Through-Wall Heaters | McMaster-Carr

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Ammonium Hydroxide (0-3% Concentration)

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Ethylene Glycol

Nitric Acid (0-3% Concentration)

Nitric Acid (3-6% Concentration)

Soap Solutions

Sodium Hydroxide (Caustic Soda) (0-3% Concentration)

Sodium Hydroxide (Caustic Soda) (3-6% Concentration)

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Electrical Phase

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304 Stainless Steel

Incoloy Nickel

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Material

Incoloy Nickel

Stainless Steel

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Watt Density

Heating Element Diameter

17/64"

5/16"

7/16"

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Yes

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DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

EAR99

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25 Products

Finned Tubular Heating Elements for Duct, Ovens, and Dryers


M-Shape	Straight	U-Shape

These tubular heating elements minimize the risk of sparks and fire from combustible particles in the flow stream, making them a safer choice than open coil heating elements. Finned for increased surface area, they quickly dissipate heat in air and inert gas heating systems such as duct heating elements and convection ovens. Their sheath, fins, and fittings are made of stainless steel, which resists heat and corrosion better than steel. These heating elements require a temperature switch or control (sold separately) to regulate output.

Welded on One End—Heating elements with end fittings welded on one end have one fitting permanently welded for a secure connection, while the other fitting is loose to create room for tube expansion during heating. The extra space helps prevent damage.

						Fin			Heating Element		Screw Terminal
	Wattage, W	Watt Density, W/in²	Current, amp	Overall Lg.	Max. Heat Output, ° F	Lg.	Dia.	Material	Lg.	Material	Thread Size	Lg.		Each
120V AC, Single Phase







				Straight—Welded on One End

				1,000	60	8.33	23 1/2"	1,200	16 1/2"	15/16"	Stainless Steel	20"	304 Stainless Steel	8-32	1.125"	7085N13	0000000




						U-Shape—Welded on Both Ends

						1,000	60	8.33	12"	1,200	8 3/4"	15/16"	Stainless Steel	10 1/4"	304 Stainless Steel	8-32	1.125"	7085N42	000000




								M-Shape—Welded on Both Ends

								1,500	60	12.5	9 1/2"	1,200	6 1/4"	15/16"	Stainless Steel	7 3/4"	304 Stainless Steel	8-32	1.125"	7085N72	000000


								240V AC, Single Phase







												Straight—Welded on One End

												2,000	80	8.33	32 1/4"	1,200	25"	1 3/16"	Stainless Steel	28 1/4"	304 Stainless Steel	10-32	1.125"	7085N18	000000




														M-Shape—Welded on Both Ends

														3,000	80	12.5	12 1/4"	1,200	9"	1 3/16"	Stainless Steel	10 1/4"	304 Stainless Steel	10-32	1.125"	7085N77	000000


														4,000	80	16.67	15 1/4"	1,200	12"	1 3/16"	Stainless Steel	13 1/4"	304 Stainless Steel	10-32	1.125"	7085N78	000000


														480V AC, Single Phase







																		U-Shape—Welded on Both Ends

																		1,000	80	2.08	9 3/4"	1,200	6 1/2"	1 3/16"	Stainless Steel	7 3/4"	304 Stainless Steel	10-32	1.125"	7085N54	000000


																		2,000	80	4.17	15 3/4"	1,200	12 1/2"	1 3/16"	Stainless Steel	13 3/4"	304 Stainless Steel	10-32	1.125"	7085N56	000000
																		3,000	80	6.25	22 1/4"	1,200	19"	1 3/16"	Stainless Steel	20 1/4"	304 Stainless Steel	10-32	1.125"	7085N57	000000
4,000																		80	8.33	28 1/4"	1,200	25"	1 3/16"	Stainless Steel	26 1/4"	304 Stainless Steel	10-32	1.125"	7085N58	000000




		M-Shape—Welded on Both Ends

		3,000	80															6.25	12 1/4"	1,200	9"	1 3/16"	Stainless Steel	10 1/4"	304 Stainless Steel	10-32	1.125"	7085N85	000000


		4,000	80															8.33	15 1/4"	1,200	12"	1 3/16"	Stainless Steel	13 1/4"	304 Stainless Steel	10-32	1.125"	7085N86	000000
		6,000	80															12.5	21 1/4"	1,200	18"	1 3/16"	Stainless Steel	19 1/4"	304 Stainless Steel	10-32	1.125"	7085N88	000000
		7,000	80															14.58	24 1/4"	1,200	21"	1 3/16"	Stainless Steel	22 1/4"	304 Stainless Steel	10-32	1.125"	7085N89	000000

Bend-and-Stay Immersion Heating Elements with Through-Wall Fittings for Chemical Solutions

Form these heating elements into any shape and install them through container walls with the attached bulkhead fittings. They quickly and efficiently heat liquid through direct contact. All require a temperature switch or controller (sold separately) to regulate heat output. The Incoloy heating element has excellent resistance to harsh chemicals.

Note: Fully immerse the heating element in liquid to prevent heating element failure.

							Thread
	Wattage, W	Watt Density, W/in²	Current, amp	Heating Element Lg.	Min. Bend Radius	For Hole Size	Size	Type	Gender	Wire Connection	Includes	For Use With		Each
120V AC, Single Phase







				17/64" Diameter Heating Element

				250	30	2.1	11"	15/16"	15/32"	7/16"-20	UNF	Male	Screw Terminal	Flat Washers Gaskets Hex Nuts	Ammonium Hydroxide (0-3% Concentration) Ammonium Hydroxide (3-6% Concentration) Ethylene Glycol Nitric Acid (0-3% Concentration) Nitric Acid (3-6% Concentration) Soap Solutions Sodium Hydroxide (Caustic Soda) (0-3% Concentration) Sodium Hydroxide (Caustic Soda) (3-6% Concentration) Water	1489N31	0000000


				350	30	2.9	15"	15/16"	15/32"	7/16"-20	UNF	Male	Screw Terminal	Flat Washers Gaskets Hex Nuts	Ammonium Hydroxide (0-3% Concentration) Ammonium Hydroxide (3-6% Concentration) Ethylene Glycol Nitric Acid (0-3% Concentration) Nitric Acid (3-6% Concentration) Soap Solutions Sodium Hydroxide (Caustic Soda) (0-3% Concentration) Sodium Hydroxide (Caustic Soda) (3-6% Concentration) Water	1489N32	000000
				450	30	3.8	20"	15/16"	15/32"	7/16"-20	UNF	Male	Screw Terminal	Flat Washers Gaskets Hex Nuts	Ammonium Hydroxide (0-3% Concentration) Ammonium Hydroxide (3-6% Concentration) Ethylene Glycol Nitric Acid (0-3% Concentration) Nitric Acid (3-6% Concentration) Soap Solutions Sodium Hydroxide (Caustic Soda) (0-3% Concentration) Sodium Hydroxide (Caustic Soda) (3-6% Concentration) Water	1489N33	000000
				650	30	5.4	27"	15/16"	15/32"	7/16"-20	UNF	Male	Screw Terminal	Flat Washers Gaskets Hex Nuts	Ammonium Hydroxide (0-3% Concentration) Ammonium Hydroxide (3-6% Concentration) Ethylene Glycol Nitric Acid (0-3% Concentration) Nitric Acid (3-6% Concentration) Soap Solutions Sodium Hydroxide (Caustic Soda) (0-3% Concentration) Sodium Hydroxide (Caustic Soda) (3-6% Concentration) Water	1489N35	000000
				850	30	7.1	35"	15/16"	15/32"	7/16"-20	UNF	Male	Screw Terminal	Flat Washers Gaskets Hex Nuts	Ammonium Hydroxide (0-3% Concentration) Ammonium Hydroxide (3-6% Concentration) Ethylene Glycol Nitric Acid (0-3% Concentration) Nitric Acid (3-6% Concentration) Soap Solutions Sodium Hydroxide (Caustic Soda) (0-3% Concentration) Sodium Hydroxide (Caustic Soda) (3-6% Concentration) Water	1489N37	000000
				1,000	30	8.3	41"	15/16"	15/32"	7/16"-20	UNF	Male	Screw Terminal	Flat Washers Gaskets Hex Nuts	Ammonium Hydroxide (0-3% Concentration) Ammonium Hydroxide (3-6% Concentration) Ethylene Glycol Nitric Acid (0-3% Concentration) Nitric Acid (3-6% Concentration) Soap Solutions Sodium Hydroxide (Caustic Soda) (0-3% Concentration) Sodium Hydroxide (Caustic Soda) (3-6% Concentration) Water	1489N38	000000
				1,500	30	12.5	60"	15/16"	15/32"	7/16"-20	UNF	Male	Screw Terminal	Flat Washers Gaskets Hex Nuts	Ammonium Hydroxide (0-3% Concentration) Ammonium Hydroxide (3-6% Concentration) Ethylene Glycol Nitric Acid (0-3% Concentration) Nitric Acid (3-6% Concentration) Soap Solutions Sodium Hydroxide (Caustic Soda) (0-3% Concentration) Sodium Hydroxide (Caustic Soda) (3-6% Concentration) Water	1489N43	000000




						5/16" Diameter Heating Element

						1,300	30	10.8	45"	1 1/16"	15/32"	7/16"-20	UNF	Male	Screw Terminal	Flat Washers Gaskets Hex Nuts	Ammonium Hydroxide (0-3% Concentration) Ammonium Hydroxide (3-6% Concentration) Ethylene Glycol Nitric Acid (0-3% Concentration) Nitric Acid (3-6% Concentration) Soap Solutions Sodium Hydroxide (Caustic Soda) (0-3% Concentration) Sodium Hydroxide (Caustic Soda) (3-6% Concentration) Water	1489N29	000000


						240V AC, Single Phase







										5/16" Diameter Heating Element

										850	30	3.5	31"	1 1/16"	15/32"	7/16"-20	UNF	Male	Screw Terminal	Flat Washers Gaskets Hex Nuts	Ammonium Hydroxide (0-3% Concentration) Ammonium Hydroxide (3-6% Concentration) Ethylene Glycol Nitric Acid (0-3% Concentration) Nitric Acid (3-6% Concentration) Soap Solutions Sodium Hydroxide (Caustic Soda) (0-3% Concentration) Sodium Hydroxide (Caustic Soda) (3-6% Concentration) Water	1489N16	000000




												7/16" Diameter Heating Element

												1,500	30	6.3	41"	1 1/2"	11/16"	5/8"-18	UNF	Male	Screw Terminal	Flat Washers Gaskets Hex Nuts	Ammonium Hydroxide (0-3% Concentration) Ammonium Hydroxide (3-6% Concentration) Ethylene Glycol Nitric Acid (0-3% Concentration) Nitric Acid (3-6% Concentration) Soap Solutions Sodium Hydroxide (Caustic Soda) (0-3% Concentration) Sodium Hydroxide (Caustic Soda) (3-6% Concentration) Water	1489N58	000000


												2,250	30	9.4	60"	1 1/2"	11/16"	5/8"-18	UNF	Male	Screw Terminal	Flat Washers Gaskets Hex Nuts	Ammonium Hydroxide (0-3% Concentration) Ammonium Hydroxide (3-6% Concentration) Ethylene Glycol Nitric Acid (0-3% Concentration) Nitric Acid (3-6% Concentration) Soap Solutions Sodium Hydroxide (Caustic Soda) (0-3% Concentration) Sodium Hydroxide (Caustic Soda) (3-6% Concentration) Water	1489N63	000000