COMPONENTS & SOLUTIONS FOR FLUID HANDLING

DESCRIPTION

The MTM250 series of cartridge mechanical seals has been specially designed to be installed on rotary machines as fast as compressors and turbines. It can be realized in different materials, both for the sliding faces and structural materials and it is able to withstand speeds up to 32 m / s. It is available from diameter 40 up to 200mm and it is today mainly used on screw compressors in presence of lubrication. Its design has been optimized thanks to the testing done directly on the field with one of the major manufacturers in the industry, following out the API 619 norm. Today it is used for pumping gas, such as propane, methane, butane and major hydrocarbons. The structure of the MTM250 cartridge mechanical seal is a double type structure with an external safety sealing, SafetyMTM, which becomes the third seal in case of failure of the two main seals.

Operating limits:

D= 1.5” to 7.8”
P1= up to 232 PSI
T= - 40 °F to + 428 °F
V= up to 104 ft / s
Vacuum = up to 7.25 PSI
Axial movement + / - 2.0 mm

Elastomers:

Viton
Ethylene propylene
Nitrile
Silicon
Kalrez
Chemraz
FEP
Memory Lip PTFE
Wrapped PTFE

Face materials:

Silicon carbide
Tungsten carbide
Carbon graphite antimony
Carbon graphite resin
SS316
SAF
Hastelloy
Inconel

Technical Drawing

Components

1. Flange
2. Safety seal
3. Locking ring
4. Rotary ring
5. Rotary ring
6. O-ring
7. O-ring
8. Stationary ring
9. Spring
10. Sleeve
11. O-ring
12. O-ring
13. Stationary ring
14. O-ring
15. Spring holder
16. O-ring
17. Spring
18. Locking ring
19. O-ring
20. O-ring
21. O-ring
22. Spring holder

Recommended applications

Compressors API 619
Refinery industry
Hydrocarbons
LP gas

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