30 amp cord weather boot broke

The twist ring that tightens the power cord to the outside outlet (on 171) broke off.  Need it? If so, where to get it?  thanks

Yeah, me, too, about the tightening; but they are a bit flimsy.  Thanks for the idea which will at least make it weather resistant.    

These are marine grade and are designed for attaching a floating boat to shore power.  Therefore to prevent them from falling off during a boats rocking when docked they added the screw feature in addition to the slight turn.  Since an RV does not rock like a boat it is not necessary to hold it in place.  It does help keep it dry to prevent shock and shorting out.  Bottom line, can you continue using it.  Sure, just be sure to keep it dry. Use some tape over it when connecting. Or try attaching an outlet cover.  Much cheaper than replacing the  cord.

Order one from Amazon. Use hot water to soften the plastic of the fitting and slide the ring over it. Then put it in position and tighten the ring until the plastic flange cools and sets. I had to do this when I accidentally ran over ours.