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WST — Wan Su Tong Trading Limited

PFAPerfluoroalkoxy alkane

For demanding fluid-handling applications. Melt-processable perfluoropolymer with the chemical resistance of PTFE and the clarity and purity needed for clean fluid paths.

PFA · resin pellets · schematic illustration

Overview

Applications, forms and properties.

Family-level orientation. Values for a specific grade are quoted only from that grade’s own data sheet.

Typical applications
  • High-purity chemical delivery systems
  • Tubing and fittings for clean fluid transport
  • Wet-process components in semiconductor-related manufacturing
  • Coolant-path tubing and fittings in liquid-cooling loops
Confirmed supply forms
  • Resin / pellets
  • Tubing
  • Fittings & molded components
Why it is chosen
  • Broad chemical resistance across process chemistries
  • High-purity behavior suited to clean systems
  • Stable across a wide service-temperature range
  • Melt-processable — extruded tubing, molded fittings
Grades & documents
11 Teflon™ PFA grade references are listed below, with the producer’s published typical values. TDS, SDS and lot CoA are supplied with the material where the producer issues them. Request documentation
Teflon™ PFA grades

Grade references.

Chemours Teflon™ PFA is supplied as pellets (and one powder grade). Three series: the general-purpose 300 series, the HP high-purity series (“New PFA”) developed for semiconductor and other clean applications, and Super PFA with a smoother, lower-permeation surface. MFR is measured at 372 °C / 5 kg.

General grades

GradeFormMFR g/10 minCharacterProcessTypical use
Teflon™ PFA 340Pellet14General-purpose gradeInjection, extrusionMolded parts, fittings, wire coating, tubing
Teflon™ PFA 345Pellet5Improved stress-crack resistanceExtrusion, compressionHeavy-wall wire, tubing, film
Teflon™ PFA 350Pellet2High stress-crack resistance; chemical-plant liningsExtrusion, transfer, compressionLined equipment, hose, tubing, film, heat-shrink tubing

HP high-purity series (“New PFA”)

GradeFormMFR g/10 minCharacterProcessTypical use
Teflon™ PFA 416HPPellet40High purity; thin sections and small partsInjection, extrusionTubing, small parts, fine wire
Teflon™ PFA 420HP / 920HPPellet38High purity; high flowInjection, extrusionTubing, small parts, fine wire
Teflon™ PFA 440HP / 940HPPellet14High-purity standard gradeExtrusion, compressionWafer carriers, fittings, tubing
Teflon™ PFA 445HP / 945HPPellet5Stress-crack resistance; equipment liningsExtrusion, compressionHeavy-wall wire, tubing, film
Teflon™ PFA 450HP Plus / 950HP PlusPellet2Stress-crack resistance; semiconductor equipmentExtrusion, transfer, blow moldingLinings, hose, tubing, film, heat-shrink tubing, bottles

Lower fluoride-ion and impurity extraction; the standard choice in semiconductor wet processes. 9xxHP grades are the paired variants of each 4xxHP grade.

Super PFA

GradeFormMFR g/10 minCharacterProcessTypical use
Teflon™ PFA 451HPPellet2High purity, smooth molded surface, very low permeation, high stress-crack resistanceExtrusion, transfer, blow moldingSemiconductor linings, hose, tubing, film, bottles
Teflon™ PFA 951HP PlusPellet2High purity, very low permeation, high stress-crack resistanceExtrusionTubing, linings
Teflon™ PFA 9738Powder5Rotational molding and rotolining gradeRotomoldingChemical containers, tanks, linings
Teflon™ PFA film
Transparent thermoplastic film for heat-sealing, thermoforming, lamination and release. See the film and specialty lines on the materials page.
Teflon™ PFAD 335D dispersion
60 % solids aqueous dispersion for non-stick coatings.

Typical values as published by the producer for orientation; they are not a specification. Each grade is confirmed against its current TDS, with units and test conditions, before we quote. Chemours, Teflon™, Tefzel™, Zonyl™ and ECCtreme™ are trademarks of The Chemours Company.

Before we quote

What we confirm first.

The questions that decide whether a PFA grade fits your line. Having them ready shortens the first exchange.

Purity class required

E.g. high-purity / semiconductor grade vs. general grade

Form and dimensions

Tubing OD/ID/wall, fitting geometry, or pellet grade

Process chemistries and operating temperature the part will see

Documentation the qualification requires

TDS, SDS, CoA, origin

Request PFA for your application.

Tell us the grade or the part, the form and dimensions, the volume and where it ships.