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Description
Supagraf® exfoliated graphite in easy-to-use textured tape form. Can be supplied with self-adhesive backing.
Typical applications
A widely used maintenance expedient for winding around a valve stem then compressing into the stuffing box. Suitable for use in many industries with valves handling high-temperature steam, demineralised water, potable water, heat transfer media, petroleum products, inorganic and organic acids, alkalis, hot waxes and oils. Version with self-adhesive backing can also be used as an emergency gasket replacement.
Specifications (plain Supagraf®)
Prime features
Chemical properties
Chemically inert within the range pH 0-14. Extractable chloride ion content typically 25ppm, sulphur <100ppm for standard grade. Chloride ion content <10ppm, sulphur <60ppm for Nuclear Grade.
No loss of volatiles, even at high temperatures. Lower limiting temperatures may apply when used with oxidising agents such as nitric, sulphuric or chromic acid.
Physical properties
Carbon content, % : 98 minimum
Density, g/cm³ : 0.7
Coefficient of friction to steel : 0.05
Service capabilities - valve stem duties
Maximum operating temperatures: +500°C.
Minimum operating temperature: -200°C.
Maximum system pressure: 70bar.
How supplied
Ex-stock in convenient cassettes for product protection and ease of dispensing. 0.5mm thick tape: 10mm wide by 10m long, 15mm x 10m, 20mm x 15m, 25mm x 15m. Also available with self-adhesive backing.
Click here to download the Compression Packing Guide pdf (2.17MB)
