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Tubular Heater Options

Termination Types

Type T-Standard

Threaded stud terminal with ceramic insulator. Standard thread size is 6-32 for .260 (6.6 mm), 8-32 for .315 (8 mm) and 10-32 for all other diameters. Other thread sizes and lengths are available to accommodate any electrical requirements and clearance restrictions.

 Type TM—Stud with Mica Insulator

 Standard thread size is 6-32 for .260 (6.6 mm), 8-32 for .315 (8 mm) and 10-32 for all other diameters. Other thread sizes and lengths are available to accommodate any electrical requirements and clearance restrictions.
TYPE P—Plain Pin


Plain terminal pin. Specify Length “L”.
Standard — 1/2" (12.7 mm) pin length.

Element Diameter Nominal Pin Diameter
in mm in mm
0.26  6.6 0.091 2.3
0.315  8.0 0.105 2.7
0.375  9.5 0.105 2.7
0.43 10.9 0.125 3.2
0.475 12 0.125 3.2
0.625 15.9 0.160 4.1
Type SF & SF9 (90°)—Quick Connect

Male quick connect (slip-on) terminals are welded to the element terminal pin. They provide quick and easy installation of wires with excellent holding force. Material: Nickel-Plated Steel.
Type E

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 L & L9 (90°)—Terminal Lug

A nickel-plated steel lug is projection welded to the terminal pin straight (Type “L”) or at 90° to the sheath (Type “9L”).
Type F1__—Lead Wire

Type F1A Type TGGT (Teflon® tape, fiberglass, Teflon® treated overbraid) insulation rated to 482°F (250°C).
Type F1B Type MGT (mica tape, Teflon® treated overbraid) insulation rated to 842°F (450°C).
Standard 10" (254 mm) leads. Specify longer leads.
Wire gauge is determined by ampacity of heater and ambient temperature.

Type A—Right-Angle Terminal

Type A1A 8-32 screw with mica insulator
Type A1B 8-32 screw with ceramic insulator
Type A2A 10-32 screw with mica insulator
Type A2B 10-32 screw with ceramic insulator (Standard)
TYPE R1__—Flexible Armor Cable


Type R1A  Galvanized cable
Type R1B  Stainless steel cable
Provides excellent protection to lead wires in abrasive environments. Specify cable length and lead wire length.
Standard 10" (254 mm) armor cable over 12" (305 mm) leads. Specify longer leads or cable.

  

 

Mounting Methods

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.

 

Element
Diameter		 "A" "B"
in mm in mm in mm
0.26  6.6 5/16 7.1 5/8 15.9
0.315  8.0 3/8 8.7 3/4 19
0.375  9.5 7/16 11.1 7/8

22.2
0.43 10.9 7/16 11.1 7/8 22.2
0.475 12 7/16 11.1 1 25.4

 

 Type LR—Locator Ring

Locator rings are permanently attached to the heater sheath and are used to limit the movement of the heater while allowing for expansion and contraction of the heater sheath. When ordering specify location from end of sheath.
Type MF —Mounting Bracket

The 16 gauge Stainless Steel Mounting bracket is an economical way to mount the heater in non-pressurized, non liquid applications. Unless otherwise specified the bracket will be located 1/2" (13 mm) from the edge of the heater sheath.
Custom brackets of any size, thickness and material can also be supplied to meet your requirements.

 

Type B —Watertight Bulkhead Fittings

Bulkhead fittings provide a leak-proof method for mounting tubular heating elements through tank walls. A gasket, plated steel washer and brass hex jam nuts are included. Specify if a stainless steel washer and jam nut are required when ordering stainless steel fittings.
Standard mounting location is the threaded end of the bulkhead flush with the end of the element sheath. For other mounting locations specify distance from end of sheath to gasket surface on bulkhead.
Fittings are silver brazed or TIG welded to the element, depending on fitting material and customer application.
Fittings in table are the most commonly used. Special fittings can be manufactured to meet your requirements.
Specify: material, flange type, thread type and length.

 

Tubular
Diameter		 Fitting
Material		 Flange
Type		 "A" "B" "C" Thread
Size
(UNF)
in mm

in

 mm in mm in mm
0.26  6.6 Brass Round 3/4 19 1/2 12.7 5/8 16 1/2-20
0.26  6.6 Stn. Stl. Round 3/4 19 1/2 12.7 5/8 16 1/2-20
0.315  8.0 Brass Round 3/4 19 1/2 12.7 5/8 16 1/2-20
0.315  8.0 Stn. Stl. Round 3/4 19 1/2 12.7 5/8 16 1/2-20
0.375  9.5 Brass Round 3/4 19 1/2 12.7 5/8

16

 1/2-20
0.375  9.5 Stn. Stl. Round 3/4 19 1/2 12.7 5/8 16 1/2-20
0.43 10.9 Brass Round or Hex 7/8 22 3/4 19 7/8 22 5/8-18
0.43 10.9 Stn. Stl. Round or Hex 7/8 22 3/4 19 7/8 22 5/8-18
0.43 10.9 Steel Round 7/8 22 3/4 19 7/8 22 5/8-18
0.475 12.1 Brass Round 7/8 22 3/4 19 7/8 22 5/8-18
0.475 12.1 Stn. Stl. Round 7/8 22 3/4 19 7/8 22 5/8-18
0.475 12.1 Steel Round 7/8 22 3/4 19 7/8 22 5/8-18
0.475 12.1 Brass Round 1 25 3/4 19 7/8 22 3/4-16
0.475 12.1 Stn. Stl. Round 1 25 3/4 19 7/8 22 3/4-16
0.625 15.9 Stn. Stl. Round 1-1/8 32 3/4 19 1 25 7/8-14

 

 

Moisture Seals

Magnesium Oxide (MgO) is used as the insulating material in our tubular heaters because of its excellent thermal conductivity and dielectric strength. However, MgO is hygroscopic and can absorb moisture from the atmosphere.

For applications where moisture absorption would be unacceptable we have several optional element end seals to retard absorption of moisture in the MgO. If a true hermetic seal is required ceramic to metal end seals (Type H) are available. With any of these seals, the maximum recommended operating temperature must not be exceeded.

 

 

Style 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 Usable Termination Temperature: 221°F (105°C).
Type V2A: Conformal Coating.
Type V2B: Silicone Oil

Style SER—RTV Seal
RTV (room temperature vulcanizing) silicone rubber adhesive sealant provides a good moisture seal. 
UL Maximum Termination Temperature:
Type R: 302°F (150°C).
Type R1: 392°F (200°C).

Style SEH—Epoxy Resin Seal
Epoxy resin provides a moisture resisting barrier. 
UL rated-Maximum temperature
Type V: 194°F (90°C).
Type V1: 266°F (130°C).
Type V4: 392°F (200°C).
 

 Type H —Hermetic seal

Ceramic to Metal seals provide an airtight seal for temperatures to 500°F (260°C).

Heater
Diameter		 "A" "B" Thread
Size
in mm in mm in mm
0.260  6.6 1-11/16 43 13/32 15.9 8-32
0.315  8.0 1-11/16 43 13/32 19 10-32
0.43 10.9 2-1/8 54 21/32 22.2 1/4-28
0.475 12 2-1/8 54 21/32 25.4 1/4-28

 

 
 

Type M—Self Sealing Heat Shrinkable Boot with Lead Wire

Element
Diameter		 "A" "B"
in mm in mm in mm
0.260  6.6 2-1/8 54 7/16 11
0.315  8.0 2-1/8 54 7/16 11
0.43 10.9 2-1/8 54 9/16 14

This type seal is used primarily for defrost heaters. Temperature range - 67 to 300°F (-55 to 149°C).
10 inch (254 mm) long lead wires are standard.

 

 

 

 
 

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10100 Royalton Rd.
Cleveland, OH  44133 USA
Tel: 440-237-3200 - Fax 440-237-1744
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