Electrically-heated water tank - has O=ring seal between heater and tank with annular plastics distance piece

摘要

The electrically-heated hot-water tank is made of plastics material, with a base opening closed by a pot-shaped heater body flange of metal. The seal between the flange and tank necks is an O-ring (9), and between the latter and the edge (10) of the heater body flange (3) is an annular distance piece (11) of heat-resistant plastics. The distance piece can be of approx. right-angle section, one of its flanges (12) being clamped between the edge (10) and the beaded-over neck (5) of the water tank (1).