MTM120

Operative limits

Product description

Single mechanical seal, unbalanced, independent of the direction of rotation, with single leaf spring; it is manufactured in accordance to UNI EN 12756 (ex DIN 24960) standard. Its versatility in the variety of materials and the design of the leaf spring, allows it to be widely used not only on heavy duty machines at medium pressure but also in presence of highly viscous liquid. It is available in different configurations. The high torsion resistance and the small working lenght make it of universal application. It is available in multispring configuration as well.

Available stationary rings

S6
S9
S11
S16

Operative limits

d = from 20 mm (0,78 mm) fino 200 mm (7,87″) *
p1 = 16 bar (232 PSI)
T = from -40°C (-40°F) to +220°C (+428°F)
vg = 20 m/s (66 ft/s)
Axial movement (d<100) : +/-1,0 mm Axial movement (d>100) : +/- 2,0 mm
* Available in inches too

Standard face materials

Rotary face:
resin/antimony carbon (G/G1/G2/G3)
silicon carbide (S/S1)
tungsten carbide (T/T1)

Stationary face:
silicon carbide (S/S1)
tungsten carbide (T/T1)

Elastomers

NBR / Nitrile (N)
EPDM / Ethilene propylene (E)
FKM / Viton® (V)
FFKM / Kalrez®, Chemraz® (K)

Applications

Water and sewage water pumps
Process industry
Chemical industry
Food and beverage industry
Refinery industry
Power plant industry
Centrifugal pumps
Marine pumps
Fuel oil pumps
Lube oil pumps
Screw pumps
Gear pumps
Lube compressors
Low solids content
High viscosity
Special rotating equipment

MTM120

Part list

1. Rotary case
2. Compression ring
3. Spring
4. Rotary ring
5. O-ring
6. Grub screw
7. Stationary ring
8. O-ring
9. Pin

Product description

Single mechanical seal, unbalanced, independent of the direction of rotation, with single leaf spring; it is manufactured in accordance to UNI EN 12756 (ex DIN 24960) standard. Its versatility in the variety of materials and the design of the leaf spring, allows it to be widely used not only on heavy duty machines at medium pressure but also in presence of highly viscous liquid. It is available in different configurations. The high torsion resistance and the small working lenght make it of universal application. It is available in multispring configuration as well.

Available stationary rings

S6
S9
S11
S16

Part list

1. Rotary case
2. Compression ring
3. Spring
4. Rotary ring
5. O-ring
6. Grub screw
7. Stationary ring
8. O-ring
9. Pin

Standard face materials

Rotary face:
resin/antimony carbon (G/G1/G2/G3)
silicon carbide (S/S1)
tungsten carbide (T/T1)

Stationary face:
silicon carbide (S/S1)
tungsten carbide (T/T1)

Elastomers

NBR / Nitrile (N)
EPDM / Ethilene propylene (E)
FKM / Viton® (V)
FFKM / Kalrez®, Chemraz® (K)

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