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Polytetrafluoroethylene (PTFE) Needle Felts

PTFE (also called Telfon ) has excellent resistance to both acids and alkalis, restricted abrasion resistance, and has a maximum operating temperature of 500º F. The PTFE felts are costly due to an intensive production process. In return PTFE has an outstanding thermal and chemical stability.
Bulk Roll Goods: weight, thickness, density, roll width, and roll length are customized at your request.
  • Product Details

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Features & Benefits

Generally used for severe chemical environments at high temperatures

Excellent resistance to acids, alkalies, hydrolysis, oxidation, solvents 

Abrasion resistance is generally superior to protein fibers but not as good as most synthetics

Requires a 20 verticalwire minimum support cage when used in tubular bag form 

Expensive-excellent chemical and thermal resistance

Continuous operating temperature 500℉ (260°C)


Specifications

Fiber MaterialsPTFE 
ScrimPTFE 
Standard Finishes
(Special surface treatments available)
Heat Set, Singed, Glazed, PTFE membrane
Weight
oz/yd² (g/m2)
22.12-26.55 (750-900)

Thickness
   Inch (mm)
4-10 (2-5)
Air Permeability
 CFM@ ½" W.G125PA
 (m³/m².min@200PA )
21-50 (10-24)
  Tensile Strength
 lb/in (N/5CM)
Warp MD 80 (700)
Weft CD91 (800)
Tensile Elongation (%)Warp MD ≤15
Weft CD≤15
Thermal Shrinkage (%) at max continuous temp.Warp MD ≤3
Weft CD≤3.5
Max. Operating Temperature  oF (oC)Continuous500 (260)
Surge536 (280)
The data are based on laboratory conditions. 
Testing based on specific operating conditions of each installation is recommended.


Applications

Power Generation

Cement, Mining & Rock Products

Waste Incineration

Chemicals & Pharmaceuticals 

Metals & Foundry 

Food & Beverages 

Custom OEM Applications

Most popular applications include coal-fired power plants,cement production, and steel foundries


Ordering Information

Customized per order






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