Milled Groove Tubular Heaters

Precision Formed to Your Hot Runner Mold Applications

WATROD milled groove heaters are precision-formed and customized to your hot runner mold application. Even tight radius bends of 0.250 inch maintaining tolerances of ±0.062 to ±0.002 inch are possible. This capability not only allows you freedom to design for the optimum uniform heating pattern for your plastics process, but also guarantees quick and easy installation.

Simply send your groove dimensions in a detailed drawing or on CAD file. Depending on the formation requirements, the resulting CAD design will be transferred to either Watlow's CNC bending equipment or a highly skilled bending operator.

A variety of sheath materials are available including alloy 800, 304 stainless steel and 316 stainless steel, each offering unique advantages of long life in high temperature molds, rigidity to maintain shape during shipment and corrosion resistance.

Watlow not only delivers the heat fast to the process with efficient heat transfer, but guarantees the heater's fast delivery, too. While Watlow guarantees standard delivery within three to four weeks, tough delivery schedules are Watlow's specialty.

features & benefits

Precise conformity to customer specifications ensures easy installation

Alloy 800 sheath material are corrosion resistant and capable in high-temperature environments

304 stainless steel features excellent pliability - best choice for small bend radii

Superior resistance coil design produces even heating

Threaded stud or lead wire termination as required provides robust options for challenging environments


Maximum Operating Temperatures
Maximum Watt Densities
304 Stainless Steel 1200 650 60 9.3
Alloy 800 1600 870 60 9.3

related documentation

  • Brochures

    Complete Thermal System Solutions for Plastics Processing

  • Catalogs

    Thermal Component Reference Guide

    Heater Catalog (Section) - Agency Certifications

    Heater Catalog (Section) - Heater Reference Data

    Heater Catalog (Section) - Heater Selection Matrix

    Heater Catalog (Section) - Tubular Heaters

    Heaters Catalog

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quality certificates 2

ISO 9001-2008 Hannibal

ISO 90012008 Certificate - Tubular Heaters - Shanghai