Technical Principles | Informations Techniques Informaciones Técnicas | Princípios técnicos 46 Modification Application Stainless steel spring (material code 1.4571) Water applications, corrosive media Spring with optimized spring force (stronger/weaker) Applications with high circumferential speeds, lack of lubrication, strong vibrations, increased shaft runout. Venting or trimming of the dust lip Applications with linear shaft velocity between 8–15 m/s (25–50 ft/s) and oil seal with dust lip. Suck in of the sealing lip can be prevented through ventilation. Above 15 m/s (50 ft/s) timming of the dust lip necessary to prevent overheating. Greasing of the dust lip The dust lip must always be greased to lubricate it. There is the possibility of obtaining a pre-greased Simmerring from FST. (Grease: Klüber Petamo GHY 133 N) PTFE, nonwoven, or PTFE-impregnated nonwoven dust lip Applications with increased dirt entry, tire pressure control system, food applications, aggressive cleaning agents. MODIFIED CATALOG PRODUCTS | PRODUITS DE CATALOGUE MODIFIÉS PRODUCTOS DE CATÁLOGO MODIFICADOS | PRODUTOS DE CATÁLOGO MODIFICADOS