Polyphenylene Sulfide (PPS) Needle Felts Polyphenylene Sulfide (PPS) Needle Felts

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.

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  • Product Description
  • Specifications
  • Applications
  • Ordering Information

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
Scrim PPS
Standard Finish Options
(Special surface treatments available)
Heat Set, Singed, Glazed, PTFE membrane, Water and oil proof
oz/yd² (g/m2)
11.80-19.17 (400-650)

   Inch (mm)
0.051-0.071 (1.3-1.8)
Air Permeability
 CFM@ ½" W.G125PA
 (m³/m².min@200PA )
21-33 (10-16)
  Tensile Strength
 lb/in (N/5CM)
Warp MD  103 (900)
Weft CD 137 (1200)
Tensile Elongation (%) Warp MD  ≤25
Weft CD ≤45
Thermal Shrinkage (%) at max continuous temp. Warp MD  ≤1
Weft CD ≤1.5
Max. Operating Temperature  oF (oC) Continuous 374(190)
Surge 392(200)
The data are based on laboratory conditions. 
Testing based on specific operating conditions of each installation is recommended.

Power Generation

Paper, Pulp & Woodworking

Cement, Mining & Rock Products

Asphalt & Aggregate

Waste Incineration

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