DIMENSIONAL STANDARD
DIN 2690
Flat gasket dimensions by nominal size and pressure group. Compare inside and outside diameters across all pressure groups.
READING THE DRAWING
Inside diameter. Outside diameter.
- d1
- Gasket inside diameter
- d2
- Outside diameter for your PN group
The drawing shows a 2 mm reference thickness. Flange separation is enlarged for clarity.
Find your dimensions
Compare all nominal sizes and pressure groups. Choose millimetres or inches.
| DN | d1 Inside diameter (mm) | PN 1 / 2.5 d2 (mm) | PN 6 d2 (mm) | PN 10 d2 (mm) | PN 16 d2 (mm) | PN 25 d2 (mm) | PN 40 d2 (mm) |
|---|---|---|---|---|---|---|---|
| 4 | 6 | — | — | — | — | 30 | — |
| 6 | 10 | Use PN 6 | 28 | Use PN 40 | Use PN 40 | Use PN 40 | 38 |
| 8 | 14 | Use PN 6 | 33 | Use PN 40 | Use PN 40 | Use PN 40 | 43 |
| 10 | 18 | Use PN 6 | 38 | Use PN 40 | Use PN 40 | Use PN 40 | 45 |
| 15 | 22 | Use PN 6 | 43 | Use PN 40 | Use PN 40 | Use PN 40 | 50 |
| 20 | 28 | Use PN 6 | 53 | Use PN 40 | Use PN 40 | Use PN 40 | 60 |
| 25 | 35 | Use PN 6 | 63 | Use PN 40 | Use PN 40 | Use PN 40 | 70 |
| 32 | 43 | Use PN 6 | 75 | Use PN 40 | Use PN 40 | Use PN 40 | 82 |
| 40 | 49 | Use PN 6 | 85 | Use PN 40 | Use PN 40 | Use PN 40 | 92 |
| 50 | 61 | Use PN 6 | 95 | Use PN 40 | Use PN 40 | Use PN 40 | 107 |
| 65 | 77 | Use PN 6 | 115 | Use PN 40 | Use PN 40 | Use PN 40 | 127 |
| 80 | 90 | Use PN 6 | 132 | Use PN 40 | Use PN 40 | Use PN 40 | 142 |
| 100 | 115 | Use PN 6 | 152 | Use PN 16 | 162 | Use PN 40 | 168 |
| 125 | 141 | Use PN 6 | 182 | Use PN 16 | 192 | Use PN 40 | 195 |
| 150 | 169 | Use PN 6 | 207 | Use PN 16 | 218 | Use PN 40 | 225 |
| 175 | 195 | Use PN 6 | 237 | Use PN 16 | 248 | 255 | 267 |
| 200 | 220 | Use PN 6 | 262 | Use PN 16 | 273 | 285 | 292 |
| 250 | 274 | Use PN 6 | 318 | 328 | 330 | 342 | 353 |
| 300 | 325 | Use PN 6 | 373 | 378 | 385 | 402 | 418 |
| 350 | 368 | Use PN 6 | 423 | 438 | 445 | 458 | 475 |
| 400 | 420 | Use PN 6 | 473 | 490 | 497 | 515 | 547 |
| 450 | 470 | Use PN 6 | 528 | 540 | 557 | 565 | 572 |
| 500 | 520 | Use PN 6 | 578 | 595 | 618 | 625 | 628 |
| 600 | 620 | Use PN 6 | 680 | 695 | 735 | 730 | 745 |
| 700 | 720 | Use PN 6 | 785 | 810 | 805 | 830 | 850 |
| 800 | 820 | Use PN 6 | 890 | 915 | 910 | 940 | 970 |
| 900 | 920 | Use PN 6 | 990 | 1015 | 1010 | 1040 | 1080 |
| 1000 | 1020 | Use PN 6 | 1090 | 1120 | 1125 | 1150 | 1190 |
| 1200 | 1220 | 1290 | 1305 | 1340 | 1340 | 1360 | 1395 |
| 1400 | 1420 | 1490 | 1520 | 1545 | 1540 | 1575 | 1615 |
| 1600 | 1620 | 1700 | 1720 | 1770 | 1760 | 1795 | 1830 |
| 1800 | 1820 | 1900 | 1920 | 1970 | 1960 | 2000 | — |
| 2000 | 2020 | 2100 | 2135 | 2180 | 2165 | 2230 | — |
| 2200 | 2220 | 2305 | 2345 | 2380 | 2375 | — | — |
| 2400 | 2420 | 2505 | 2555 | 2590 | 2585 | — | — |
| 2600 | 2620 | 2705 | 2760 | 2790 | 2785 | — | — |
| 2800 | 2820 | 2920 | 2970 | 3010 | — | — | — |
| 3000 | 3020 | 3120 | 3170 | 3225 | — | — | — |
| 3200 | 3220 | 3320 | 3380 | — | — | — | — |
| 3400 | 3420 | 3520 | 3590 | — | — | — | — |
| 3600 | 3620 | 3730 | 3800 | — | — | — | — |
| 3800 | 3820 | 3930 | — | — | — | — | — |
| 4000 | 4020 | 4130 | — | — | — | — | — |
DIN 2690 Dimensional Notes
Millimetre values preserve the supplied DIN 2690 source dimensions.
- DN is the nominal-size designation and is not converted when the inch view is selected.
- d1 is the inside diameter and d2 is the pressure-group-dependent outside diameter.
- “Use PN 6”, “Use PN 16” and “Use PN 40” are source-reference instructions, not missing values.
- A dash indicates that no dimensional value is specified in that source position.
- Parenthesized nominal sizes and the source ** / *** markings are preserved.
- Inch dimensions are derived from the millimetre values using mm ÷ 25.4 and displayed to four decimal places.
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