Victrex CT™ 200 Superior Alternative To PCTFE

VICTREX CT™ 200 is a high-performance thermoplastic PEEK polymer suitable for dynamic sealing applications at very low temperatures.As the latest member of the VICTREX CT™ PEEK polymers, the 200 grade series exhibits improved sealing over a wider range of temperatures, compared to commonly used materials such as PCTFE. It does so at low temperatures on account of its greater ductility, and at high temperatures due to its superior creep resistance. It also offers a lower static and dynamic coefficient of friction which helps minimize torque and wear, allowing smaller actuators and saving space and weight.Ptfe Sheet round bar

In addition, laboratory testing indicates that they may require less torque to actuate since they have a lower static and dynamic coefficient of friction compared to PCTFE. This results in less wear, higher performance and a potential for cost savings.F4 PVDF sheet rod

VICTREX CT™ 200 can replace Kel F PCTFE in many sealing applications in cryogenic applications with improved strength, thermal conductivity, superior dimensional stability, and lower coefficient of friction.PTFE board

KEY BENEFITS OF VICTREX CT™ 200 OVER PCTFE

Higher tensile strength than PCTFE coupled with a lower modulus confirms more ductility across a wider range of temperatures; testing at (-320 F / -196 C to 302 F /150 C) indicates better sealing capabilities than PCTFE which would also extend to higher temperatures in the range of 392 F /200 C.PTFE sheet

Improved dimensional stability with a Lower and constant coefficient of thermal expansion ensures more dimensional stability and minimizes the shrinkage at low temperatures.

Higher thermal conductivity permits a faster reaction to temperature changes allowing the seat seal to keep interference with the steel counter-surface at all times – contributing to more consistent sealing.

"VICTREX CT 200 possesses the outstanding properties of PEEK, including high strength, and the ability to withstand aggressive chemicals," commented James Simmonite, Director Energy at Victrex. "In particular, we designed the new polymer with a lower coefficient of friction compared to its cousin VICTREX CT™ 100. All of these characteristics put VICTREX CT™ 200 ahead of materials such as PCTFE for cryogenic applications involving gases such as LNG and nitrogen. This is particularly the case in relation to dynamic applications, such as seat inserts, which must remain leak-proof when mechanical movement occurs. VICTREX CT 200 means dynamic progress for the industry."

Key Properties

Excellent Chemical Resistance

High Strength

Provides a lower static and dynamic coefficient of friction which helps minimizing torque and wear allowing smaller actuators and saving space and weight.

Formulated for Cryogenic Dynamic Sealing Applications

Higher Tensile Strength than PCTFE coupled with lower modulus confirms more ductility across a wider range of temperatures; testing at (-320 F / -196 C to 302 F /150 C) indicates better sealing capabilities than PCTFE which would also extend to higher temperatures in the range of 392 F /200 C.

Lower and constant coefficient of thermal expansion ensures more dimensional stability and minimizes low temperature shrinkage.

Higher thermal conductivity permits a faster reaction to temperature changes allowing the seal to keep interference with the steel counter-surface at all times contributing to a more consistent seal.

Applications

Dynamic Sealing Applications

Pump and Valve Seals

Turbine Seals

Cryogenic (Low Temperature) Sealing Applications

What is the alternative to Pctfe?

CT™ 200 offers improved tensile strength and withstands constant pulling and stretching better than PCTFE. It also has a lower modulus than PCTFE, which means it possesses superior ductility at a greater range of temperatures