Single-Ended (Cartridge) Heating Tubes

Product Introduction

Single-Ended (Cartridge) Heating Tubes

High power density in a compact design with wiring on one side. Ideal for: Mold heating, packaging machinery, and medical equipment.

Named for their single-sided lead wire design, these heaters offer extremely high power density. They are the standard for precision heating in tight spaces.

We specialize in high-precision tolerances (down to $\pm 0.02\text{mm}$). If your imported machinery has a failed heater with rare dimensions, we can replicate it perfectly to ensure a snug fit.

Technical Specifications	Range / Typical Values
Voltage Range	12V – 440V
Power Density	Up to 25W/cm2 (High-wattage types)
Resistance Range	1Ω – 1000Ω
Current Range	0.5A – 20A
Diameter Range	Φ3mm – Φ25mm (Metric & Imperial)

Heating Tubes

Precision Industrial Heating Elements: Engineered for Your Exact Needs

At Runkel, we don’t just manufacture heating tubes; we provide thermal solutions. Our core strength lies in our unmatched customization capabilities.

Whether you are a researcher needing 1–2 prototype samples for a new project, or a maintenance manager looking to replace a discontinued or aging heating element in your existing machinery, we deliver perfect-fit solutions with no minimum order hurdles.

Why Choose Us? — The Customization Specialist

“From 1 unit to 1,000—we treat every prototype with production-grade precision.”

Zero Minimum Order Quantity (No MOQ)——Most factories turn away small orders. We embrace them. If you need a single tube for a performance test or a rare replacement, we are your dedicated partner.
Perfect Replacement & Retrofitting——Is your old equipment failing because the original parts are no longer available? Send us your drawings, photos, or the physical old part. We will reverse-engineer a 1:1 precision replacement that fits your existing mounting holes and electrical specs perfectly.
Bespoke Engineering Specs——Materials: SUS304, 316L, 310S (High Temp), Incoloy, Titanium, and more.——Dimensions: Diameters from 3mm to 25mm+, custom lengths, and complex bending.Electrical: Optimized for your specific voltage (12V to 480V) and wattage requirements.

How We Work

Engineering Review: Our team verifies the power density and material compatibility for your application.
Agile Production: Your custom order enters our flexible production line immediately.
Quality Assurance: Every unit undergoes rigorous insulation and leakage current testing before shipping.

Product Introduction