Carefully researched manufacturing methods and quality materials have made Tempco tubular heaters stand apart from other heating elements claiming similar performance. A computer-designed helical coil of 80% Nickel 20% Chromium alloy resistance wire is fusion welded to the nickel-coated steel terminal cold pin. This coil assembly is precisely stretched and centered in the element metal sheath, which is then filled with Grade “A” Magnesium Oxide powder (MgO). The filled tube is then compacted by a roll reduction mill into a solid mass, permanently stabilizing the coil in the center of the tube while providing excellent heat transfer and dielectric strength between the coil and the sheath.
No options available for this section based on your selections
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Incoloy 840
Nickel 18-20%, Chromium 18-22%, Iron balance. Has about 10% less nickel than Incoloy 800. Used in many air heating applications, where it has exhibited superior oxidation resistance at less cost than Incoloy 800.
Nickel 18-20%, Chromium 18-22%, Iron balance. Has about 10% less nickel than Incoloy 800. Used in many air heating applications, where it has exhibited superior oxidation resistance at less cost than Incoloy 800.
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Incoloy 800
Nickel 30-35%, Chromium 19-23%, Iron balance. The high nickel content of this alloy contributes to its resistance to scaling and corrosion. Used in air heating and immersion heating of potable water and other liquids.
Nickel 30-35%, Chromium 19-23%, Iron balance. The high nickel content of this alloy contributes to its resistance to scaling and corrosion. Used in air heating and immersion heating of potable water and other liquids.
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316/316L Stainless Steel
Chromium 16-18%, Nickel 11-14%, Iron balance. (316L – Low Carbon) Modified with the addition of Molybdenum (2-3%) to improve corrosion resistance in certain environments, especially those which would tend to cause pitting due to the presence of chlorides. Applications include deionized water. Maximum Sheath Temperature: 1200°F / 649°C
Chromium 16-18%, Nickel 11-14%, Iron balance. (316L – Low Carbon) Modified with the addition of Molybdenum (2-3%) to improve corrosion resistance in certain environments, especially those which would tend to cause pitting due to the presence of chlorides. Applications include deionized water. Maximum Sheath Temperature: 1200°F / 649°C
316L (low carbon) is used for Finned Tubular Heaters.
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304/304L Stainless Steel
Chromium 18-20%, Nickel 8-11%, Iron balance. (304L – Low Carbon) Used in the food industry, medical, and chemical heating. Maximum Sheath Temperature: 1200°F (649°C)
Chromium 18-20%, Nickel 8-11%, Iron balance. (304L – Low Carbon) Used in the food industry, medical, and chemical heating. Maximum Sheath Temperature: 1200°F (649°C)
304L (low carbon) is used for Finned Tubular Heaters.
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321 Stainless Steel
Chromium 17-20%, Nickel 9-13%, Iron balance. Modified with the addition of Titanium to prevent carbide precipitation and resulting intergranular corrosion that can take place in certain mediums when operating in the 800-1200°F (427-649°C) temperature range.
Chromium 17-20%, Nickel 9-13%, Iron balance. Modified with the addition of Titanium to prevent carbide precipitation and resulting intergranular corrosion that can take place in certain mediums when operating in the 800-1200°F (427-649°C) temperature range.
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Copper
Standard Copper Alloy A low temperature, inexpensive material used mainly for clean water heating. Maximum Sheath Temperature: 350°F / 177°C
Low Carbon Used for high to low viscosity oils, asphalt, tar, wax, molten salt, heat transfer liquid media and other compatible solutions.
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Inconel 600
Iron 6-10%, Chromium 14-17%, Nickel balance Maximum Sheath Temperature: 1800°F / 982°C Available for a limited number of diameters. Consult Tempco for more information.
Iron 6-10%, Chromium 14-17%, Nickel balance Maximum Sheath Temperature: 1800°F / 982°C Available for a limited number of diameters. Consult Tempco for more information.
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Incoloy 825
Nickel 38-46%, Chromium 19.5-23.5%, Molybdenum 2.5-3.5%, Iron balance Available for a limited number of diameters. Consult Tempco for more information.
Nickel 38-46%, Chromium 19.5-23.5%, Molybdenum 2.5-3.5%, Iron balance Available for a limited number of diameters. Consult Tempco for more information.
Mounting Options
No options available for this section based on your selections
Type B – Bulkhead Fittings
Bulkhead fittings provide a leakproof method for mounting tubular heating elements through tank walls. Standard are round brass fittings crimped onto the element that are suitable for low pressure water (up to 80 psig) and non-pressure air. A brass hex nut, plated steel washer and gasket are supplied as standard.
Bulkhead fittings provide a leakproof method for mounting tubular heating elements through tank walls. Standard are round brass fittings crimped onto the element that are suitable for low pressure water (up to 80 psig) and non-pressure air. A brass hex nut, plated steel washer and gasket are supplied as standard.
Fittings for vacuum or high pressure gas and liquid use are silver brazed or TIG welded. Method will vary by material and application. Fittings in table are most commonly used. Special fittings can be made to meet your application requirements.
Standard fitting location is with threads flush at the end of the element sheath as shown below. For other locations specify distance from end of sheath.
Tubular Diameter
FittingMaterial
Flange Type
“A”
“B”
“C”
ThreadSize
in
mm
in
mm
in
mm
in
mm
(UNF)
.260
6.6
Brass
Round
3/4
19
1/2
12.7
5/8
16
1/2-20
.260
6.6
Stn. Stl.
Round
3/4
19
1/2
12.7
5/8
16
1/2-20
.315
8.0
Brass
Round
3/4
19
1/2
12.7
5/8
16
1/2-20
.315
8.0
Stn. Stl.
Round
3/4
19
1/2
12.7
5/8
16
1/2-20
.375
9.5
Brass
Round
3/4
19
1/2
12.7
5/8
16
1/2-20
.375
9.5
Stn. Stl.
Round
3/4
19
1/2
12.7
5/8
16
1/2-20
.430
10.9
Brass
Round or Hex
7/8
22
3/4
19.0
7/8
22
5/8-18
.430
10.9
Stn. Stl.
Round or Hex
7/8
22
3/4
19.0
7/8
22
5/8-18
.430
10.9
Steel
Round
7/8
22
3/4
19.0
7/8
22
5/8-18
.475
12.1
Brass
Round
7/8
22
3/4
19.0
7/8
22
5/8-18
.475
12.1
Stn. Stl.
Round
7/8
22
3/4
19.0
7/8
22
5/8-18
.475
12.1
Steel
Round
7/8
22
3/4
19.0
7/8
22
5/8-18
.475
12.1
Brass
Round
1
25
3/4
19.0
7/8
22
3/4-16
.475
12.1
Stn. Stl.
Round
1
25
3/4
19.0
7/8
22
3/4-16
.625
15.9
Stn. Stl.
Round
1-1/8
29
3/4
19.0
1
25
7/8-14
Optional Larger Thread Sizes and Hex Flanged Bulkhead Fittings are available. Consult Tempco with your requirements
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Element Diameters .260″ and .315″ – not available for Finned Tubular Heaters
Type MC – Mounting Collar
Plated steel mounting collars are locked in place with a set-screw and serve as an adjustable stop for through-the-wall mounting. Collars are shipped in bulk unless otherwise specified. Mounting collars can be ordered with the heater or purchased separately.ting collars are locked in place with a set-screw and serve as an adjustable stop for through-the-wall mounting.
Plated steel mounting collars are locked in place with a set-screw and serve as an adjustable stop for through-the-wall mounting. Collars are shipped in bulk unless otherwise specified. Mounting collars can be ordered with the heater or purchased separately.ting collars are locked in place with a set-screw and serve as an adjustable stop for through-the-wall mounting.
Part Number
For Elementhiameter
“A”
Thick
“B”
OD
in
mm
in
mm
in
mm
FAS-108-108
.260
6.6
5/16
7.9
5/8
15.9
FAS-108-108
.315
8.0
5/16
7.9
5/8
15.9
FAS-108-103
.375
9.5
3/8
9.5
3/4
19.1
FAS-108-104
.430
10.9
7/16
11.1
7/8
22.2
FAS-108-106
.475
12.0
7/16
11.1
1
25.4
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Element Diameter .625″ – not available
Element Diameters .260″ and .315″ – not available for Finned Tubular Heaters
Type LR – Locator Washer
Locator washers are permanently attached to the heater sheath by staking/crimping and are used to limit the movement of the heater while allowing for expansion and contraction of the heater sheath.
Locator washers are permanently attached to the heater sheath by staking/crimping and are used to limit the movement of the heater while allowing for expansion and contraction of the heater sheath.
Type MF – Mounting Bracket
An economical way to mount the heater in non-pressurizing, non-liquid applications.
An economical way to mount the heater in non-pressurizing, non-liquid applications.
Surface Treatments
No options available for this section based on your selections
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Black chrome oxide
The standard tubular heater element surface finish is a black chrome oxide, produced when the element is annealed prior to forming in an exothermic atmosphere furnace.
The standard tubular heater element surface finish is a black chrome oxide, produced when the element is annealed prior to forming in an exothermic atmosphere furnace.
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Bright Annealing
An option where the tubular heater is annealed in a dissociated ammonia atmosphere furnace. This produces a clean metallic appearance without surface-etching the sheath.
An option where the tubular heater is annealed in a dissociated ammonia atmosphere furnace. This produces a clean metallic appearance without surface-etching the sheath.
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Electro-Polishing
An electrochemical process that removes surface imperfections and contaminants, enhancing the corrosion resisting ability of the sheath. The resulting surface is clean, smooth and has a bright finish; it is highly recommended for medical, food and other harsh applications.
An electrochemical process that removes surface imperfections and contaminants, enhancing the corrosion resisting ability of the sheath. The resulting surface is clean, smooth and has a bright finish; it is highly recommended for medical, food and other harsh applications.
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Passivation
Removes surface contamination, usually iron, so that the optimum corrosion resistance of the stainless steel is maintained. Surface contamination could come from the small amount of steel that may be worn off a tool during the manufacturing process.
Removes surface contamination, usually iron, so that the optimum corrosion resistance of the stainless steel is maintained. Surface contamination could come from the small amount of steel that may be worn off a tool during the manufacturing process.
Electrical Terminations
No options available for this section based on your selections
Element Diameters .260″ and .315″ – not available for Finned Tubular Heaters
Type SF – Quick Connect Straight
1/4″ male (3/16″ optional) quick connect (slip-on) terminals are welded to the element terminal pin straight. They provide quick and easy installation of lead wire with excellent holding force. Specify if an optional mica or ceramic insulator is required. Material: Nickel-Plated Steel.
1/4″ male (3/16″ optional) quick connect (slip-on) terminals are welded to the element terminal pin straight. They provide quick and easy installation of lead wire with excellent holding force. Specify if an optional mica or ceramic insulator is required. Material: Nickel-Plated Steel.
Type SF9 – Quick Connect 90°
1/4″ male (3/16″ optional) quick connect (slip-on) terminals are welded to the element terminal pin at 90° to the sheath. They provide quick and easy installation of lead wire with excellent holding force. Specify if an optional mica or ceramic insulator is required. Material: Nickel-Plated Steel.
1/4″ male (3/16″ optional) quick connect (slip-on) terminals are welded to the element terminal pin at 90° to the sheath. They provide quick and easy installation of lead wire with excellent holding force. Specify if an optional mica or ceramic insulator is required. Material: Nickel-Plated Steel.
Type L – Terminal Lug
A nickel-plated steel lug is projection welded to the terminal pin straight. Standard LA, 10-32 screw Optional LB, 8-32 screw
A nickel-plated steel lug is projection welded to the terminal pin at 90° to the sheath).Standard L9A, 10-32 screw Optional L9B, 8-32 screw
Type E – Terminal Lug Right Angle
Type E1A 8-32 screw with mica insulator (Standard) Type E1B 8-32 screw with ceramic insulator Type E2A 10-32 screw with mica insulator Type E2B 10-32 screw with ceramic insulator
Type E1A 8-32 screw with mica insulator (Standard) Type E1B 8-32 screw with ceramic insulator Type E2A 10-32 screw with mica insulator Type E2B 10-32 screw with ceramic insulator
Type F1A 250°C (482°F) TGGT insulation Type F1B 450°C (842°F) MGT insulation Type F1C 200°C (392°F) Teflon® insulation Type F1D 150°C (302°F) Silicone Rubber insulation Type F1E 105°C (221°F) Thermoplastic (PVC) insulation
F1C F1D & F1E available with optional heat shrink sleeving.
When selecting a lead wire type, consideration should be given to the maximum ambient temperature the lead wire is exposed to and the environment it is in.
Standard 10″ (254 mm) leads with fiberglass sleeve. Specify if other lead length is required.
Termination Options
No options available for this section based on your selections
Type R1 – Flexible Armor Cable
Type R1A Galvanized cable Type R1B Stainless steel cable Provides excellent protection to lead wires in abrasive environments. Standard 10″ (254 mm) armor cable over 12″ (305 mm) leads.
Type R1A Galvanized cable Type R1B Stainless steel cable Provides excellent protection to lead wires in abrasive environments. Standard 10″ (254 mm) armor cable over 12″ (305 mm) leads.
Type W1 – Stainless Steel Wire Braid
Provides good protection to lead wires where flexibility is needed. Standard 10″ (254 mm) braid over 12″ (305 mm) leads.
Ceramic to metal seals provide an airtight seal for temperatures to 500°F (260°C) in the seal area.
HeaterDiameter
“A”
“B”
Thread
in
mm
in
mm
in
mm
Size
.260
6.6
1-11/16
43
13/32
10
8-32
.315
8.0
1-11/16
43
13/32
10
10-32
.430
10.9
2-1/8
54
21/32
17
1/4-28
.475
12.1
2-1/8
54
21/32
17
1/4-28
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Element Diameters .475″ and .625″ – not available
Additional Options
No options available for this section based on your selections
Single-Ended Heater
Single ended tubular heaters are made strictly per customer request, providing an economical alternative to cartridge heater applications, simplifying wiring and installation for applications requiring localized heat. Flanges, bulkhead and NPT fittings can be attached to the sheath for mounting or immersion heating applications. Contact Tempco for complete details.
Single ended tubular heaters are made strictly per customer request, providing an economical alternative to cartridge heater applications, simplifying wiring and installation for applications requiring localized heat. Flanges, bulkhead and NPT fittings can be attached to the sheath for mounting or immersion heating applications. Contact Tempco for complete details.
Type W1 – Stainless Steel Wire Braid Provides good protection to lead wires where flexibility is needed. Standard 10″ (254 mm) braid over 12″ (305 mm) leads. Termination Options Additional Options Basic Applications Bracket Collar Electrical Terminations Fitting Incoloy® Lead Wire Lead Wire Protection Moisture Seals Mounting Options Other Sheath Materials Single-Ended Special Finish Stainless Steel Standard Finish Steel Surface Treatments Vacuum Applications Washer Type TM – Stud with Mica Insulator Threaded stud terminal with mica insulator. Element Diameters .260" and .315" – not available for Finned Tubular Heaters Screw Terminals Type T – Stud Terminal Threaded stud terminal with ceramic insulator. Type SS – Silicone Resin Seal A brushed-on coating that penetrates the MgO, offering economical moisture protection under humid storage conditions./ Maximum Usable Termination Temperature: 390°F (200°C) UL Rated Maximum Termination Temperature: 221°F (105°C) Type V2A: conformal coating Type V2B: silicone oil Lugs Pins Type SHE – Epoxy Resin Seal Epoxy resin provides a moisture resisting barrier. UL Rated – Maximum Termination Temperature: Type V: 194°F (90°C) Type V1: 266°F (130°C) Type V4: 392°F (200°C) Type SF9 – Quick Connect 90° 1/4″ male (3/16″ optional) quick connect (slip-on) terminals are welded to the element terminal pin at 90° to the sheath. They provide quick and easy installation of lead wire with excellent holding force. Specify if an optional mica or ceramic insulator is required. Material: Nickel-Plated Steel. Type SF – Quick Connect Straight 1/4″ male (3/16″ optional) quick connect (slip-on) terminals are welded to the element terminal pin straight. They provide quick and easy installation of lead wire with excellent holding force. Specify if an optional mica or ceramic insulator is required. Material: Nickel-Plated Steel. Type SER – RTV Seal RTV (room temperature vulcanizing) silicone rubber adhesive sealant provides a good moisture seal. UL Rated – Maximum Termination Temperature: Type R: 302°F (150°C) Type R1: 392°F (200°C) Type R1 – Flexible Armor Cable Type R1A Galvanized cable Type R1B Stainless steel cable Provides excellent protection to lead wires in abrasive environments. Standard 10″ (254 mm) armor cable over 12″ (305 mm) leads. Type P – Plain Pin Plain terminal pin. Specify Length “L.” Standard 1/2″ (12.7 mm) pin length. Type MF – Mounting Bracket An economical way to mount the heater in non-pressurizing, non-liquid applications. Type MC – Mounting Collar Plated steel mounting collars are locked in place with a set-screw and serve as an adjustable stop for through-the-wall mounting. Collars are shipped in bulk unless otherwise specified. Mounting collars can be ordered with the heater or purchased separately.ting collars are locked in place with a set-screw and serve as an adjustable stop for through-the-wall mounting. Element Diameter .625" – not available Element Diameters .260" and .315" – not available for Finned Tubular Heaters Type M – Self-Sealing Heat Shrinkable Boot This type seal is used primarily for defrost heaters. Temperature range -67 to 300°F (-55 to 149°C). Standard 10″ (254 mm) leads; specify longer leads if required. Element Diameters .430", .475" and .625" – not available Type LR – Locator Washer Locator washers are permanently attached to the heater sheath by staking/crimping and are used to limit the movement of the heater while allowing for expansion and contraction of the heater sheath. Type L9 – Terminal Lug 90° A nickel-plated steel lug is projection welded to the terminal pin at 90° to the sheath).Standard L9A, 10-32 screw Optional L9B, 8-32 screw Type L – Terminal Lug A nickel-plated steel lug is projection welded to the terminal pin straight. Standard LA, 10-32 screw Optional LB, 8-32 screw Type H – Hermetic Seal Ceramic to metal seals provide an airtight seal for temperatures to 500°F (260°C) in the seal area. Element Diameters .475" and .625" – not available Type F1 – Lead Wire Type F1A 250°C (482°F) TGGT insulation Type F1B 450°C (842°F) MGT insulation Type F1C 200°C (392°F) Teflon® insulation Type F1D 150°C (302°F) Silicone Rubber insulation Type F1E 105°C (221°F) Thermoplastic (PVC) insulation F1C F1D & F1E available with optional heat shrink sleeving. When selecting a lead wire type, consideration should be given to the maximum ambient temperature the lead wire is exposed to and the environment it is in. Standard 10″ (254 mm) leads with fiberglass sleeve. Specify if other lead length is required. Type E – Terminal Lug Right Angle Type E1A 8-32 screw with mica insulator (Standard) Type E1B 8-32 screw with ceramic insulator Type E2A 10-32 screw with mica insulator Type E2B 10-32 screw with ceramic insulator Type B – Bulkhead Fittings Bulkhead fittings provide a leakproof method for mounting tubular heating elements through tank walls. Standard are round brass fittings crimped onto the element that are suitable for low pressure water (up to 80 psig) and non-pressure air. A brass hex nut, plated steel washer and gasket are supplied as standard. Fittings for vacuum or high pressure gas and liquid use are silver brazed or TIG welded. Method will vary by material and application. Fittings in table are most commonly used. Special fittings can be made to meet your application requirements. Standard fitting location is with threads flush at the end of the element sheath as shown below. For other locations specify distance from end of sheath. Type A – Right Angle Terminal For use when space is tight. Low Carbon Used for high to low viscosity oils, asphalt, tar, wax, molten salt, heat transfer liquid media and other compatible solutions. Single-Ended Heater Single ended tubular heaters are made strictly per customer request, providing an economical alternative to cartridge heater applications, simplifying wiring and installation for applications requiring localized heat. Flanges, bulkhead and NPT fittings can be attached to the sheath for mounting or immersion heating applications. Contact Tempco for complete details. Specifications Material: 304SS, 316SS, Monel, Steel Min. Sheath Length: 11″ Max. Sheath Length: 96″ Max. Volts: 277 Vac Max. Amperage: 30 Amp Element Diameter .260" – not available Passivation Removes surface contamination, usually iron, so that the optimum corrosion resistance of the stainless steel is maintained. Surface contamination could come from the small amount of steel that may be worn off a tool during the manufacturing process. Incoloy 840 Nickel 18-20%, Chromium 18-22%, Iron balance. Has about 10% less nickel than Incoloy 800. Used in many air heating applications, where it has exhibited superior oxidation resistance at less cost than Incoloy 800. Incoloy 800 Nickel 30-35%, Chromium 19-23%, Iron balance. The high nickel content of this alloy contributes to its resistance to scaling and corrosion. Used in air heating and immersion heating of potable water and other liquids. Incoloy 825 Nickel 38-46%, Chromium 19.5-23.5%, Molybdenum 2.5-3.5%, Iron balance Available for a limited number of diameters. Consult Tempco for more information. Inconel 600 Iron 6-10%, Chromium 14-17%, Nickel balance Maximum Sheath Temperature: 1800°F / 982°C Available for a limited number of diameters. Consult Tempco for more information. Electro-Polishing An electrochemical process that removes surface imperfections and contaminants, enhancing the corrosion resisting ability of the sheath. The resulting surface is clean, smooth and has a bright finish; it is highly recommended for medical, food and other harsh applications. Copper Standard Copper Alloy A low temperature, inexpensive material used mainly for clean water heating. Maximum Sheath Temperature: 350°F / 177°C Bright Annealing An option where the tubular heater is annealed in a dissociated ammonia atmosphere furnace. This produces a clean metallic appearance without surface-etching the sheath. Black chrome oxide The standard tubular heater element surface finish is a black chrome oxide, produced when the element is annealed prior to forming in an exothermic atmosphere furnace. 321 Stainless Steel Chromium 17-20%, Nickel 9-13%, Iron balance. Modified with the addition of Titanium to prevent carbide precipitation and resulting intergranular corrosion that can take place in certain mediums when operating in the 800-1200°F (427-649°C) temperature range. 304/304L Stainless Steel Chromium 18-20%, Nickel 8-11%, Iron balance. (304L – Low Carbon) Used in the food industry, medical, and chemical heating. Maximum Sheath Temperature: 1200°F (649°C) 304L (low carbon) is used for Finned Tubular Heaters. 316/316L Stainless Steel Chromium 16-18%, Nickel 11-14%, Iron balance. (316L – Low Carbon) Modified with the addition of Molybdenum (2-3%) to improve corrosion resistance in certain environments, especially those which would tend to cause pitting due to the presence of chlorides. Applications include deionized water. Maximum Sheath Temperature: 1200°F / 649°C 316L (low carbon) is used for Finned Tubular Heaters.
