Operating Temps: Unfilled 100% Virgin PTFE -110° F to 500° F
Available Materials: Virgin PTFE, Glass Filled PTFE, Carbon Filled PTFE, Bronze Filled PTFE, Moly/Glass Filled PTFE, Modified PTFE (TFM)
Packaging: Bulk or Sets
Tags: PTFE Packing Set, Round Top Packing, Medium Height, Easy Flare, Pump Seals, Piston Seal, Shaft Seal
The 625 series features a higher-profile design that optimizes the packing configuration by reducing the number of rings required to occupy a stuffing box. The rounded apex of each ring induces radial flaring of the adjacent ring’s lips, thereby establishing a reliable seal.
The substantial void areas integral to this design accommodate thermal expansions, mitigating the potential for binding. The typically thicker edges of this design confer increased rigidity to the set. Variations in interference angles influence the flaring behavior, allowing for greater flexibility before the rings become fully compressed and solid. While this design exhibits increases resistance to compression, it also provides enhanced flaring action.
This series is primarily employed in applications such as flow control or self-monitoring valves, stem
packings, ball valves, with identical temperature ratings spanning from -100F to 500F.
Heights are infinitely adjustable per customer request, without any need for tooling charges.
Pressure Ranges and Recommended Number of Rings per Packing Set*
| Pressure Range | Female Rings | V-Ring Packing Sets | Male Rings |
|---|---|---|---|
| 0-500 | 1 | 3-4 | 1 |
| 501-2000 | 1 | 4-5 | 1 |
| 2001-5000 | 1 | 5-6 | 1 |
| 5001 and Higher | 1 | 6-7 | 1 |
*Pressure rating and number of rings is dependent on the application and is subject to change.