Packing type 645
Characteristics:
Packing of expanded pure graphite yarn with cotton core, additionally impregnated with PTFE. Due to its thermal and chemical resistance, self-lubricating properties and good thermal conductivity, expanded graphite is perfect for high temperature braided packings used in both rotodynamic pumps and in fittings. Addition of PTFE reduces permissible working temperature but it improves friction coefficient and improves cohesion, which facilitates mounting in stuffing boxes of pumps.
Application:
Recommended for use in stuffing boxes of pumps and fittings at temperatures up to 280 °C, with water, steam, oils, solvents, salts, acids and alkalis, with exception of strong oxidants. Not recommended for use with abrasive media.
| pH | Max.temp [oC] | Rotodynamic pumps | Piston pumps |
Fittings | Dimension range [mm] |
| 0-14 | -200 do +280 |
p = 25 bar v = 25 m/s |
not recommended |
p = 100 bar v = 2 m/s |
6 - 25 |
All information in this catalogue is based on years of experience in manufacture and use of the discussed products. Since sealing performance in the joint is subject to multiple factors such as mounting method, system parameters, and sealed medium, technical parameters specified herein are of informative nature only and cannot be used as grounds for any claims; any special uses of products are subject to consulting with the manufacturer.