Data Sheet: PTFE Felt Filter Bag 745 g/m2 (22 oz/yd2)


A 260°C (500°F) maximum service temperature, expanded polytetrafluoroethylene felt filter bag for use in pulse jet style dust collectors with chemically aggressive operating conditions.

Features and Benefits

  • Patented GORE™ High Durability membrane technology provides an excellent combination of filtration efficiency, airflow, and durability.
  • Chemically inert providing the highest all-around chemical resistance and maximum bag life.
  • Constructed using a woven PTFE scrim that provides excellent dimensional stability, extended flex life, and resistance to mechanical damage over the life of the filter.


  • Power Generation and Incineration: Medical, municipal, industrial, sewage sludge, biomass, and hospital waste incineration, as well as coal-fired boilers.
  • Chemicals Processing: Dryer offgas filtration under chemically or thermally demanding conditions.
  • Metals Industry: Lead, copper, and other base metal production.
  • Minerals Industry: Brick and light-weight aggregate kilns.

Technical Specifications

Weight 745 g/m² (22 oz/yd²)
Fiber Content Staple – Polytetrafluoroethylene
Scrim – Woven Polytetrafluoroethylene
Felt construction Supported Needlefelt
Continuous operating temperature 260°C (500°F)
Maximum Surge Temperature 274°C (525°F)
Acid resistance Excellent
Alkali resistance Excellent
Breaking strength  
• Warp: 712 N/5 cm (160 lb/2 in) wide sample – min
• Fill: 578 N/5 cm (130 lb/2 in) wide sample – min
Mullen burst 2758 kPa (400 psi) min
Thickness 1.07 mm (0.042 in)
Thermal Stability < 2% shrinkage at 260°C (500°F) after 2 hours (unrestrained)
Durability Good


Not for use in food, drug, cosmetic or medical device manufacturing, processing, or packaging operations.