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High-Performance PTFE Flat Seals

Application area Almost universally usable (depending on pressure and temperature) Not... more

Application area

Almost universally usable (depending on pressure and temperature)

Not usable in alkali metals, elemental fluorine and chlorine trifluoride at high pressures

Product specification

Pure PTFE

Non-combustible

Excellent chemical resistance

Outstanding temperature resistance

Resistance: almost universal (see exceptions)

Technical specification

Material: PTFE (polytetrafluoroethylene)

Color: white

Density: 2.14 - 2.19 g/m3 (DIN 53479-A)

Ball pressure hardness: 27 - 32 N/mm2 (DIN ISO 2039-1)

Tensile strength: 22 - 30 MPa (DIN EN ISO 527-2)

Elongation at break: 250 - 400 % (DIN EN ISO 527-2)

Tensile modulus: 350 - 750 MPa (DIN 53457)

Modulus of elasticity in bending: 600 - 800 MPa (DIN 53457)

Friction coefficient: 0.1 - 0.2 (dyn. against steel, dry)

Shore hardness D: 55° - 60° (DIN 53505)

Dielectric constant: 2.0 - 2.1 at 103 Hz and 106 Hz (DIN 53483)

Volume resistivity: >1018 Ohm x cm (ASTM D 257)

Thermal conductivity: 0.23 W/m * K (DIN 52612)

Coefficient of linear thermal expansion: 10 - 16 x 105/K (DIN 53752)

Oxygen index: >95 %

Water absorption: 0 % (ASTM D 570)

Temperature range: -200 to +260 °C

Melting point: +327 °C

General Information Flat seals are usually stamped as rings. For more complicated geometries,... more

General Information

Flat seals are usually stamped as rings. For more complicated geometries, the rings are frequently cut by means of plotter or water jet. Rings are defined by the dimensions of the internal and external diameter as well as by the total thickness of the ring but often also by nominal diameter and pressure stage according to DIN 2690, 2691 (or 2692). For the purpose of harmonizing standards, these former flat seal standards are summarized in the EU standard DIN.

EN 1514-1. Still, the following sub-descriptions serve the purpose of illustrating the individual shapes: former DIN 2690: now EN 1514-1 Form IBC for smooth flanges; former DIN 2691: now EN 1514-1 Form TG for flanges with groove and tongue.

Advantages compared with other sealing elements:

symmetrical cross section, simple compact design, easy installation, wide selection of materials, grooving not required

Most common application: Flange sealing against liquid or gaseous media; static or quasistatic applications only.

Further applications: Housing and cover sealings.

Method of operation: The flat seal is axially pressed when mounting. The axial press force has to be greater than the sum of all radially acting forces to eliminate the risk of leakage. Cross-sectional leakage (the leakage diffused through the sealing material) is minimized by the selection of the right material. An optimal grouting of the flat seal prevents surface leakage, i.e. leakage occurring between flange and seal.

Materials for special requirements:

These flat seals are especially suited for use in processes that must comply with TA-Luft requirements.

Form IBC for smooth flanges: NW 10 to 200, PN 2.5 to 63

Form TG for flanges with groove and tongue: NW 10 to 200, PN 10 to 160

Manufacturing: according to the latest standards, with an optimal tool park, for quick and flexible handling, the traceability of materials is guaranteed, all parts go through a quality check before packaging.

Item Image Design1 Inside Ø
mm
Outside Ø
mm
Height
mm
NW
mm
PN
bar
Unit
piece
Price
Euro*
Buy
409200
IBC 18 39 2 10 6 10 69.00
409201
IBC 18 39 2 10 6 20 117.00
409202
IBC 18 46 2 10 40 10 69.00
409203
IBC 18 46 2 10 40 20 117.00
409204
IBC 18 56 2 10 63 10 69.00
409205
IBC 18 56 2 10 63 20 117.00
409206
IBC 22 44 2 15 6 10 71.00
409207
IBC 22 44 2 15 6 20 121.00
409208
IBC 22 51 2 15 40 10 71.00
409209
IBC 22 51 2 15 40 20 121.00
409210
IBC 21 61 2 15 63 10 71.00
409211
IBC 21 61 2 15 63 20 121.00
409212
IBC 27 54 2 20 6 10 96.00
409213
IBC 27 54 2 20 6 20 163.00
409214
IBC 27 61 2 20 40 10 96.00
409215
IBC 27 61 2 20 40 20 163.00
409216
IBC 25 72 2 20 63 10 96.00
409217
IBC 25 72 2 20 63 20 163.00
409218
IBC 34 64 2 25 6 10 116.00
409219
IBC 34 64 2 25 6 20 194.00
409220
IBC 34 71 2 25 40 10 116.00
409221
IBC 34 71 2 25 40 20 194.00
409222
IBC 30 82 2 25 63 10 116.00
409223
IBC 30 82 2 25 63 20 194.00
409224
IBC 43 76 2 32 6 5 91.00
409225
IBC 43 76 2 32 6 10 159.00
409226
IBC 43 82 2 32 40 5 91.00
409227
IBC 43 82 2 32 40 10 159.00
409228
IBC 41 88 2 32 63 5 91.00
409229
IBC 41 88 2 32 63 10 159.00
409230
IBC 49 86 2 40 6 5 112.00
409231
IBC 49 86 2 40 6 10 194.00
409232
IBC 49 92 2 40 40 5 112.00
409233
IBC 49 92 2 40 40 10 194.00
409234
IBC 47 103 2 40 63 5 112.00
409235
IBC 47 103 2 40 63 10 194.00
409236
IBC 61 96 2 50 6 5 146.00
409237
IBC 61 96 2 50 6 10 253.00
409238
IBC 61 107 2 50 40 5 146.00
409239
IBC 61 107 2 50 40 10 253.00
409240
IBC 59 113 2 50 63 5 146.00
409241
IBC 59 113 2 50 63 10 253.00
409242
IBC 77 116 2 65 6 5 200.00
409243
IBC 77 116 2 65 6 10 347.00
409244
IBC 77 127 2 65 40 5 200.00
409245
IBC 77 127 2 65 40 10 347.00
409246
IBC 73 138 2 65 63 5 200.00
409247
IBC 73 138 2 65 63 10 347.00
409248
IBC 89 132 2 80 6 5 230.00
409249
IBC 89 132 2 80 6 10 394.00
409250
IBC 89 142 2 80 40 5 230.00
409251
IBC 89 142 2 80 40 10 394.00
409252
IBC 86 148 2 80 63 5 230.00
409253
IBC 86 148 2 80 63 10 394.00
409254
IBC 115 152 2 100 6 5 267.00
409255
IBC 115 152 2 100 6 10 458.00
409256
IBC 115 162 2 100 16 5 267.00
409257
IBC 115 162 2 100 16 10 458.00
409258
IBC 115 168 2 100 40 5 267.00
409259
IBC 115 168 2 100 40 10 458.00
409260
IBC 110 174 2 100 63 5 267.00
409261
IBC 110 174 2 100 63 10 458.00
409262
IBC 141 182 2 125 6 5 340.00
409263
IBC 141 182 2 125 6 10 575.00
409264
IBC 141 192 2 125 16 5 340.00
409265
IBC 141 192 2 125 16 10 575.00
409266
IBC 141 194 2 125 40 5 340.00
409267
IBC 141 194 2 125 40 10 575.00
409268
IBC 135 210 2 125 63 5 340.00
409269
IBC 135 210 2 125 63 10 575.00
409270
IBC 169 207 2 150 6 5 393.00
409271
IBC 169 207 2 150 6 10 655.00
409272
IBC 169 218 2 150 16 5 393.00
409273
IBC 169 218 2 150 16 10 655.00
409274
IBC 169 224 2 150 40 5 393.00
409275
IBC 169 224 2 150 40 10 655.00
409276
IBC 163 247 2 150 63 5 393.00
409277
IBC 163 247 2 150 63 10 655.00
409278
IBC 220 262 2 200 6 5 547.00
409279
IBC 220 262 2 200 6 10 895.00
409280
IBC 220 273 2 200 16 5 547.00
409281
IBC 220 273 2 200 16 10 895.00
409282
IBC 220 284 2 200 25 5 547.00
409283
IBC 220 284 2 200 25 10 895.00
409284
IBC 220 290 2 200 40 5 547.00
409285
IBC 220 290 2 200 40 10 895.00
409286
IBC 210 309 2 200 63 5 547.00
409287
IBC 210 309 2 200 63 10 895.00
409288
TG 29 39 2 15 10 71.00
409289
TG 29 39 2 15 20 121.00
409290
TG 36 50 2 20 10 96.00
409291
TG 36 50 2 20 20 163.00
409292
TG 43 57 2 25 10 116.00
409293
TG 43 57 2 25 20 194.00
409294
TG 51 65 2 32 5 91.00
409295
TG 51 65 2 32 10 159.00
409296
TG 61 75 2 40 5 112.00
409297
TG 61 75 2 40 10 194.00
409298
TG 73 87 2 50 5 146.00
409299
TG 73 87 2 50 10 253.00
409300
TG 95 109 2 65 5 200.00
409301
TG 95 109 2 65 10 347.00
409302
TG 106 120 2 80 5 230.00
409303
TG 106 120 2 80 10 394.00
409304
TG 129 149 2 100 5 267.00
409305
TG 129 149 2 100 10 458.00
409306
TG 155 175 2 125 5 340.00
409307
TG 155 175 2 125 10 575.00
409308
TG 183 203 2 150 5 393.00
409309
TG 183 203 2 150 10 655.00
409310
TG 239 259 2 200 5 547.00
409311
TG 239 259 2 200 10 895.00
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