Product number:
P638LP0170017001
thoenes ® P638 - Polyimide-PTFE-Graphite Packing
€82.24
Delivery time: 3-4 weeks
Technical details
- Max. continuous temp.
- 230–260 °C (polyimide); 250 °C (graphite-filled PTFE)
- Short-term temp.
- 300–400 °C (polyimide, clear shrinking from 300 °C); 280 °C (PTFE)
- Pumps (p / vg)
- 25 bar / 20.0 m/s
- Pistons (p / vg)
- 250 bar / 2.0 m/s
- Valves (p / vg)
- 150 bar
If the quantity differs, please send an inquiry.
Selected: 17 x 17 mm · quadratic · Item no. P638LP0170017001
Product information "thoenes ® P638 - Polyimide-PTFE-Graphite Packing"
The thoenes ® P638 – polyimide-PTFE-graphite packing is manufactured from alternating layers of graphite-filled PTFE multifilament fibres and polyimide continuous filament fibres.
Key properties :
- Good sliding properties,
- Pressure-resistant,
- Good resistance to organic solvents; fuels, lubricants and waste water,
- Polyimide fibres have good acid resistance,
- Not resistant to highly concentrated alkalis, alkali metals; fluorine compounds at high temperatures.
Polyimide fibre
- Max. continuous temperature 230 – 260 °C,
- Short-term exposure to 300 – 400 °C possible,
- Significant shrinkage from 300 °C.
Graphite-filled PTFE multifilament fibre
- Max. continuous temperature 250 °C,
- Short-term exposure to 280 °C possible.
Fields of application :
- Centrifugal and piston pumps,
- Valves and mixers,
- Agitators and reactors.
Supply forms :
- Square or rectangular packing,
- Zebra braiding,
- Dimensions: 4–25 mm (other dimensions on request).
