Ingress Ratings Sold as Marketing against a Real Test Report
Verify ingress claims using ISO IEC 17025 accredited test reports detailing pre and post electrical insulation checks rather than marketing datasheets.
Fluorocarbon Seals
Sealing Component
Elastomeric sealing components made from synthetic polymers containing fluorine which provide high thermal stability and chemical resistance. Specialized fluorocarbon seals operate in environments where standard nitrile or silicone materials would degrade due to aggressive fuels or hydraulic fluids. They maintain the pressure boundary in precision instruments and industrial vacuum systems.
Material Hardness
Durometer ratings for these components are selected based on the expected squeeze and the internal pressure of the assembly. Within the application of fluorocarbon seals, a balance exists between flexibility for installation and resistance to extrusion under load. Excessive compression leads to permanent deformation known as compression set which eventually compromises the seal.
Thermal Performance
Extreme temperatures alter the molecular structure of the elastomer and affect its ability to rebound after being loaded. Low temperature limits for fluorocarbon seals are determined by the glass transition point where the material becomes brittle and prone to cracking. Conversely, high heat can cause the polymer to outgas and contaminate sensitive optical or electronic components.
Manufacturers specify the operating range based on standardized testing in air and representative fluids.
Chemical Compatibility
Resistance to swelling and hardening depends on the specific fluorine content of the polymer chain. Degradation occurs if the seal comes into contact with incompatible polar solvents or certain amines. Periodic inspection for surface pitting or swelling identifies the end of the functional life of the component.