The Glow-worm seal case bottom part is listed as part of the casing section. The casing is the external cover of the heating unit. The casing will be different depending on the appliance in question. The various designs have changed over the years as the suppliers strive to make them as user-friendly as possible.
White colour
Fits various Glow-worm appliances
Technical specification
Manufacturer Model NoS212230Brand NameGlow-wormCompatible With100 FF and 120 FF