1. material: PTFE, SS, ceramic 2. termperature: -20-120C 3. press in chamber: <1.0Mpa 4. linear velocity: <15m/s Standard BIA water Mechanical Seal 1. Mostly use: oil, water, and other low corrosion liquids 2. stationary ring: ceramic, SIC, TC3. rotary: carbob, SIC, TC4. secondary seal: NBR, EPDM, VITON5. spring and other parts: SUS304, SUS316 standard BIA water mechanical seal