Rotary shaft seals with PTFE sealing lips are sealing elements – ready for assembly – which produce the desired sealing effect through radial contact pressure on the shaft. Sealing performance in the receiving hole is achieved by compression fit according to ISO 16589-1. Radial seals with PTFE sealing lips are ideally suited for sealing rotating shafts. The requisite radial contact pressure is assured by selecting the suitable PTFE compound and sealing lip geometry as well as a special manufacturing process. To cover a wide range of application requirements, standard ranges have been developed. Type HN 2390 is used with pressurized media, while type HN 2580 is primarily used for pressureless service and/or with pressures slightly above atmospheric.
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