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| Item | Part no. toDIN 24250 | Description |
|---|---|---|
| 1.1 | 472/473 | Seal face |
| 1.2 | 412.1 | O-Ring |
| 1.3 | 474 | Thrust ring |
| 1.4 | 478 | Righthand spring |
| 1.4 | 479 | Lefthand spring |
| 2 | 475 | Seat (G9) |
| 3 | 412.2 | O-Ring |
H12N
Features
- For stepped shafts
- Single seal
- Balanced
- Dependent of direction of rotation
- Torque transmission via conical spring
Advantages
- High flexibility due to extended selection of materials
- Insensitive to low solids contents
- Short Installation length possible (G16)
- Economical balanced seal
- Seat cooling for hot water applications available (G115)
- No damage of the shaft by set screws
Operating range
Shaft diameter:
d1 = 10 ... 80 mm (0.4" ... 3.125")
Pressure: p1 = 25 bar (363 PSI)
Temperature:
t = -50 °C ... +220 °C (-58 °F ... +430 °F)
Sliding velocity: vg = 15 m/s (50 ft/s)
Axial movement: ±1.0 mm
Materials
Seal face: Carbon graphite antimony impregnated (A)
Seat G9: Silicon carbide (Q1), Special cast CrMo steel (S)
Standards and approvals
- EN 12756
Recommended applications
- Low solids content media (H12GN)
- Hot water
- Chemical industry
- Pulp and paper industry
- Water and waste water technology
- Chemical standard pumps
- Water and sewage pumps
Product variants
H12
Dimensions, items and descriptions as for H12N, but with seat G16.
Seal face: Carbon graphite antimony impregnated (A)
Seat G16: Silicon carbide (Q1), CrMo cast steel (S), Aluminium oxide (V)
H17G
Dimensions, items and descriptions as for H12N, but with shrink-fitted seal face (Q12) and seat G16.
Temperature: t = -20 °C ... +180 °C (-4 °F ... +356 °F)
Seal face: Silicon carbide (Q12)
Seat G16: Silicon carbide (Q1)
H17GN
Dimensions, items and descriptions as for H12N, but with shrink-fitted seal face (Q12), item no. 1.1.
Temperature: t = -20 °C ... +180 °C (-4 °F ... +356 °F)
Seal face: Silicon carbide (Q12)
Seat G9: Silicon carbide (Q1, Q2), Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B)
Click image to enlarge
G16
(EN 12756 but l1k and l2 are shorter than specified)
Click image to enlarge
G115
Cooled seat especially for hot water applications. In this case, the dimensions of the H12N rotating unit are modified. Seal designation: H127G115. Please inquire.
Click image to enlarge
d1 |
d2 |
d3 |
d6 |
d7 |
d8 |
d21 |
d22 |
db |
l1N |
l1 |
l2 |
l3 |
l5 |
l6 |
l7 |
l8 |
l9 |
l18 |
l19 |
l39 |
l40 |
a |
b |
e |
h1 |
h2 |
k |
b*) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 10 | 14 | 24 | 17 | 21 | 3 | – | – | 18 | 50 | 35.5 | 18 | 25.5 | 1.5 | 4 | 8.5 | 17.5 | 10.0 | – | – | – | – | – | 5 | – | – | – | – | 8.0 |
| 12 | 16 | 26 | 19 | 23 | 3 | – | – | 21 | 50 | 36.5 | 18 | 26.5 | 1.5 | 4 | 8.5 | 17.5 | 10.0 | – | – | – | – | – | 5 | – | – | – | – | 8.0 |
| 14 | 18 | 31 | 21 | 25 | 3 | – | – | 23 | 55 | 39.5 | 18 | 29.5 | 1.5 | 4 | 8.5 | 17.5 | 10.0 | – | – | – | – | – | 6 | – | – | – | – | 8.0 |
| 16 | 20 | 34 | 23 | 27 | 3 | – | – | 26 | 55 | 41.0 | 18 | 31.0 | 1.5 | 4 | 8.5 | 17.5 | 10.0 | – | – | – | – | – | 6 | – | – | – | – | 8.0 |
| 18 | 22 | 36 | 27 | 33 | 3 | – | – | 28 | 55 | 44.0 | 20 | 32.5 | 2.0 | 5 | 9.0 | 19.5 | 11.5 | 15 | 7 | – | – | – | 6 | – | – | – | – | 8.0 |
| 20 | 24 | 38 | 29 | 35 | 3 | – | – | 30 | 60 | 44.0 | 20 | 32.5 | 2.0 | 5 | 9.0 | 19.5 | 11.5 | 15 | 7 | – | – | – | 6 | – | – | – | – | 8.0 |
| 22 | 26 | 40 | 31 | 37 | 3 | – | – | 31 | 60 | 44.0 | 20 | 32.5 | 2.0 | 5 | 9.0 | 19.5 | 11.5 | 15 | 7 | – | – | – | 6 | – | – | – | – | 8.0 |
| 24 | 28 | 42 | 33 | 39 | 3 | – | – | 35 | 60 | 44.0 | 20 | 32.5 | 2.0 | 5 | 9.0 | 19.5 | 11.5 | 15 | 7 | – | – | – | 6 | – | – | – | – | 8.0 |
| 25 | 30 | 44 | 34 | 40 | 3 | – | – | 37 | 60 | 45.0 | 20 | 33.5 | 2.0 | 5 | 9.0 | 19.5 | 11.5 | 15 | 7 | – | – | – | 6 | – | – | – | – | 8.0 |
| 28 | 33 | 47 | 37 | 43 | 3 | 44.65 | 50.57 | 40 | 65 | 47.0 | 20 | 35.5 | 2.0 | 5 | 9.0 | 19.5 | 11.5 | 15 | 7 | 24 | 8.5 | 24 | 6 | 8 | 6.6 | 22.6 | 9 | 8.0 |
| 30 | 35 | 49 | 39 | 45 | 3 | 47.83 | 53.75 | 43 | 65 | 47.0 | 20 | 35.5 | 2.0 | 5 | 9.0 | 19.5 | 11.5 | 15 | 7 | 24.5 | 9.0 | 24 | 6 | 8 | 6.6 | 22.6 | 9 | 8.0 |
| 32 | 38 | 54 | 42 | 48 | 3 | 47.83 | 53.75 | 45 | 65 | 51.0 | 20 | 39.5 | 2.0 | 5 | 9.0 | 19.5 | 11.5 | 15 | 7 | 24.5 | 9.0 | 24 | 6 | 8 | 6.6 | 22.6 | 9 | 7.5 |
| 33 | 38 | 54 | 42 | 48 | 3 | 47.83 | 53.75 | 45 | 65 | 51.0 | 20 | 39.5 | 2.0 | 5 | 9.0 | 19.5 | 11.5 | 15 | 7 | 24.5 | 9.0 | 24 | 6 | 8 | 6.6 | 22.6 | 9 | 7.5 |
| 35 | 40 | 56 | 44 | 50 | 3 | 51 | 56.92 | 49 | 65 | 55.0 | 20 | 43.5 | 2.0 | 5 | 9.0 | 19.5 | 11.5 | 15 | 7 | 24.5 | 9.0 | 24 | 6 | 8 | 6.6 | 22.6 | 9 | 8.0 |
| 38 | 43 | 59 | 49 | 56 | 4 | 54.18 | 60.10 | 52 | 75 | 60.0 | 23 | 46.0 | 2.0 | 6 | 9.0 | 22.0 | 14.0 | 16 | 8 | 26 | 11 | 24 | 6 | 8 | 6.6 | 22.6 | 9 | 7.5 |
| 40 | 45 | 61 | 51 | 58 | 4 | 60.53 | 66.45 | 55 | 75 | 62.0 | 23 | 48.0 | 2.0 | 6 | 9.0 | 22.0 | 14.0 | 16 | 8 | 26 | 11 | 24 | 6 | 8 | 6.6 | 22.6 | 9 | 8.0 |
| 43 | 48 | 64 | 54 | 61 | 4 | 63.7 | 69.62 | 58 | 75 | 65.0 | 23 | 51.0 | 2.0 | 6 | 9.0 | 22.0 | 14.0 | 16 | 8 | 26 | 11 | 24 | 6 | 8 | 6.6 | 22.6 | 9 | 8.0 |
| 45 | 50 | 66 | 56 | 63 | 4 | 63.7 | 69.62 | 61 | 75 | 69.0 | 23 | 55.0 | 2.0 | 6 | 9.0 | 22.0 | 14.0 | 16 | 8 | 26 | 11 | 24 | 6 | 8 | 6.6 | 22.6 | 9 | (8) |
| 48 | 53 | 69 | 59 | 66 | 4 | 66.88 | 72.80 | 64 | 85 | 69.0 | 23 | 55.0 | 2.0 | 6 | 9.0 | 22.0 | 14.0 | 16 | 8 | 26 | 11 | 24 | 8 | 8 | 6.6 | 22.6 | 9 | 8.0 |
| 50 | 55 | 71 | 62 | 70 | 4 | 70.05 | 75.97 | 66 | 85 | 73.0 | 25 | 58.0 | 2.5 | 6 | 9.0 | 23.0 | 15.0 | 17 | 9.5 | 26.5 | 12.5 | 24 | 8 | 8 | 6.6 | 22.6 | 9 | 8.0 |
| 53 | 58 | 78 | 65 | 73 | 4 | 76.4 | 82.32 | 69 | 85 | 75.0 | 25 | 60.0 | 2.5 | 6 | 9.0 | 23.0 | 15.0 | 17 | 9.5 | 26.5 | 12.5 | 24 | 8 | 8 | 6.6 | 22.6 | 9 | 8.0 |
| 55 | 60 | 79 | 67 | 75 | 4 | 76.4 | 82.32 | 71 | 85 | 75.0 | 25 | 60.0 | 2.5 | 6 | 9.0 | 23.0 | 15.0 | 17 | 9.5 | 28.5 | 12.5 | 26 | 8 | 8 | 6.6 | 24.6 | 11 | 8.0 |
| 58 | 63 | 83 | 70 | 78 | 4 | 79.58 | 85.50 | 74 | 85 | 75.0 | 25 | 60.0 | 2.5 | 6 | 9.0 | 23.0 | 15.0 | 18 | 10.5 | 28.5 | 12.5 | 26 | 8 | 8 | 6.6 | 24.6 | 11 | 8.0 |
| 60 | 65 | 85 | 72 | 80 | 4 | 82.75 | 88.67 | 77 | 95 | 75.0 | 25 | 60.0 | 2.5 | 6 | 9.0 | 23.0 | 15.0 | 18 | 10.5 | 28.5 | 12.5 | 26 | 8 | 8 | 6.6 | 24.6 | 11 | 8.0 |
| 63 | 68 | 88 | 75 | 83 | 4 | 85.93 | 91.85 | 80 | 95 | 75.0 | 25 | 60.0 | 2.5 | 6 | 9.0 | 23.0 | 15.0 | 18 | 10.5 | 28.5 | 12.5 | 26 | 8 | 8 | 6.6 | 24.6 | 11 | 8.0 |
| 65 | 70 | 90 | 77 | 85 | 4 | 85.93 | 91.85 | 83 | 95 | 76.0 | 25 | 61.0 | 2.5 | 6 | 9.0 | 23.0 | 15.0 | 18 | 10.5 | 28.5 | 12.5 | 26 | 8 | 8 | 6.6 | 24.6 | 11 | 10.0 |
| 70 | 75 | 98 | 83 | 92 | 4 | 89.1 | 95.02 | 88 | 95 | 81.0 | 28 | 63.0 | 2.5 | 7 | 9.0 | 26.0 | 18.0 | 19 | 11.5 | 30.5 | 14.5 | 26 | 8 | 8 | 6.6 | 24.6 | 11 | 10.0 |
| 75 | 80 | 103 | 88 | 97 | 4 | 98.63 | 104.55 | 93 | 105 | 86.0 | 28 | 68.0 | 2.5 | 7 | 9.0 | 26.0 | 18.0 | 19 | 11.5 | 30.5 | 14.5 | 26 | 10 | 8 | 6.6 | 24.6 | 11 | 10.0 |
| 80 | 85 | 109 | 95 | 105 | 4 | 101.8 | 107.72 | 98 | 105 | 86.0 | 28 | 68.0 | 3.0 | 7 | 9.0 | 26.2 | 18.2 | 19 | 11.5 | 30.2 | 14 | 26 | 10 | 8 | 6.6 | 24.6 | 11 | 10.0 |
*) l~1N~ acc. to EN 12756 is exceeded.