Using the highest quality fiber materials and world-class needling techniques and equipment, HL Filter manufactures a wide range of Polyphenylene sulfide (PPS) needle felts (also called Ryton) with high dust-holding capacity and good air permeability. Their good resistance to hydrolysis, alkalies and acids makes them an alternative to PTFE fibers under certain conditions. They are easily oxidised at increased temperature.
Bulk Roll Goods: weight, thickness, density, roll width, and roll length are customized at your request.
High termperature needle punched felt
Excellent chemical resistance (except for oxidation)
Ability to operate effectively on applications with O₂ content up to 9%.
Works well in high moisture content applications and where dew point crossings are common.
This media is suited for applications where emissions standards are tight.
Continuous operating temperature 374℉ (190°C)
|Fiber Materials||PPS-Polyphenylene Sulfide|
| Standard Finish Options |
(Special surface treatments available)
|Heat Set, Singed, Glazed, PTFE membrane, Water and oil proof|
| Weight |
| Air Permeability |
CFM@ ½" W.G125PA
| Tensile Strength |
|Warp MD||103 (900)|
|Weft CD||137 (1200)|
|Tensile Elongation (%)||Warp MD||≤25|
|Thermal Shrinkage (%) at max continuous temp.||Warp MD||≤1|
|Max. Operating Temperature oF (oC)||Continuous||374(190)|
| The data are based on laboratory conditions. |
Testing based on specific operating conditions of each installation is recommended.
Paper, Pulp & Woodworking
Cement, Mining & Rock Products
Asphalt & Aggregate
Chemicals & Pharmaceuticals
Metals & Foundry
Food & Beverages
Custom OEM Applications
Most commonly used in the applications: coal-fired boilers, incinerators, fluidized bed systems, cement mills, oil and gas firings
asphalt plants and pulverized coal injection systems
Customized per order