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, CVU Packing, Higher Profile Design, Low Pressure Packing Set, Higher Flexibility, Easy Compression, Piston Seal, Shaft Seal
The 825 series CVU features a higher-profile design with thinner “legs”, enabling sealing at lower compression levels. This design exhibits enhanced flaring action compared to the 625 series, attributable to the reduced wall thickness of each ring.
The initial seal is achieved at even lower pressures than the 625 series, facilitating efficient sealing performance. The multiple angles incorporated into the 825 series accommodates cold flow, providing increased leverage under compression.
Although this taller packing set requires fewer rings to fill the stuffing box, resulting in fewer sealing edges, its flexibility offers greater adjustability. The additional angles within the packing set create increased voids, further enhancing adjustability and facilitating optimal sealing performance.
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 |
| 5000 and Higher | 1 | 6-7 | 1 |
*Pressure rating and number of rings is dependent on the application and is subject to change.