Graphite Sealing Products
NA 707 - Flexible Graphite Packing Ring
Flexible graphite moulded packing rings
- Made by compressing spirally wrapped graphite tapes
- High purity of graphite with low chloride, sulphur, fluoride, ash content etc with no binders
- Self-lubricating packing with extremely low friction characteristics
- Passed fugitive emissions tests as per Shell SPE MESC 77/312 (as Intermediate Rings with NA 701 packing), Class B
- Nuclear grade on request
Available in endless, 2 halves oblique cut, single oblique cut
| Service Media and Conditions | Superheated and saturated steam, all non-oxidising liquids and gases, hydrocarbons, dyes and chemicals, fuel oil and lube oil etc |
| Temperature | -240°C to 540°C |
| Pressure | 350 bar (static), 20 bar (rotary) |
| Shaft Speed | 5 m/sec (rotary) |
| pH | 0 to 14 |
| Applications | Valves |