marposs IWAVE2 Instruction Manual page 71

WARNING:
It's advisable the use of a the use of a thread-locker when tightening
the ring nut and the counter-ring nut, especially if the interface kit is
not disassembled often.
We suggest the use of the Loctite® 243 thread-locker or equivalent.
5) Fasten the locking screws of the plug gauge (see Figure 4).
4
CH3
Chapter 6  INSTALLATION OF PLUG HEAD
71