| Material | General Info | Applications | Min Operating Temp |
 | UHMW-PE | UHMW PE is a lightweight polymer that offers a low coefficient of friction, is self-lubricating, has high impact strength, is shatter-resistant, long-wearing, abrasion, and chemical and corrosion-resistant. It meets FDA and USDA acceptance for food and pharmaceutical equipment. It performs well from cryogenic temperatures to 180 °F (82 °C). It is one of the most common plastics used for sliding wear components on conveyors and automation equipment, bushings, bearings, and rollers in various food processing, pharmaceutical, and other industries. It is unsuitable for higher temperature and high-load applications and has a high thermal expansion, so it is generally not used for tight tolerance applications. | | -200 °C / -328 °F |
 | PCTFE | PolyChloroTriFluoroEthylene is a fluorocarbon-based polymer and is commonly abbreviated PCTFE. The Kel-F® brand is a registered trademark of 3M, but they discontinued production in 1995. The only remaining brand, Neoflon ®, is made by Daikin Industries of Japan. This PCTFE resin has the same chemical structure and properties as the original Kel-F® brand material. PCTFE offers the unique combination of physical and mechanical properties, nonflammability, chemical resistance, low outgassing, near zero moisture absorption, and excellent electrical properties. These characteristics cannot be found in any other thermoplastic fluoropolymer with a useful temperature range of -400°F to +400°F (-240°C to +204°C). Important - Due to resin shortages of PCTFE, this material has limited availability. The Victrex CT Materials listed below have successfully replaced PCTFE in cryogenic sealing applications. We also have other replacement options. Contact us for help finding a suitable replacement. | - Cryogenic Seals
- Gaskets
- Valve Components
- Pump Components
| -240 °C / -400 °F |
| PTFE | PolyTetraFluoroEthylene is a fluorocarbon-based polymer and is commonly abbreviated PTFE. PTFE has outstanding chemical resistance, a wide operating temperature range from cryogenic to 500F, resistance to weathering, high impact strength, low friction, electrical and thermal insulation, and self-lubricating properties. It is unsuitable for high-load applications and has a high thermal expansion, so it is generally not used for tight tolerance applications. | - Bushings and Bearings
- Electrical Components
- Gaskets
Pump Components
- Valve Components
- Seals
- Valve Seats
- Wear Pads
| -240 °C / -400 °F |
 | Victrex CT 100 | VICTREX CT™ 100 Cryogenic Polymer is a high-performance thermoplastic material, unreinforced, semi-crystalline, available in sheet, rod, and tube, FDA food contact compliant, natural in color. It is formulated for low-temperature performance and is ideal for PCTFE replacement in static sealing applications with resistance to erosion and chemical attack in aggressive environments. CT 100 is a custom run product, minimums and longer lead-times will apply. | - Cryogenic Static Applications
- Pump and Valve Seals
- Pump, Valve, and Compressor Components
- Valve Seats
| -196 °C / -320 °F |
 | Victrex CT 200 | VICTREX CT™ 200 is a High-performance thermoplastic polymer suitable for dynamic sealing applications at very low temperatures. 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. 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. | - Cryogenic Dynamic Applications
- Pump and Valve Seals
- Pump, Valve, and Compressor Components
- Valve Seats
| -196 °C / -320 °F |
 | Torlon® 4203 PAI | Torlon® 4203 PAI unfilled polyamide-imide offers excellent compressive strength and the highest elongation of the Torlon® grades. It also provides electrical insulation and exceptional impact strength. This grade is commonly used for electrical connectors and insulators due to its high dielectric strength. Its ability to carry high loads over a broad temperature range from cryogenic to 500 F makes it ideal for structural components such as linkages and seal rings. Torlon® 4203 PAI is also an excellent choice for wear applications involving impact loading and abrasive wear. It is a perfect choice for many semiconductor applications requiring unique high performance properties. | - Aerospace Components
- Semiconductor Parts
- Electrical Components
- Insulators & Electrical Connectors
- Seal Rings
- Structural Parts
- Wear Components
- Bushings, Bearings, and Thrust washers
| -200 °C / -328 °F |
 | DuPont™ Vespel ® SP-1 PI & Plavis ® N PI | DuPont™ Vespel ® SP-1 is an unfilled polyimide. SP-1 is a high-purity polymer that provides maximum physical strength, elongation, toughness, and outstanding electrical and thermal insulation values. It offers an operating temperature range from cryogenic to 260°C (500°F). Vespel® SP-1 can be found in many critical structural and bearing and wear applications in aerospace, semiconductor, pump, valve, compressor, and other high-tech industries. Another unfilled polyimide with similar properties is Plavis® N. | | -195 °C / -319 °F |