Since the FlexiSeal solves problems along several parameters, it is used in virtually every market. Examples of extreme condition applications that involve lower speeds and higher pressures for which the rotary FlexiSeal is best suited include:
FlexiCase designs feature PTFE lips that seal dynamically on a shaft and a metal case OD which creates a static, press-fit seal against the housing (bore). Gaskets and spacers may be sandwiched between layers of sealing lips and/or the metal casing to eliminate potential leak paths.
FlexiCase rotary shaft seals are manufactured from a wide variety of PTFE composites as well as machinable plastic materials. The PTFE sealing lips are generally not spring energized so the radial lip contact forces are comparably lower than rotary FlexiSeal profiles which are spring-energized. Designs with garter springs are available for high run-out or abrasive media conditions. Back-up washers on select profiles extend pressure capability.
FlexiLip rotary seals feature an ID lip that seals dynamically on a shaft and an elastomeric O-ring on its OD to seal statically in a bore. Since the lip is not spring energized, the radial lip contact forces are lower than a rotary FlexiSeal.
The seals are machined from a wide variety of PTFE composites and other machinable plastic materials. Standard O-ring options are fluorocarbon, silicone, nitrile and EPDM. This broad foundation of O-ring and PTFE materials can be tailored to suit nearly all applications. Standard and non-standard FlexiLip profiles are precision machined to fit inch-fractional and metric gland geometries. Standardized tooling and machining efficiencies make FlexiLip seals a cost-effective, high production solution.
Physical property information contained in a typical Material Data Sheet correlates to understanding PTFE seal behavior in application. Read part one of Dr. Aydin Aykanat's article to better understand how to read and interpret technical data sheets for PTFE seal materials.
Physical property information contained in a typical Material Data Sheet correlates to understanding PTFE seal behavior in application. Read part two of Dr. Aydin Aykanat's article to better understand the connection between physical properties, test methods and correlation to selection for application suitability.