JRC JLN-900 Installation And Instruction Manual page 46

General recommendations for flange joints/connections
Further instructions below where mounting of stainless steel screws, nuts and washers is
described, it is generally recommended to use Molybdenum sulphide grease (MoS2 grease)
on threads in order to obtain smooth engagement of threads and avoid severe friction which
occasionally might obstruct or even damage threads.
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