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Some Filter Fabrics

Fabric Type

Characteristics

Polyester

Offers good resistance to most acids, oxidizing agents and organic solvents. Concentrated sulfuric and nitric acids are the exception. Polyesters are dissolved by alkalies at high concentrations.

pH range: 2-9
Temperatureup to 300° F

Polypropylene

Offers good tensile strength and abrasion resistance. They perform well in organic and mineral acids, solvents and alkalies. Polypropylene is attacked by nitric and chlorosulphonic acids, sodium and potassium hydroxide at high temperatures and concentrations.
pH range: 2-12
Temperatureup to 200° F

Nylon

Good tensile strength and alkali resistance but is degraded by mineral acids and oxidizing agents. This reaction is accelerated at high concentrations and temperatures.

pH range: 2-8
Temperatureup to 250° F

Polyethylene

Synthetic resin adapted for extrusion of yarn and staple fibers. Excellent Resistance to mildew.
pH range: 2-12
Temperatureup to 150° F

Cotton

Good abrasion resistance and mechanical strength. It is, however, subject to rot, mildew and shrinkage.
pH range: 3-10
Temperatureup to 180° F

Teflon

Excellent chemical resistance throughout the pH range. High particulate collection. Efficiency and excellent abrasion resistance.
pH range: Any
Temperatureup to 500° F

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