Figure U adds an unheated area to the lead end of stock Mighty Watt Cartridge Heaters. Any practical length greater than 1/2" can be selected. The standard lead configuration is with 12" fully flexible high temperature (850° F/450° C) leads.

Specify longer length if required. Figure U can also include braided or armor cable protected leads.

Non-stock Mighty Watt Cartridge Heaters can be designed and manufactured with practically any unheated area.


Fig. E - Shown are the same
Mighty Watt Cartridge Heaters
modified from stock with 3/4",
1-1/4" and 1-3/4" long sheath
extension, Fig. E Epoxy seal
and Teflon leads.
Figure E provides an epoxy seal to protect Mighty Watt cartridge heaters from the contaminates that cause early failure. Typically supplied with 12" Teflon leads. Specify longer length. Maximum temperature at lead end­300° F/150° C.
Figures U and E
Sheath Extension (Typical) Total Unheated Length at Lead End
Fig. U Fig. E Fig. U Fig. E
1/2" 1" 7/8" 1-7/8"
1" 1-1/2" 1-3/8" 2-3/8"
1-1/2" 2" 1-7/8" 2-7/8"
2" 2-1/2" 2-3/8" 3-3/8"
2-3/4" 3-1/4" 3-1/8" 4-1/8"
3-1/2" 4" 3-7/8" 4-7/8"
Fig. U and Fig. E Ordering Instructions

Select Mighty Watt Cartridge Heater from stock, specify the necessary cold length, the type of termination and the lead length. Fig. E can also be manufactured to specification if size or rating required is not available from stock.


Figure M is a brass, steel or stainless steel pipe fitting which allows liquid tight installation through threaded openings. Fittings are brazed. For welded fittings and other cartridge immersion heater variations, scroll along this section. Be certain the watt density and sheath material are compatible with the material being heated.
Diameter Pipe Size NPT Pipe Fitting Length
1/4" 1/8-27 5/8"
3/8" 1/4-18 5/8"
1/2" 3/8-18 3/4"
5/8" 1/2-14 13/16"
3/4" 3/4-14 15/16"
Stock Sheath Length Is Immersion Length
Fig. M Ordering Information

Select Mighty Watt Cartridge Heater from Stock, brass, steel or stainless steel pipe fitting and size, type of termination and lead length.


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MW Stock List 1/8 - 1/4"
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Insertion 7a
Insertion 9a
Insertion 8a












     Fig.1B     Fig.1C     Fig.D     Fig.E     Fig.F     Fig.G     Fig.R     Fig.N     Fig.M     Fig.MC    Fig.T    Fig.U       Fig.W     Fig.X      Fig.Y 

For a closer look at terminations select link: 

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