PCTFE · Polychlorotrifluoroethylene · CAS 9002-83-9

PCTFE Material Supplier & Manufacturer

Peflon supplies PCTFE material from manufacturer-controlled production — supporting distributors and plastic processing companies with stable barrier, mechanical reliability and supply security.

  • PCTFE supplied directly from manufacturer
  • Built for repeat orders, not one-off trials
  • Suitable for regulated and sealing applications
CAS 9002-83-9Polychlorotrifluoroethylene
210–215 °CMelting Point
−200 to +190 °CService Range
WVTR 0.04Moisture Barrier
Introduction

What is PCTFE?

PCTFE (polychlorotrifluoroethylene — also known as Kel-F or Neoflon, CAS 9002-83-9) is a melt-processable fluoropolymer polymerized from chlorotrifluoroethylene with ultra-low moisture permeability and excellent dimensional stability. As a transparent barrier polymer, PCTFE is available as film, resin, sheet and custom shapes, meeting FDA, ISO and RoHS standards in many grades. Peflon offers over a decade of PCTFE manufacturing experience with GMP-clean production lines in China. Custom formulation, strict QA testing, full data-sheet support and fast global logistics — for pharmaceutical, cryogenic or semiconductor use, Peflon PCTFE ensures stable barrier, mechanical reliability and supply security.
Properties

PCTFE Properties & Characteristics

Twelve typical physical, mechanical and electrical properties — measured per ASTM and DSC standards. See independent PCTFE material properties for baseline data.
Property Typical Value Test Method Notes
Density 2.10–2.17 g/cm³ ASTM D792 Slightly higher than PTFE
Tensile Strength 40–50 MPa ASTM D638 High mechanical rigidity
Elongation at Break 5–15 % ASTM D638 Good toughness at low temps
Flexural Modulus 1,000–1,300 MPa ASTM D790 Excellent stiffness
Melting Point (Tm) 210–215 °C DSC Stable crystalline structure
Glass Transition (Tg) 45 °C DSC Ensures rigidity at room temp
Service Temperature −200 °C to +190 °C Shape retained at cryogenic
CTE 5 × 10⁻⁵ /°C ASTM E831 Low dimensional change
WVTR 0.04 g·mm/m²·day ASTM F1249 Exceptional moisture barrier
Dielectric Constant (1 MHz) 2.1–2.3 ASTM D150 Stable insulation
Volume Resistivity 10¹⁶ Ω·cm ASTM D257 Excellent electrical insulation
Flammability Self-extinguishing UL 94 V-0 High safety index

Dimensional Stability

Very low thermal expansion — predictable dimensions under rapid temperature change. Ideal for tight-tolerance sealing parts.

Machinability

Clean CNC machining with sharp edges, smooth surfaces and uniform thickness — no cold flow like softer fluoropolymers.

Optical Clarity

Clear or translucent form — used in instruments requiring visual inspection, liquid viewing or sample containment.

Stress-Crack Resistance

Outperforms many plastics — extended service life in oxygen systems and compressed-gas equipment.

Product Categories

PCTFE Raw Material Forms

High-purity PCTFE resin pellets and fine powder grades — each form engineered for injection molding, extrusion or rotational molding.

PCTFE Resin Pellets

Designed for injection molding and extrusion — cryogenic valve seats, seals and thin barrier films.

PCTFE Powder

Fine powder grade — designed for rotational molding and custom processing routes.

Applications

Common Applications of PCTFE

Extreme reliability, low permeability and thermal stability — from medical packaging to cryogenic systems and semiconductor parts.
Peflon PCTFE Sheet

Pharmaceutical Packaging & Blister Films

Thin PCTFE film for clear, low-moisture barriers — critical for drug stability and shelf life.

Solar Panels & Cryogenic Parts

Low-temperature toughness — cryogenic valves, pump seals, solar panel films and O-rings.

Peflon PCTFE Sheet

PCTFE Sheet & Plate

Inspection covers, cold-storage panels and oxygen-compatible parts — stable thickness and shape for fabrication.

Peflon PCTFE Sheet

PCTFE Rod for Machined Parts

Precision machining — clean turning, drilling and milling without chipping. Valve seats, bushings, cryogenic connectors.

Peflon PCTFE Sheet

Precision-Machined PCTFE Parts

Complex geometries and prototype runs — semiconductor, aerospace and cryogenic equipment designers.

Molded PCTFE Tubes

PCTFE Molded Components

Consistent dimensions and low internal stress — medium-to-high volume OEM orders, fluid control and lab devices.

FAQ

Frequently Asked Questions

What makes PCTFE different from other fluoropolymers?PCTFE offers a unique balance of stiffness, clarity and clean handling. PCTFE sheet and PCTFE rod suit parts requiring steady shape and low surface change during long operation cycles — where PTFE would cold-flow.
Is PCTFE suitable for direct contact with oxygen or medical gases?Yes. PCTFE performs well in oxygen systems — it does not shed particles easily and stays stable under pressure. Widely used in oxygen valves, gas regulators and medical testing tools.
Can PCTFE be injection-molded or only machined?Both work. Machine PCTFE rod for tight-tolerance parts, or mold PCTFE pellets for repeat-order simple designs. The right choice depends on part geometry and production volume.
How should PCTFE be stored to avoid performance changes?PCTFE sheets and rods should be kept in clean, dry storage away from heat and sharp tools. The material doesn’t absorb much moisture, but proper storage keeps surfaces scratch-free before machining.
Do you provide custom sizes or drawings for PCTFE components?Yes. Peflon supports custom PCTFE machining and molding — send your drawing, preferred diameter or thickness and we’ll prepare a sample or quote.
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Technical Support

Technical Support of PCTFE

Selecting and machining PCTFE raises real engineering questions — dimensional stability, permeation, cryogenic behaviour and processing. Our technical library shares practical, hands-on guidance from the Peflon materials team.
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