Premium (21 series)

Premium (21 series)

Premium (21 series) are engineered to meet the most demanding belting applications


Premium (21 series)

The DuraFab® Premium Series is specially engineered to meet the most demanding belting applications. Its extremely smooth, non-stick surface provides the best release, highest dielectric strength, and greatest chemical resistance of any AFC PTFE coated fabric line. These fabrics are manufactured from woven fiberglass substrates, have the highest PTFE (Fluon®)content, and leave little-to-no fabric impressions. DuraFab® Premium Fabrics are excellent for use in the most challenging applications, such as the processing of sticky or gummy materials, or certain process applications requiring an extremely smooth surface.

DuraFab® PTFE Coated Belt Characteristics

DuraFab® Belts are engineered to retain the distinctive properties of PTFE; however, by adding a glass fabric to the matrix, AFC is able to obtain the added benefits of dimensional stability, excellent tensile strength and extremely low elongation (<1%). DuraFab® Belts have received USDA approval for food processing and handling, and are FDA compliant (21 CFR177.1550). In addition, the DuraFab® belts can operate in temperatures from -400°F (-240°C) under static conditions and -100°F (-73°C) under dynamic conditions up to 550°F (288°C).

Typical Applications

Rotary band sealing
Form fill and seal
Over wrapping (Tray packing)
Side and End sealing
Food Products:
Manufacture of tortillas, pizza crusts and pitas
Baking and cooking of bakery goods and confectionary
Cooking and grilling of meat, poultry, fish and vegetables
Cryogenic/flash freezing of meat, poultry, fish and vegetables
Manufacture of flavorantsPrinting and Textiles:
Heat transfer press sheets
Fabric lamination
Garment fusing
Processing of natural, synthetic, woven, non-woven, and knitting fabrics

Building Products:
Manufacture of specialty wood-based products

Polymer Processing:
Curing and drying of rubber, sponge, foams, and polyurethane glues
Manufacture of rubber and vinyl (PVC) backed carpet mats
Processing of polyethylene
Cooling of bitumen backed tiles
Curing of ceramic tiles
Chemical Processing:
Tank seals and contaminant barriers
Gaskets, membranes, seals & diaphragms
Corrosion resistant chute, drum, and hopper liners
Protective curtains and apronsPulp and Paper:
Tissue side sealing

Production or recycled plastic sheet

Additional applications exist. Contact AFC for more specific information.

Styles Available



(lbs/sq yd)

(lbs/in. of width)

Edge Tear
Warp (grams)

Edge Tear
Fill (grams)

Min. Pulley Dia.

Maximum Widths (in.)

21-03 .003″ 0.33 56 380 250 3″ 80
21-05 .005″ 0.51 100 800 700 3″ 38
21-06 .006″ 0.58 100 800 700 3″ 80
21-11 .011″ 1.10 200 1400 1100 6″ 80
21-14 .014″ 1.30 320 3700 3200 6″ 80

Please note: Additional thickness and styles available upon special order and lead times may vary for different styles and widths.

*Disclaimer: All figures provided in the above table are based upon ASTM D 4969-97, the Standard Specification for Polytetrafluoroethylene (PTFE) Coated Glass Fabric. The above PIW values are based upon the ASTM D828 test method and are not actual values of AFC’s materials. The above tensile values are 80% of the figures provided in Table 6 of specification D579. AFC states that its actual tensile will be greater than the above material specification and that actual tensile values will be provided upon request. Edge Tear values are based upon ASTM D1424 (Elmendorf Tearing Test) and are average values that can vary.

Get a Free no obligation Quote