Metalgraf® packing is composed of layers of tape made of flexible expanded graphite twisted into compact threads. Each individual filament is reinforced with a mesh sleeve made of Inconel threads. This yarn is then treated following a special procedure and braided to form a compact but malleable packing. It is then treated with lubricating agents to reduce the wear on the shaft and with a corrosion inhibitor to prevent pitting corrosion.
Suitable for valves, for use in power stations, refineries, and in chemical and petrochemical industries.
– API 622 2018 allowable leakage PPMv The low-emission valve stem packing ideal for the petroleum and chemical process industries.
– API 622 29/5000 certificate
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