Common sizes and the arrangement of music note seal over the seal base plate. The initial interference note type seal shall vary from 2 to 5 mm depending upon the requirement and type of its installation discretion of the designer.

The music note seal is generally recommended to be used on gates operated for head up to 30 metres. hollow bulb music note seal is recommended for gates operated at low head up to 15 metres.

A solid bulb music note seal is recommended for gates operated at medium head, that is at a head
exceeding 15 m but less than 30 m.