FIELD: machine building.
SUBSTANCE: proposed plug comprises cover with threaded section for fixation to be screwed into radiator element sleeve, polyhedral part to be gripped by tool for cover screwing in/out, and shoulder extending radially between, said threaded section and grip part to produce tight joint with radiator element. Said shoulder has outer surface inclined toward threaded section to form recessed clearance. Plug comprises also cap to be fitted at cover front to cover shoulder and front section. Note here that said cap comprises peripheral edge to be latched to said surface fastening said shoulder.
EFFECT: cap allows ruling out painting of grip part.
20 cl, 6 dwg
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