ISO 16589 describes seals utilizing sealing elements manufactured from suitably formulated compounds, based on thermoplastic materials, such as polytetrafluoroethylene (PTFE).
NOTE ISO 16589 is complementary to ISO 6194 which covers elastomeric seals.
This part of ISO 16589 defines and classifies typical surface imperfections that could impair the function of the seals, and is intended as a convenience for purchasers and manufacturers in their discussions about the importance of these imperfections in different applications.
ISO 16589-5:2001 history
2011ISO 16589-5:2011 Rotary shaft lip-type seals incorporating thermoplastic sealing elements - Part 5: Identification of visual imperfections
2001ISO 16589-5:2001 Rotary shaft lip-type seals incorporating thermoplastic sealing elements - Part 5: Identification of visual imperfections