Material 1. Bellows: AM350,alloy 20, 316 2. Metal Parts:300 series stainless steel 3. Seal Face:tungsten carbide,carbon,silicon carbide 4. Packings: Viton,EPR,Teflon, NBR. Operating Limits 1. Temperature -75C~200C 2. Pressure: vacuum to 2.0Mpa vacuum to 6.0Mpa (double bellow) 3. Speed:125MPs 4. Sealed medium: water, oil, organic solvent and weak corrosive solvent. Applications: 1. High temperature medium pumps 2. Refining technology 3. Power plant technology 4. Chemical industry 5. Special rotating equipment. Carton box.