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| Customization: | Available |
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| Material: | PTFE |
| Density: | 2.2 g/cm3 |
| Shipping Cost: | Contact the supplier about freight and estimated delivery time. |
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PTFE - is an acronym for polytetrafluoroethylene. It is commonly referred to Teflon®, which is a registered trademark of DuPont. It is utilized as a sealing material because it is able to withstand significantly more aggressive chemical environments, (including highly oxidizing environments), than both rubber or graphite based material. However its operating temperature, pressure and mechanical performance can be inferior to standard non-asbestos or graphite gasket materials.
PTFE is principally used as a gasket material because it is essentially inert and has the capability to remain unaffected by the majority of chemicals used in industry. Also, it can be classified, in most cases, as a food grade material, making it acceptable to both medical and food production industries. There are four basic types of PTFE gasket materials. Virgin PTFE , filled PTFE, restructured PTFE and expanded PTFE
Modified PTFE is modified in the molecule structure of PTFE and offers enhanced features, such as :better cold flow resistance ,lower permeability to chemicals and gases, weldability etc., which offers possibilities for new applications, especially in the area of safety and realiability.
| Porperty | Norm | Value |
| Density (g/cm3) | ISO1183 | 1.8-2.5 |
| Tensile strength at break % | ISO527 | 18-30 |
| Modulus of elasticity (Gpa) | ISO527 | 0.35-0.5 |
| Elongation at Break (%) | ISO527 | 150-350 |
| Shore D | Durometer | 50-65 |
| Temperature range ºC | -196-260 | |
| Coefficient of linear thermal expansion | ISO11359 | 1.0 |
Key Properties
Near-zero moisture absorption
Excellent performance under a wide temperature range
Resists most corrosive chemical
Excellent electrical-insulating properties
Extremely low outgassing
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