Domestic Immersion Heater Installation Accessories

We offer a comprehensive range of accessories for the installation and control of our immersion heaters

All immersion heaters will require a gasket or ‘O’ ring, and while these are supplied with the heater kit as standard, spares or replacements will often be needed.


seals, gaskets and o rings


Part No: Size Dimensions (mm)
WH10B 1½”BSP 49 x 71 x 2
WH10C 1¾”BSP 53 x 77 x 2
WH10/1 2¼”BSP 66 x 83 x 1.5

‘O’ Rings

Part No: Size Dimensions (mm)
G024 1½”BSP 37 x 43 x 3
G020 1¾”BSP 49 x 56 x 3.5
G022 2¼”BSP 60 x 67 x 3.5

Most of our domestic heaters are installed in water cylinders with a pre-fitted threaded entry, but where it is necessary to fit a heater through a plain hole in a vessel wall, we offer flanges and backnuts for all common sizes.


immersion heater installation backnuts
immersion heater installation 2 part flange - Elemex


Designed to be fitted to an open-topped or accessible vessel

Part No: Size
BN12 1½”BSP
BN24 2¼”BSP

2 Part Flange

Designed to be fitted to a closed vessel from the outside

Part No: Size
WH11 2¼”BSP

Vertically mounted immersion heaters generally have an 86mm A/F hex flange, larger than most adjustable wrenches can accommodate, and we offer low-cost spanners to aid fitting, allowing uniform tightening without distorting the head or receptacle.


flat and box spanner
Part No: Size Type
WH12 86mm A/F Flat
WH13 86mm A/F Box

Our heater timer provides a low-cost means of short burst water heating and eliminates the perennial problem of “forgetting to turn off the immersion”, thus providing dramatic savings in running costs.


immersion control timer
Part No: Rating
T1 16A
Elemex immersion heater installation accessories are available in all good electrical wholesalers and builders merchants. Alternatively, you can email us for your nearest stockist.
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