165
4" 114 174 180
5" 141 196 215
6" 168 222 250
8" 219 279 307
10" 273 339 361
12" 324 409 422
14" 356 450 485
16" 406 514 539
18" 457 549
20" 508 606
22" 559 660
24" 610 717

Fitting instructions

To achieve optimum efficiency and maximum service life, note the following recommended tightening torques (Nm) on flange fixing screws :

DN Nm DN Nm
25 20   200 68
40 20   250 75
50 27   300 82
65 34   350 95
80 41   400 102
100 47   450 108
125 54   500 115
150 60   600 122

PT-Diagram

Stainless steel lined PTFE gaskets
VESPEL® is a registered trademark of E.I. du Pont de Nemours and Company. TFM® is a trademark of Dyneon. ©2018 Vanéflon NV
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