25 MPa Valve Stem Packing, Expanded Graphite, Carbon Fiber

Aug 07, 2025

Product Name: Graphite/Carbon Fiber Packing, Valve Stem Packing
Material: Expanded Graphite, Carbon Fiber Yarn (Corner)
Size: 6.5-50 mm (1/4-2 Inch)
Pressure: 25 MPa / 250 bar
PH: 0-14
Temperature Range: -50°C to 450°C
Applications: Pumps, Valves, Autoclaves, Converters, Mixers, Reactors
Suitable Media: Steam, Acids and alkalis, Hydrocarbons, Fuel and lubricating oils, etc.

Key Features

High-Temperature Performance: Designed for high working temperatures in corrosive environments.
Enhanced Durability: Carbon fibre corners provide superior abrasion and wear resistance.
Dry-Running Capability: Excellent performance in dry-running conditions reduces dependency on water flushing.
Adaptive Sealing: Conforms well to worn or pitted surfaces, ensuring reliable sealing under adverse conditions.
Corrosion Protection: Inorganic corrosion inhibitors prevent galvanic corrosion at metallic interfaces.

The packing is a high-performance packing combining the superior sealing properties of expanded high-purity 99% graphite yarn with the mechanical strength of carbon fiber yarn at its four corners. Impregnated with graphite-based high-temperature dispersion and an inorganic corrosion inhibitor, this packing is engineered for demanding applications involving heat, chemicals, and abrasive media.