Description
PCTFE Rod for Cryogenic Applications is a high-performance fluoropolymer stock shape engineered for extreme low-temperature environments. It offers ultra-low permeability, excellent dimensional stability, and reliable mechanical strength, making it ideal for precision-machined components used in cryogenic systems.
PCTFE rods designed for cryogenic applications are widely regarded as one of the most reliable fluoropolymer materials for ultra-low-temperature environments. Unlike many thermoplastics that become brittle or dimensionally unstable at low temperatures, PCTFE maintains excellent toughness, rigidity, and sealing capability, even under extreme cryogenic conditions.
From a low-temperature performance perspective, PCTFE rods perform reliably at temperatures down to approximately –200°C. The polymer's semi-crystalline structure allows it to retain mechanical strength and impact resistance where other materials may crack or lose sealing efficiency. This makes PCTFE rods particularly suitable for components used in liquefied gas systems such as LNG, liquid nitrogen, liquid oxygen, and other cryogenic media.
In terms of barrier properties, PCTFE rods exhibit exceptionally low moisture absorption and very low gas permeability. These characteristics are critical in cryogenic environments, where gas leakage or moisture ingress can lead to pressure loss, icing, or system failure. PCTFE's superior barrier performance ensures stable, long-term sealing even under repeated thermal cycling.
Regarding chemical resistance, PCTFE rods provide excellent resistance to a wide range of chemicals, including fuels, acids, alkalis, and solvents commonly encountered in cryogenic and aerospace systems. The chemically inert fluoropolymer backbone prevents degradation, swelling, or contamination, ensuring safe and reliable operation in high-purity environments.
From a mechanical and dimensional standpoint, PCTFE rods offer high compressive strength, good wear resistance, and outstanding creep resistance under continuous load. These properties allow precision-machined parts-such as valve seats, sealing rings, bushings, and bearings-to maintain tight tolerances and consistent performance over extended service life, even under pressure and temperature fluctuations.
Specification
| Diameter | 18mm,25mm,30mm,35mm,40mm,45mm,50mm,55mm,60mm,65mm,70mm,80mm,90mm,100mm or as your request. |
| Length | 1m or as your request. |
| Package | Especially Export Used Wooden Case. |
Typical Applications
● Cryogenic valve seats and seals
● LNG and liquefied gas handling systems
● Aerospace and aviation fuel components
● Low-temperature bearings and bushings
● High-purity cryogenic equipment
Advantages
● Features: High-purity PCTFE resin, solid rod form, ultra-low permeability.
● Advantages: Exceptional cryogenic toughness combined with chemical resistance and dimensional stability.
● Benefits: Reduced leakage risk, improved system safety, longer service intervals, and lower maintenance costs.
● Evidence: PCTFE rods are extensively used in cryogenic valves, aerospace fuel systems, and liquefied gas handling equipment, with performance validated through low-temperature testing, permeability analysis, and long-term industrial applications.
PCTFE rods are available in multiple diameters and lengths to support diverse machining and design requirements for cryogenic systems.
FAQ
Q1: Why is PCTFE preferred over other plastics for cryogenic applications?
A: PCTFE retains mechanical strength, dimensional stability, and sealing performance at extremely low temperatures where many plastics become brittle.
Q2: What is the minimum operating temperature for PCTFE rods?
A: PCTFE rods typically perform reliably down to approximately –200°C, depending on design and load conditions.
Q3: How does PCTFE compare with PTFE in cryogenic environments?
A: PCTFE offers much lower gas permeability and better dimensional stability, while PTFE is softer and less suitable for precision sealing at low temperatures.
Q4: Can PCTFE rods handle repeated thermal cycling?
A: Yes. PCTFE maintains structural integrity and sealing performance under repeated cryogenic-to-ambient temperature cycles.
Q5: Are custom sizes available for cryogenic PCTFE rods?
A: Yes. PCTFE rods can be supplied in a wide range of standard and custom diameters and lengths.
Looking for PCTFE rods specifically engineered for cryogenic applications?
Contact us today to request technical data, cryogenic performance information, and expert support in selecting the right PCTFE rod for your low-temperature system.
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