BSM7N/BSM7F
Paramter
Temperature:-30C~200C
Pressure: ≤1.6Mpa
Linear Velocity: ≤20m/s
Rotary face: CARBON/SIC/SSIC/TC 
Stationary ring: CERAMIC/SIC/SSIC/TC 
Secondary sealing: NBR/EPDM/VITON/FEP/TTV
Metal parts: 304/316
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