Anti-extrusion ring is used to provide firm support to the stripper rubber packer elements in a CTU stuffing box to prevent them from extruding too readily. It is a thin ring installed on the low pressure side of a seal to prevent elastomer extrusion into the clearance gap. It can also be used in conjunction with a vehicle solenoid valve has a plano-concave cross-section.
Antifog coating is a hydrophilic polymer based coating used to improve visibility of transparent lenses, windows and domed crystals by preventing condensation from ambient moisture. The coating is liquid based and forms a permanent transparent coating. It is applied to any substrate like glass and thermoplastic. It includes dip, spin, spray & flow coating. It is used in marine gauges, heavy construction equipment, automotive mirrors & instrument panels, aerospace glazing, military night vision lenses and outdoor vehicles.