In addition to the PTFE-based materials described below, we can manufacture seals and other details in a variety of other PTFE materials with fillers specifically suited for a given application. We have either in stock or with Other PTFE-based materials short delivery time a wide range of PTFE-based materials to offer.
Excellent chemical and thermal resistance. FDA-approved. Limited mechanical properties. If improved mechanical properties are required FL5™ or a filled PTFE should be considered.
Because of its special composition, FL2 has good physical properties and distinctly better creep behaviour than PTFE-virgin. Also higher wear resistance than most PTFE with fillers.
FL3 material has good mechanical properties, and can be used at higher loads compared to FL2 and FL5.
Excellent compression and wear resistance, good thermal conductivity and low permeability. Suitable for a wide range of applications.
FL5 has the same chemical properties as PTFE-virgin, and is also defined as a homopolymer according to ISO 12086. FL5 has highly improved mechanical properties in comparison to PTFE-virgin, see also the “Suggested Materials” section. Seal Engineering AS considers FL5 to be our standard “PTFE-virgin”.
FL14 has excellent wear resistance. The filler is very gentle to mating metal surfaces, making it a good choice for rotary applications. FL14 is FDA approved and widely used in the food industry.