1009951B Hengst Tank Breathing Filter Size 3-40 (R928040622, TLF II 3-40 P10-S00-000-00M00)1009951B Hengst Tank Breathing Filter Size 3 40 (R928040622, TLF II 3 40 P10 S00 000 00M00); Breathing filters are used in hydraulic system for breathing and bleeding air from the hydraulic tank. They are mounted directly on the tank. Features: Highly efficient, special filter material; Filtration of ultra fine particles and high dirt holding capacity Use of Aquasorb filter material minimizes the risk of corrosion in the hydraulic tank; Replaceable