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Flexible Tubular Heating Elements

Flexible Tubular Heating Element

Flexible tubular heating elements are engineered to deliver consistent, reliable heat in applications where traditional heaters can’t conform. Designed to bend and shape around complex surfaces, these elements provide even temperature distribution and exceptional thermal control — all while maintaining durability in demanding environments.

Perfect for industrial machinery, medical devices, food processing, and packaging systems, flexible tubular heaters offer customizable watt densities, diameters, and lengths to match your exact design needs. Their robust construction ensures long service life, reduced maintenance, and superior energy efficiency.

Key Benefits

  • Bendable design for tight spaces and complex geometries

  • Uniform heating for improved process control and product quality

  • Fast heat response with efficient energy transfer

  • Durable construction for high-performance and long-term reliability

  • Custom configurations to fit unique applications

Whether you’re improving an existing design or developing a new system, flexible tubular heating elements give you the freedom to heat precisely where it’s needed most.

User-formable, heavy-duty design: the heater uses a flexible solid casing that remains seated in the groove, yet is easy to install.

Optimised durability: manufactured with an inner layer of highly compressed copper powder, contributing to increased durability while maintaining flexibility. 

Marked at the center and cold sections: clear visual indicators for installation. 

Made in the U.S. and available for next-day shipping in standard straight lengths. 

Technical Specifications:

    • Maximum temperature up to 371 °C (700 °F) in standard diameters. 

    • Minimum Bending Radius (Inside) ⌀ 8.0 / ⌀ 8.5 mm = R10 mm, ⌀ 6.5 mm = R6.5 mm
    • High voltage stability: 1000 VAC,

    • Insulation resistance ≥ 50 MΩ @ 500 VDC. 

    • Leakage current ≤ 0.5 mA @ 253 VAC. 

    • Wattage tolerance ±10%.

    • Max Voltage 250 VAC
    • Diameter Tolerance Nominal ⌀ ± 0.10mm
    • Length Tolerance ±1.5%
      Thermal image flexilbe tubular element Thermal image demonstrating the heating efficiency of the flex tubular heater placed within a manifold.

Flexible Tublar Heating Elements
Flex Tubular Details

Connectors

SCREW TERMINAL (STANDARD)

PLUG N HEAT CERAMIC INSULATIED

LEAD WIRE ADAPTER KIT

The Lead Adapter Kit is an optional add-on designed for Ø8.0 mm and Ø8.5 mm flexible tubular heating elements. It provides a safe, high-temperature connection for a 1,000 mm (40″) lead wire and can be reused for servicing or maintenance. Each kit is designed for one heater, with extended lead wire lengths available upon request.

Key Features

  • Secure, high-temperature electrical connection

  • Reusable design for long-term serviceability

  • Compatible with Ø8.0 mm and Ø8.5 mm flexible tubular heating elements

  • Standard 1,000 mm (40″) lead length; custom options available

AVAILABLE SIZES

Part Number Length (mm) Heated Length (mm) Wattage Availability Voltage
65R-0300 300 240 350 W Build 230V
65R-0350 350 290 400 W Build 230V
65R-0400 400 340 500 W Stock 230V
65R-0450 450 390 600 W Stock 230V
65R-0500 500 440 650 W Stock 230V
65R-0550 550 490 700 W Stock 230V
65R-0600 600 540 800 W Stock 230V
65R-0650 650 590 850 W Stock 230V
65R-0700 700 640 900 W Stock 230V
65R-0750 750 690 1000 W Stock 230V
65R-0800 800 740 1100 W Stock 230V
65R-0850 850 790 1200 W Build 230V
65R-0900 900 840 1300 W Build 230V
65R-0950 950 890 1350 W Build 230V
65R-1000 1000 940 1400 W Build 230V
65R-1050 1050 990 1450 W Build 230V
65R-1100 1100 1040 1500 W Build 230V
65R-1150 1150 1090 1550 W Build 230V
65R-1200 1200 1140 1600 W Build 230V
65R-1250 1250 1190 1650 W Build 230V
65R-1300 1300 1240 1700 W Build 230V
65R-1350 1350 1290 1800 W Build 230V
65R-1400 1400 1340 1900 W Build 230V
65R-1450 1450 1390 2000 W Build 230V
65R-1500 1500 1440 2100 W Build 230V
Part Number Length (mm) Heated Length (mm) Wattage Availability Voltage
80R-0300 300 240 560 W Stock 240V
80R-0350 350 290 675 W Stock 240V
80R-0400 400 340 795 W Stock 240V
80R-0425 425 365 850 W Stock 240V
80R-0450 450 390 910 W Stock 240V
80R-0475 475 415 970 W Stock 240V
80R-0500 500 240 1025 W Stock 240V
80R-0525 525 465 1090 W Stock 240V
80R-0550 550 490 1145 W Stock 240V
80R-0575 575 515 1200 W Stock 240V
80R-0600 600 540 1260 W Stock 240V
80R-0625 625 565 1320 W Stock 240V
80R-0650 650 590 1380 W Stock 240V
80R-0675 675 615 1440 W Stock 240V
80R-0700 700 640 1495 W Stock 240V
80R-0725 725 665 1550 W Stock 240V
80R-0750 750 690 1615 W Stock 240V
80R-0775 775 715 1670 W Stock 240V
80R-0800 800 740 1730 W Stock 240V
80R-0850 850 790 1845 W Stock 240V
80R-0900 900 840 1960 W Stock 240V
80R-0950 950 890 2080 W Stock 240V
80R-1000 1000 940 2195 W Stock 240V
80R-1050 1050 990 2315 W Stock 240V
80R-1100 1100 1040 2430 W Stock 240V
80R-1150 1150 1090 2545 W Stock 240V
80R-1200 1200 1140 2665 W Stock 240V
80R-1250 1250 1190 2780 W Stock 240V
80R-1300 1300 1240 2895 W Stock 240V
80R-1350 1350 1290 3015 W Stock 240V
80R-1400 1400 1340 3130 W Stock 240V
80R-1450 1450 1390 3245 W Stock 240V
Part Number Length (mm) Heated Length (mm) Wattage (W) Availability Voltage
85R-0300 300 240 650 Build 230V
85R-0350 350 290 750 Build 230V
85R-0400 400 340 795 Build 230V
85R-0425 425 365 975 Build 230V
85R-0450 450 390 1050 Build 230V
85R-0475 475 415 1100 Build 230V
85R-0500 500 240 1150 Stock 230V
85R-0525 525 465 1225 Stock 230V
85R-0550 550 490 1300 Stock 230V
85R-0575 575 515 1375 Stock 230V
85R-0600 600 540 1450 Stock 230V
85R-0625 625 565 1525 Stock 230V
85R-0650 650 590 1600 Stock 230V
85R-0675 675 615 1675 Build 230V
85R-0700 700 640 1750 Stock 230V
85R-0725 725 665 1825 Build 230V
85R-0750 750 690 1900 Stock 230V
85R-0775 775 715 1975 Build 230V
85R-0800 800 740 2050 Stock 230V
85R-0850 850 790 2200 Stock 230V
85R-0900 900 840 2350 Stock 230V
85R-0950 950 890 2500 Stock 230V
85R-1000 1000 940 2650 Stock 230V
85R-1050 1050 990 2800 Stock 230V
85R-1100 1100 1040 2930 Stock 230V
85R-1150 1150 1090 3060 Stock 230V
85R-1200 1200 1140 3190 Stock 230V
85R-1250 1250 1190 3320 Stock 230V
85R-1300 1300 1240 3450 Stock 230V
85R-1350 1350 1290 3580 Stock 230V
85R-1400 1400 1340 3600 Stock 230V
85R-1450 1450 1390 3600 Stock 230V
85R-1500 1500 1240 3600 Stock 230V
Part Number Length (mm) Heated Length (mm) Wattage (W) Availability Voltage
60SQ-0300 300 240 350 Build 230V
60SQ-0350 350 290 400 Build 230V
60SQ-0400 400 340 500 Stock 230V
60SQ-0450 450 390 600 Stock 230V
60SQ-0500 500 440 650 Stock 230V
60SQ-0550 550 490 700 Stock 230V
60SQ-0600 600 540 800 Stock 230V
60SQ-0650 650 590 850 Stock 230V
60SQ-0700 700 640 900 Stock 230V
60SQ-0750 750 690 1000 Stock 230V
60SQ-0800 800 740 1100 Stock 230V
60SQ-0850 850 790 1200 Build 230V
60SQ-0900 900 840 1300 Build 230V
60SQ-0950 950 890 1350 Build 230V
60SQ-1000 1000 940 1400 Build 230V
60SQ-1050 1050 990 1450 Build 230V
60SQ-1100 1100 1040 1500 Build 230V
60SQ-1150 1150 1090 1550 Build 230V
60SQ-1200 1200 1140 1600 Build 230V
60SQ-1250 1250 1190 1650 Build 230V
60SQ-1300 1300 1240 1700 Build 230V
60SQ-1350 1350 1290 1800 Build 230V
60SQ-1400 1400 1340 1900 Build 230V
60SQ-1450 1450 1390 2000 Build 230V
60SQ-1500 1500 1440 2100 Build 230V
Part Number Length (mm) Heated Length (mm) Wattage (W) Availability Voltage
80SQ-0300 300 240 650 Build 230V
80SQ-0350 350 290 750 Build 230V
80SQ-0400 400 340 795 Build 230V
80SQ-0425 425 365 975 Build 230V
80SQ-0450 450 390 1050 Build 230V
80SQ-0475 475 415 1100 Build 230V
80SQ-0500 500 240 1150 Stock 230V
80SQ-0525 525 465 1225 Stock 230V
80SQ-0550 550 490 1300 Stock 230V
80SQ-0575 575 515 1375 Stock 230V
80SQ-0600 600 540 1450 Stock 230V
80SQ-0625 625 565 1525 Stock 230V
80SQ-0650 650 590 1600 Stock 230V
80SQ-0675 675 615 1675 Build 230V
80SQ-0700 700 640 1750 Stock 230V
80SQ-0725 725 665 1825 Build 230V
80SQ-0750 750 690 1900 Stock 230V
80SQ-0775 775 715 1975 Build 230V
80SQ-0800 800 740 2050 Stock 230V
80SQ-0850 850 790 2200 Stock 230V
80SQ-0900 900 840 2350 Stock 230V
80SQ-0950 950 890 2500 Stock 230V
80SQ-1000 1000 940 2650 Stock 230V
80SQ-1050 1050 990 2800 Stock 230V
80SQ-1100 1100 1040 2930 Stock 230V
80SQ-1150 1150 1090 3060 Stock 230V
80SQ-1200 1200 1140 3190 Stock 230V
80SQ-1250 1250 1190 3320 Stock 230V
80SQ-1300 1300 1240 3450 Stock 230V
80SQ-1350 1350 1290 3580 Stock 230V
80SQ-1400 1400 1340 3600 Stock 230V
80SQ-1450 1450 1390 3600 Stock 230V
80SQ-1500 1500 1240 3600 Stock 230V

Calculators

Power Flow Rate Temp Calculator

Calculate the electrical power, flow rate or temperature requirement.
airflow in standard cubic feet per minute
temperature rise in degrees F from the inlet to the exhaust
Watts = SCFM x ΔT/2.5

Temperature Conversion Calculator

Calculate the electrical power, flow rate or temperature requirement.
°F = ((( °C * 9) / 5 ) + 32)
°C = ((( °F - 32) * 5 ) / 9)

Three-Phase Unit Calculator

Fill in two values to find the 3rd.
W = LC * (V * √2)
V = (W / LC) / √2
LC = W / (V * √2)

Single Phase Unit Calculator

Fill in two values to find the 3rd.
W = LC * V
V = LC * W
LC = W / V

Ohms Law Calculator

Fill in two values to find the other two.

O = V / A

O = V² / W

O = W / A²

V = A * O = A * (V/A)

V = √(W * O)

V = W / A

A = V / O

A = W/ V

A = √(W / O)

W = A * V

W = V² / O

W = A² * O

Heat Transfer Through Convection Calculator

ρ = density (lb/ft3)

V = volume flow rate (ft3/hour)

Cp = specific heat (Btu/lb°F)

Ta-Tb = temperature differential (°F)

Q = ρ x V x Cp x (Ta-Tb)


Fill in four values

ρ = density (lb/ft3)
V = volume flow rate (ft3/hour)
Cp = specific heat (Btu/lb°F)
Ta-Tb = TD (°F)
Q = ρ x V x Cp x (Ta-Tb)

ACFM to SCFM

ACFM = airflow in actual cubic feet per minute

P = gage pressure (psi)

T = gas temperature °R = 460 + °F

SCFM = airflow in standard cubic feet per minute


Find Standard Cubic Feet per Minute based on data from your Actual Cubic Feet per Minute Rotameter

airflow in actual cubic feet per minute
gage pressure (psi)
gas temperature °R = 460 + °F
airflow in standard cubic feet per minute

Standard Flow Rate (SCFM) Calculator

Calculate the SCFM.
Actual cubic feet per minute
Actual pounds per square inch at Gauge
Actual temperature in °F. °R = 460 + °F
CFM * (PSI actual / 14.7psi)*(528°R / T actual)

Pressure Conversion

Fill in one value to calculate the other.
PSI = Bar * 14.504
Bar = PSI / 14.504

Mass Flow to volume Metric Flow

Fill in one value to calculate the other two
kg/h = Kilogram Per Hour (lb/min multiply by 27.216)
Lbs/min = Pounds per minute (kg/h divide by 27.216)
SCFM = Standard cubic feet per minute

Power converter for different voltage

Power converter for different voltage
Original voltage in volts (V)
Original power in watts (W)
new voltage in volts (V)
New Power = (New Voltage × Original Power) / Original Voltage

Power Flow Rate Temp Calculator

Calculate the electrical power, flow rate or temperature requirement.
airflow in standard cubic feet per minute
temperature rise in degrees F from the inlet to the exhaust
Watts = SCFM x ΔT/2.5

Temperature Conversion Calculator

Calculate the electrical power, flow rate or temperature requirement.
°C = ((( °F - 32) * 5 ) / 9)
°F = ((( °C * 9) / 5 ) + 32)

Three-Phase Unit Calculator

Fill in two values to find the 3rd.
W = LC * (V * √2)
V = (W / LC) / √2
LC = W / (V * √2)

Single Phase Unit Calculator

Fill in two values to find the 3rd.
W = LC * V
V = LC * W
LC = W / V

Ohms Law Calculator

Fill in two values to find the other two.

O = V / A

O = V² / W

O = W / A²

V = A * O = A * (V/A)

V = √(W * O)

V = W / A

A = V / O

A = W/ V

A = √(W / O)

W = A * V

W = V² / O

W = A² * O

Heat Transfer Through Convection Calculator

ρ = density (lb/ft3)

V = volume flow rate (ft3/hour)

Cp = specific heat (Btu/lb°F)

Ta-Tb = temperature differential (°F)

Q = ρ x V x Cp x (Ta-Tb)


Fill in four values

ρ = density (lb/ft3)
V = volume flow rate (ft3/hour)
Cp = specific heat (Btu/lb°F)
Ta-Tb = TD (°F)
Q = ρ x V x Cp x (Ta-Tb)

ACFM to SCFM

ACFM = airflow in actual cubic feet per minute

P = gage pressure (psi)

T = gas temperature °R = 460 + °F

SCFM = airflow in standard cubic feet per minute


Find Standard Cubic Feet per Minute based on data from your Actual Cubic Feet per Minute Rotameter

airflow in actual cubic feet per minute
gage pressure (psi)
gas temperature °R = 460 + °F
airflow in standard cubic feet per minute

Standard Flow Rate (SCFM) Calculator

Calculate the SCFM.
Actual cubic feet per minute
Actual pounds per square inch at Gauge
Actual temperature in °F. °R = 460 + °F
CFM * (PSI actual / 14.7psi)*(528°R / T actual)

Pressure Conversion

Fill in one value to calculate the other.
PSI = Bar * 14.504
Bar = PSI / 14.504

Mass Flow to volume Metric Flow

Fill in one value to calculate the other two
Kg/h = Kilogram Per Hour (lb/min multiply by 27.216)
Lbs/min = Pounds per minute (kg/h divide by 27.216)
SCFM = Standard cubic feet per minute

Power converter for different voltage

Power converter for different voltage
Original voltage in volts (V)
Original power in watts (W)
new voltage in volts (V)
New Power = (New Voltage × Original Power) / Original Voltage