Catalogue · Metric 24° / flat seal · 20491
20491DKOL90° metric female 24° cone O-ring, light series, DIN 3865
20491 · 20491-T
M12×1.5 — M52×2
Thread rangeM12×1.5 — M52×2
Hose boreDN5 — DN40
Nut types20491 · 20491-T
Bend90° elbow
Suits hose1SN / 2SN braided
MaterialCarbon steel, stainless steel 304, 316 and 316L
FinishZinc, trivalent chromate
Zinc / trivalent chromate finish applies to carbon steel only.
Two nut types, one body
20491crimped nut
20491-Tswivel nut with retaining ring
The body and all dimensions are the same. Codes ending in T are supplied with the swivel nut.
Dimensions
| Part no. | Thread | Hose bore | Dimensions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| E | DN | Dash | Tube O.D. | O-ring | A | C | H | S2 | |
| 20491-12-03 | M12×1.5 | 5 | 03 | 6 | 4.0×1.5 | 26.5 | 1 | 41.5 | 17 |
| 20491-12-04 | M12×1.5 | 6 | 04 | 6 | 4.0×1.5 | 30 | 1 | 44.5 | 17 |
| 20491-14-04 | M14×1.5 | 6 | 04 | 8 | 6.0×1.5 | 30 | 2 | 46 | 19 |
| 20491-16-04 | M16×1.5 | 6 | 04 | 10 | 7.5×1.5 | 30 | 2 | 46.5 | 22 |
| 20491-16-05 | M16×1.5 | 8 | 05 | 10 | 7.5×1.5 | 33 | 2 | 49.5 | 22 |
| 20491-16-06 | M16×1.5 | 10 | 06 | 10 | 7.5×1.5 | 35.3 | 2 | 51.8 | 22 |
| 20491-18-05T | M18×1.5 | 8 | 05 | 12 | 9.5×1.5 | 33 | 2.5 | 42 | 22 |
| 20491-18-06 | M18×1.5 | 10 | 06 | 12 | 9.5×1.5 | 35.3 | 2.5 | 53.3 | 24 |
| 20491-22-05T | M22×1.5 | 8 | 05 | 15 | 12.0×2.0 | 33 | 2.5 | 45 | 27 |
| 20491-22-06T | M22×1.5 | 10 | 06 | 15 | 12.0×2.0 | 35.3 | 2.5 | 47.3 | 27 |
| 20491-22-08 | M22×1.5 | 12 | 08 | 15 | 12.0×2.0 | 41 | 2.5 | 61 | 27 |
| 20491-22-12 | M22×1.5 | 20 | 12 | 15 | 12.0×2.0 | 65.5 | 2.5 | 75 | 27 |
| 20491-26-10 | M26×1.5 | 16 | 10 | 18 | 15.0×2.0 | 56.5 | 2.5 | 67.5 | 32 |
| 20491-26-12 | M26×1.5 | 20 | 12 | 18 | 15.0×2.0 | 65.5 | 2.5 | 77 | 32 |
| 20491-27-10 | M27×1.5 | 16 | 10 | 18 | 15.0×2.0 | 56.5 | 2.5 | 67.5 | 32 |
| 20491-27-12 | M27×1.5 | 20 | 12 | 18 | 15.0×2.0 | 65.5 | 2.5 | 77 | 32 |
| 20491-30-16 | M30×2 | 25 | 16 | 22 | 20.0×2.0 | 76.7 | 4 | 86.5 | 36 |
| 20491-30-08T | M30×2 | 12 | 08 | 22 | 20.0×2.0 | 41 | 4 | 55 | 36 |
| 20491-30-10T | M30×2 | 16 | 10 | 22 | 20.0×2.0 | 56.5 | 4 | 57.2 | 36 |
| 20491-30-12 | M30×2 | 20 | 12 | 22 | 20.0×2.0 | 65.5 | 4 | 80 | 36 |
| 20491-36-12T | M36×2 | 20 | 12 | 28 | 26.0×2.0 | 65.5 | 4 | 69 | 41 |
| 20491-36-14T | M36×2 | 22 | 14 | 28 | 26.0×2.0 | 71.2 | 4 | 70 | 41 |
| 20491-36-16 | M36×2 | 25 | 16 | 28 | 26.0×2.0 | 76.7 | 4 | 86 | 41 |
| 20491-45-16T | M45×2 | 25 | 16 | 35 | 32.0×2.5 | 76.7 | 5 | 75 | 55 |
| 20491-45-20T | M45×2 | 32 | 20 | 35 | 32.0×2.5 | 91.5 | 5 | 88.5 | 55 |
| 20491-52-20T | M52×2 | 32 | 20 | 42 | 38.0×2.5 | 93 | 5.5 | 87 | 60 |
| 20491-52-24T | M52×2 | 40 | 24 | 42 | 38.0×2.5 | 109.4 | 5.5 | 103.5 | 60 |
The last digit of the code tells you the hose: 1 — braided 1SN and 2SN, 2 — spiral 4SH, 3 — skived for interlock. The second digit from the end is the bend: 1 straight, 3 for 30°, 4 for 45°, 9 for 90°.
Metric 24° / flat seal
All series1E14 sizes4E11 sizes1EG16 sizes1EL7 sizes1EO7 sizes1EW5 sizes1031118 sizes1041119 sizes1041218 sizes1051116 sizes1051215 sizes105133 sizes1061111 sizes1071119 sizes200113 sizes2011145 sizes2011216 sizes2014113 sizes2014210 sizes2019118 sizes2019211 sizes2021155 sizes2021231 sizes202317 sizes2024118 sizes2024214 sizes2029132 sizes2029224 sizes2041126 sizes2041217 sizes2044121 sizes2044219 sizes2049127 sizes2049223 sizes2051124 sizes2051223 sizes205138 sizes2054121 sizes2054220 sizes205433 sizes2059123 sizes2059221 sizes205933 sizes2061115 sizes2064110 sizes2069111 sizes2071145 sizes2071215 sizes2074113 sizes2074210 sizes2079120 sizes2079213 sizes10512G9 sizes10811L9 sizes1ET-SP9 sizes20411C16 sizes20491C11 sizes20511C10 sizes20541C4 sizes10412-F10 sizes10411-GB13 sizes10412-GB1 sizes10511-GB3 sizes10512-GB3 sizes
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