Permatex 54540 Pneumatic/Hydraulic Sealant
OEM specified. Designed for locking and sealing high pressure hydraulic and pneumatic systems. Contains no fillers or particles which could contaminate system fluids, foul valves, or clog fine filters and screens. Reliably cures on “as received” fasteners and controlled locking strength affords easy disassembly. - See more at: https://www.permatex.com/products/thread-compounds/thread-sealants/permatex-pneumatichydraulic-sealant/#sthash.ZTBiMqyF.dpuf