It is the most advanced mechanical seal alternative to the classic rubber bellows systems. The MTM905 propeller shaft mechanical seal is the first system designed for stern tube to combine the safety of the integrated pneumatic barrier Watershield®, with the technology of the split rings.
Thanks to its design, it is the world’s most compact split shaft seal with integrated safety barrier. The stationary case can accommodate up to 6 radial holes (optional) that can be used to connect: an additional flushing, a temperature sensor, a vibration sensor (triaxial), a pressure sensor or a dedicated vent line.
The stationary ring can be supplied in Silicon Carbide (S1) or in Tungsten Carbide (T1) and is expected to be inserted in a 316 stainless steel case.
The rotating ring is connected to the propulsion shaft with a clamp that drive radially the rotating case provided in 316 stainless steel with insert in Graphite Resin (G2), Graphite Antimony (G3), Silicon Carbide (S1) or Tungsten Carbide (T1).
Thanks to SpliTEM® technology, the sliding rings (stationary and rotating), made in two halves, allow maintenance to be carried out directly in the water and/or with the propulsion shaft in position, with a significant cost saving.
The pneumatic barrier ring Watershield®, integrated into the stationary case, makes the MTM905 the most technologically advanced product in the market for propeller shaft seals for tube installation.
The integrated preload system guarantees an extremely simple installation that does not require any particular specialization.
Suitable for all kind of vessels.
d = from 70 mm (2,7″) up to 215 mm (8,5″) *
p1 = 2 bar (29 psi)
T = from -30°C(-22°F) up to +90°C (194°F)
vg = 10 m/s (32 m/s)
Axial Movement : up to -6/+12 mm
Radial movement : up to +/- 5 mm
Angular movement : up to 2°
* Available in inches too
Rotary face:
Resin/antimony carbon (G2/G3)
Silicon carbide (S1)
Stationary face:
Silicon carbide (S1)
NBR / Nitrile (N)
EPDM / Ethilene propylene (E)
Yachts
Medium boats
Work boats
Patrol boats
Tugs
Passenger transport
Water-lubricated lines
Oil lubricated lines
Water jets
1. Rotary clamp
2. O-ring
3. Holder rotary insert
4. Spring
5. O-ring
6. Holder stationary insert
7. Rotary seal ring
8. Stationary seal ring
9. Pin
10. Screw
11. Rubber
12. O-ring
13. Stationary ring blocker
14. Screw
15. Screw
16. Screw
17. O-ring
18. O-ring
19. Valve
20. Nut
21. Stationary clamp
22. Screw
23. Stationary case
24. Inflatable elastomer
It is the most advanced mechanical seal alternative to the classic rubber bellows systems. The MTM905 propeller shaft mechanical seal is the first system designed for stern tube to combine the safety of the integrated pneumatic barrier Watershield®, with the technology of the split rings.
Thanks to its design, it is the world’s most compact split shaft seal with integrated safety barrier. The stationary case can accommodate up to 6 radial holes (optional) that can be used to connect: an additional flushing, a temperature sensor, a vibration sensor (triaxial), a pressure sensor or a dedicated vent line.
The stationary ring can be supplied in Silicon Carbide (S1) or in Tungsten Carbide (T1) and is expected to be inserted in a 316 stainless steel case.
The rotating ring is connected to the propulsion shaft with a clamp that drive radially the rotating case provided in 316 stainless steel with insert in Graphite Resin (G2), Graphite Antimony (G3), Silicon Carbide (S1) or Tungsten Carbide (T1).
Thanks to SpliTEM® technology, the sliding rings (stationary and rotating), made in two halves, allow maintenance to be carried out directly in the water and/or with the propulsion shaft in position, with a significant cost saving.
The pneumatic barrier ring Watershield®, integrated into the stationary case, makes the MTM905 the most technologically advanced product in the market for propeller shaft seals for tube installation.
The integrated preload system guarantees an extremely simple installation that does not require any particular specialization.
Suitable for all kind of vessels.
1. Rotary clamp
2. O-ring
3. Holder rotary insert
4. Spring
5. O-ring
6. Holder stationary insert
7. Rotary seal ring
8. Stationary seal ring
9. Pin
10. Screw
11. Rubber
12. O-ring
13. Stationary ring blocker
14. Screw
15. Screw
16. Screw
17. O-ring
18. O-ring
19. Valve
20. Nut
21. Stationary clamp
22. Screw
23. Stationary case
24. Inflatable elastomer
Rotary face:
Resin/antimony carbon (G2/G3)
Silicon carbide (S1)
Stationary face:
Silicon carbide (S1)
NBR / Nitrile (N)
EPDM / Ethilene propylene (E)
MICROTEM SRL
Via Valdilocchi 6
19126 La Spezia (Sp)
Phone. +39.0187.984276
Fax. +39.0187.911318
Mail. info@microtem.it
P.IVA 01220300113
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