High Pressure Self-Sealing Valve Packing, Graphite, 20*30 mm

Product Name: Class 2500 LB Self-Sealing Forged Valve Packing Set, Low Emission
Inner Diameter (ID): 20 mm
Outer Diameter (OD): 30 mm
Number of Packing Rings: 7 Rings
Material Properties:
Graphite Purity: ≥99%
Metal Wire Content: 20% (Inconel 600 or Inconel 625)
Sulfur Content: ≤50 PPM
Chlorine Content: ≤20 PPM
Speed: 2 m/s
pH Value: 0 to 14
Pressure: 25 MPa
Certifications: TA-Luft, ISO 15848, API 589 (Fire Safe)
Temperature Range:
-200°C to +400°C (for most media)
-200°C to +550°C (for steam)
Media: solvents, hydrocarbons, acids, alkalis, steam, alcohol, oil

Product Features

Preventing stem binding in pneumatic control valves caused by overloading of gland bolts.
Provides a buffering function that absorbs impact forces generated during stem movement.
Suitable for low-emission applications in gate valves, globe valves, and ball valves conforming to API 600 and API 6D standards.