Click image to enlarge
| Item | Part no.DIN 24250 | Description |
|---|---|---|
| 1.1 | 472/481 | Seal face with bellows unit |
| 1.2 | 412.1 | O-Ring |
| 1.3 | 904 | Set screw |
| 2 | 475 | Seat (G9) |
| 3 | 412.2 | O-Ring |
MFL85N
Features
- For unstepped shafts
- Single seal
- Balanced
- Independent of direction of rotation
- Metal bellows rotating
Advantages
- For extreme temperature ranges
- No dynamically loaded O-Ring
- Self cleaning effect
- Short installation length possible
- Pumping screw for highly viscous media available (dependent on direction of rotation).
Operating range
Shaft diameter:
d1 = 16 … 100 mm (0.63" … 4“)
Externally pressurized:
p1 = … 25 bar (363 PSI)
Internally pressurized:
p1 <120 °C (248 °F) 10 bar (145 PSI)
p1 <220 °C (428 °F) 5 bar (72 PSI)
Temperature: t = -40 °C … +220 °C
(-40 °F … 428) °F,
Stationary seat lock necessary.
Sliding velocity: vg = 20 m/s (66 ft/s)
Materials
Seal face: Carbon graphite antimony impregnated (A), Silicon carbide (Q12)
Seat: Silicon carbide (Q1)
Bellows: Inconel® 718 hardened (M6), Hastelloy® C-276 (M5)
Metal parts: CrNiMo steel (G), Duplex (G1), Hastelloy® C-4 (M)
Standards and approvals
- EN 12756
Recommended applications
- Hot media
- Cold media
- Highly viscous media
- Process industry
- Oil and gas industry
- Refining technology
- Petrochemical industry
- Chemical industry
- Pumps
- Special rotating equipment
Product variants
MFL90N
Shaft diameter:
d1 = 20 … 100 mm (0.79" … 4“)
Internally pressurized:
p1 = … 16 bar (232 PSI),
stationary seat lock necessary.
Externally pressurized:
p1 = 10 bar (145 PSI)
Temperature:
t = -40 °C … +220 °C (-40 °F … +428 °F)
Sliding velocity: vg = 20 m/s (66 ft/s)
MFL85P / MFL90P
Version with pumping ring. Dependent on direction of rotation. Can be retrofitted.
MFL85F
Dimensions, items and description as for MFL85N, but with pumping screw (item no. 1.4). Dependent on direction of rotation. The pumping screw can be retrofitted.
Click image to enlarge
G16
(l1k shorter than specified by EN 12756)
Click image to enlarge
d1 |
d3 |
d6 |
d7 |
d8 |
ds |
l1K |
l3 |
l5 |
l6 |
l8 |
l9 |
l18 |
l19 |
b |
s |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 16 | 30.0 | 23 | 27 | 3 | 38 | 42.5*) | 32.5 | 1.5 | 4 | 17.5 | 10.0 | – | – | 1.6 | 9.0 |
| 18 | 32.0 | 27 | 33 | 3 | 39 | 42.0 | 30.5 | 2.0 | 5 | 14.0 | 11.5 | 15.0 | 7.0 | 1.6 | 10.0 |
| 20 | 33.5 | 29 | 35 | 3 | 41 | 42.0 | 30.5 | 2.0 | 5 | 14.0 | 11.5 | 15.0 | 7.0 | 1.6 | 10.0 |
| 22 | 36.5 | 31 | 37 | 3 | 44 | 37.5 | 30.5 | 2.0 | 5 | 14.0 | 11.5 | 15.0 | 7.0 | 1.6 | 10.0 |
| 24 | 39.0 | 33 | 39 | 3 | 47 | 40.0 | 28.5 | 2.0 | 5 | 19.5 | 11.5 | 15.0 | 7.0 | 1.6 | 8.2 |
| 25 | 39.6 | 34 | 40 | 3 | 48 | 40.0 | 28.5 | 2.0 | 5 | 19.5 | 11.5 | 15.0 | 7.0 | 1.6 | 8.5 |
| 28 | 42.8 | 37 | 43 | 3 | 51 | 42.5 | 31.0 | 2.0 | 5 | 19.5 | 11.5 | 15.0 | 7.0 | 1.6 | 9.0 |
| 30 | 45.0 | 39 | 45 | 3 | 53 | 42.5 | 31.0 | 2.0 | 5 | 19.5 | 11.5 | 15.0 | 7.0 | 1.6 | 8.5 |
| 32 | 46.0 | 42 | 48 | 3 | 55 | 42.5 | 31.0 | 2.0 | 5 | 19.5 | 11.5 | 15.0 | 7.0 | 1.6 | 9.2 |
| 33 | 48.0 | 42 | 48 | 3 | 56 | 42.5 | 31.0 | 2.0 | 5 | 19.5 | 11.5 | 15.0 | 7.0 | 1.6 | 9.2 |
| 35 | 49.2 | 44 | 50 | 3 | 58 | 42.5 | 31.0 | 2.0 | 5 | 19.5 | 11.5 | 15.0 | 7.0 | 1.6 | 9.5 |
| 38 | 52.3 | 49 | 56 | 4 | 61 | 45.0 | 31.0 | 2.0 | 6 | 22.0 | 14.0 | 16.0 | 8.0 | 1.6 | 9.2 |
| 40 | 55.5 | 51 | 58 | 4 | 64 | 45.0 | 31.0 | 2.0 | 6 | 22.0 | 14.0 | 16.0 | 8.0 | 1.6 | 9.2 |
| 43 | 57.5 | 54 | 61 | 4 | 67 | 45.0 | 31.0 | 2.0 | 6 | 22.0 | 14.0 | 16.0 | 8.0 | 1.6 | 9.2 |
| 45 | 58.7 | 56 | 63 | 4 | 69 | 45.0 | 31.0 | 2.0 | 6 | 22.0 | 14.0 | 16.0 | 8.0 | 1.6 | 9.5 |
| 48 | 61.9 | 59 | 66 | 4 | 72 | 45.0 | 31.0 | 2.0 | 6 | 22.0 | 14.0 | 16.0 | 8.0 | 1.6 | 9.2 |
| 50 | 65.0 | 62 | 70 | 4 | 74 | 47.5 | 32.5 | 2.5 | 6 | 23.0 | 15.0 | 17.0 | 9.5 | 1.6 | 10.5 |
| 53 | 68.2 | 65 | 73 | 4 | 77 | 47.5 | 32.5 | 2.5 | 6 | 23.0 | 15.0 | 17.0 | 9.5 | 1.6 | 10.5 |
| 55 | 70.0 | 67 | 75 | 4 | 80 | 47.5 | 32.5 | 2.5 | 6 | 23.0 | 15.0 | 17.0 | 9.5 | 1.6 | 10.0 |
| 58 | 71.7 | 70 | 78 | 4 | 83 | 52.5 | 37.5 | 2.5 | 6 | 23.0 | 15.0 | 18.0 | 10.5 | 3.0 | 14.0 |
| 60 | 74.6 | 72 | 80 | 4 | 85 | 52.5 | 37.5 | 2.5 | 6 | 23.0 | 15.0 | 18.0 | 10.5 | 3.0 | 14.0 |
| 63 | 79.0 | 75 | 83 | 4 | 88 | 52.5 | 37.5 | 2.5 | 6 | 23.0 | 15.0 | 18.0 | 10.5 | 3.0 | 14.0 |
| 65 | 84.1 | 77 | 85 | 4 | 95 | 52.5 | 37.5 | 2.5 | 6 | 23.0 | 15.0 | 18.0 | 10.5 | 3.0 | 14.0 |
| 68 | 87.3 | 81 | 90 | 4 | 96 | 52.5 | 34.5 | 2.5 | 7 | 26.0 | 18.0 | 18.5 | 11.0 | 1.6 | 10.0 |
| 70 | 87.3 | 83 | 92 | 4 | 96 | 60.0 | 42.0 | 2.5 | 7 | 26.0 | 18.0 | 19.0 | 11.5 | 3.0 | 17.0 |
| 75 | 95.0 | 88 | 97 | 4 | 104 | 60.0 | 42.0 | 2.5 | 7 | 26.0 | 18.0 | 19.0 | 11.5 | 3.0 | 16.0 |
| 80 | 98.4 | 95 | 105 | 4 | 109 | 60.0 | 41.8 | 3.0 | 7 | 26.2 | 18.2 | 19.0 | 11.5 | 3.0 | 16.0 |
| 85 | 104.7 | 100 | 110 | 4 | 114 | 60.0 | 41.8 | 3.0 | 7 | 26.2 | 18.2 | 19.0 | 11.5 | 3.0 | 16.0 |
| 90 | 111.0 | 105 | 115 | 4 | 119 | 65.0 | 46.8 | 3.0 | 7 | 26.2 | 18.2 | 20.5 | 13.0 | 3.0 | 21.0 |
| 95 | 114.0 | 110 | 120 | 4 | 124 | 65.0 | 47.8 | 3.0 | 7 | 25.2 | 17.2 | 20.5 | 13.0 | 3.0 | 21.0 |
| 100 | 117.4 | 115 | 125 | 4 | 129 | 65.0 | 47.8 | 3.0 | 7 | 25.2 | 17.2 | 20.5 | 13.0 | 3.0 | 20.0 |
Dimensions in millimeter * Installation length is longer than l~1k~ specified by EN 12756