Most recent
BS ISO 16589-5:2011
Rotary shaft lip-type seals incorporating thermoplastic sealing elements. Identification of visual imperfections (British Standard)
ISO 16589 specifies seals utilizing sealing elements manufactured from suitably formulated compounds based on thermoplastic materials, such as polytetrafluoroethylene (PTFE). They are considered suitable for use under low-pressure conditions.
ISO 16589-5:2011 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 concerning the importance of these imperfections in different applications.
British Standards Institution [bsi]