YH High Temperature Resistant Silicone Rubber Flexible Cable for Heating Equipment, Furnace Wiring & High-Temp Industrial Internal Connection

For electrical design engineers, equipment R&D personnel, procurement managers, and plant project managers, we provide a detailed breakdown of model designations to help quickly clarify product positioning and structural characteristics:

The YH-type high-temperature resistant silicone rubber flexible cable is a specialized interconnect cable developed in-house for internal wiring in various electric heating devices and for applications in high-temperature work zones. It features ultra-fine, multi-strand flexible copper conductors and utilizes a co-extruded structure that integrates high-purity silicone rubber insulation and sheathing. Its key advantages include stable, long-term operation in sustained high-temperature environments and exceptional resistance to thermal-oxidative aging; notably, it does not melt or deform at high temperatures and maintains its insulating integrity.

Unlike conventional flexible cables—which are prone to aging, hardening, cracking, or insulation failure during prolonged use in environments exceeding 70°C—YH silicone rubber cables maintain stable flexibility and electrical insulation performance in high-temperature operating zones. These cables do not release toxic decomposition products under sustained heat and offer excellent resistance to bending and crushing, along with superior environmental adaptability. Manufacturers in sectors such as electric heating equipment, injection molding machinery, food baking equipment, metallurgical furnace engineering, and automation systems widely select YH cables for applications including internal wiring for heating bands, furnace connections, high-temperature cabinet wiring, and internal assembly wiring for thermal equipment. The product complies with national manufacturing standards for specialized high-temperature cables and third-party type-test requirements; comprehensive qualification documentation is available to meet the needs of factory product inspections, industrial project acceptance, and export declaration reviews.

• We offer customization options including long-term temperature ratings (180°C, 200°C, 250°C, 300°C, 350°C), sheath colors, cut-to-length services, tinned copper conductor upgrades, and flame-retardant modifications.
• We also assist with CCC, CE, and RoHS certifications to ensure compliance with environmental and market access requirements for overseas equipment.

Composed of tightly stranded, ultra-fine, flexible copper wires, this conductor offers exceptional resistance to bending fatigue, making it ideal for environments involving frequent assembly/disassembly or vibration—common in heating equipment applications. Its low DC resistance effectively minimizes heat generation during continuous operation, preventing localized overheating of the conductor itself. Conductor cross-sections range from 0.5 mm² to 35 mm², accommodating requirements from low-power heating elements to high-current industrial heating systems. Tinned copper conductors are available as an option to prevent oxidation and discoloration in high-temperature, high-humidity environments.

Manufactured using a high-purity silicone rubber extrusion process with strict in-line thickness monitoring to ensure uniform insulation wall thickness. The material exhibits superior thermal stability, as well as excellent resistance to ozone and oxidation; it maintains stable dielectric strength without softening, melting, or becoming brittle during prolonged high-temperature operation, thereby effectively preventing internal short circuits between conductors.

Elastic silicone rubber filler fills the voids between insulated cores to maintain the cable's roundness; it minimizes friction and impact between cores during bending or vibration and prevents insulation wear caused by long-term internal compression. The binding layer bundles the cores into a unified structure, preventing them from separating during assembly and installation.

An outer sheath made of high-temperature resistant silicone rubber, extruded as a single unit and compatible with the insulation material system; it offers excellent resistance to aging, compression, and abrasion. The sheath withstands long-term thermal radiation, hot air circulation, and occasional high-temperature oil mist exposure within industrial furnaces, effectively protecting the internal insulation structure from external mechanical damage and thermal degradation.

Non-toxic and odorless upon high-temperature heating with low smoke emission; exhibits excellent resistance to ozone, weathering, and radiation; offers moderate resistance to corrosion from water, weak acids, and weak alkaline vapors; maintains flexibility during long-term cyclic bending without fatigue fracture; shows no dripping or decomposition under thermal aging conditions.

Includes standard single-core specifications suitable for internal wiring of most heating elements; offers multi-core configurations (2, 3, 4, and 5 cores) to meet integrated control wiring needs for high-temperature equipment, compatible with single-phase and three-phase heating power distribution and signal interlocking designs.

• Batch factory inspection reports, raw material certificates of conformity, high-temperature aging test reports for finished cables, electrical performance test reports, and product certificates of conformity.
• Applications can be made for CCC mandatory certification, CE, RoHS, and other third-party test certificates to meet requirements for routine domestic factory inspections, industrial project bidding qualification reviews, and export customs clearance for electromechanical products.

1. Superior long-term high-temperature stability unmatched by ordinary cables

   Standard PVC, conventional rubber, and YC-type flexible cables age rapidly, harden, and crack when operated for extended periods in environments exceeding 90°C, leading to insulation failure and short-circuit risks. In contrast, YH silicone rubber high-temperature cables can operate continuously at 200°C for years without structural degradation or loss of insulation performance. This effectively reduces equipment failure rates and maintenance frequency caused by cable aging, thereby lowering after-sales service costs for heating equipment manufacturers and end-users alike.

2. Ultra-wide temperature adaptability—from extreme cold to high heat

   YH silicone rubber retains excellent flexibility and elasticity even at temperatures as low as -60°C, preventing brittleness or cracking in cold workshops, low-temperature drying equipment, or outdoor machinery started during harsh northern winters. Simultaneously, the material withstands prolonged high-temperature radiation inside kilns and ovens, ensuring stable year-round operation under complex conditions with drastic temperature fluctuations—making its application range far superior to that of conventional flexible cables.

3. Flexible, fatigue-resistant structure suited for equipment assembly and vibration-prone environments

   Utilizing ultra-fine stranded conductors and an integrated silicone rubber flexible structure, this design is ideal for manual wiring, automated wiring assembly, frequent maintenance involving disassembly and reassembly, and operating conditions characterized by internal equipment vibration. This structure prevents open-circuit failures caused by conductor breakage from repeated bending, thereby significantly improving assembly yields and long-term operational reliability for heating equipment.

4. Safe and eco-friendly thermal decomposition characteristics

   YH silicone rubber does not release irritating or toxic halogen gases during prolonged exposure to heat, offering low-smoke and non-toxic properties. The material meets the production requirements for food-grade baking equipment, medical heating devices, and eco-friendly industrial workshops; it complies with the RoHS directive for exports, helping manufacturers successfully obtain environmental certifications for their products.

5. Highly Aligned with Factory Inspection and Export Compliance Requirements

   YH-type cable is a model specifically designated by numerous industry standards for the internal wiring of various electric heating devices. Comprehensive test reports and certification documents can be compiled into a complete package to facilitate factory inspections, third-party quality audits, project bid filings, and overseas customs clearance, thereby eliminating obstacles related to compliance issues during sales and export.

• Internal Wiring for Electric Heating Bands and Injection Molding Machinery

  Integrated connection wires for injection molding machine heating bands, wiring for extruder barrel heaters, high-temperature internal wiring for mold temperature controllers, and internal power connections for hot runner systems; widely used in the plastic processing machinery manufacturing industry.

• Wiring for Industrial Ovens, Drying Tunnels, and Kiln Equipment

  Suitable for manufacturers of heat treatment equipment; applications include internal wiring for hot-air circulation ovens, power connections for food baking tunnels, internal wiring for industrial drying furnaces, power distribution wiring for temperature zones in small metallurgical kilns, and heating element connection cables for high-temperature box furnaces.

• Wiring for Electric Water Heaters, Food Processing, and Catering Heating Equipment

  Suitable for internal heating component wiring in commercial ovens, deep fryers, and baking equipment, as well as connection cables for food sterilization and drying systems; fully compliant with food production requirements for non-toxic and low-smoke characteristics, making it ideal for various kitchen heating appliances.

• High-Temperature Internal Wiring for Automation Control Cabinets

  Suitable for high-temperature wiring around high-power contactors, connections near heat sinks, and cables for temperature sensors within electrical cabinets; prevents the accelerated aging of standard control wiring caused by proximity to heat sources, thereby enhancing the long-term stability of the control system.

• Cables for New Energy and Environmental Protection Heat Treatment Equipment

  Suitable for small auxiliary heating circuits in exhaust gas incineration systems, internal wiring for battery thermoforming equipment, and connection cables for solar auxiliary heating components; designed to meet the high-temperature operating requirements of new energy thermal equipment and environmental protection processing systems.

• Cables for Laboratory Instruments and Medical Heating Equipment

  Suitable for internal wiring in high-temperature laboratory test chambers, connection cables for medical constant-temperature heating instruments, and internal assembly wiring for precision small-scale heating equipment; designed to meet the strict requirements for high safety and low contamination associated with precision medical and laboratory instruments.

1. Long-term Component Supply for an Injection Molding Machine Manufacturer

   A major manufacturer of plastic machinery originally used standard high-temperature rubber wiring for the internal circuitry of their injection molding machine heating bands. After 8 to 12 months of operation, the cables frequently suffered from aging and short-circuit failures, resulting in a high volume of after-sales service complaints. Following material comparisons and high-temperature aging tests, the company's R&D department officially selected YH high-temperature silicone rubber cables as a standard component. To meet the demands of the equipment's high-temperature internal environment, we customized a product capable of withstanding continuous temperatures of 200°C. We printed the client's specific model numbers and specifications on the cable jackets and conducted batch-based sampling tests for high-temperature aging prior to shipment. Additionally, we compiled comprehensive RoHS and CE certification documentation to facilitate the export of their finished machinery. After two years of volume application, the rate of equipment failures caused by internal wiring dropped significantly; the two parties subsequently signed an annual framework supply agreement, thereby stabilizing the client's component procurement costs.

2. Electrical Retrofit Project for Food Baking Tunnel Ovens

   A food manufacturing enterprise undertook an electrical upgrade for several continuous baking tunnel ovens. The project required internal cabling capable of withstanding prolonged exposure to high-temperature hot air while meeting non-toxic and low-smoke standards to comply with food safety and hygiene regulations. The design institute specified YH-type high-temperature silicone rubber cables for the heating element and temperature control circuits. We provided pre-production samples for high-temperature performance testing, compiled comprehensive qualification documentation for food safety compliance filings, optimized cutting lengths to minimize assembly waste, and arranged phased deliveries aligned with the equipment retrofit schedule. After a year of continuous operation, all cables remained in excellent condition—showing no signs of aging or hardening—and successfully passed periodic dual inspections for both food safety and electrical safety.

3. R&D and Small-Batch Pilot Production Project for New Energy Thermoforming Equipment

   A company specializing in the R&D of new energy equipment procured various specifications of YH-type high-temperature cables for the internal wiring of its lithium battery thermoforming equipment. The project required cables capable of withstanding long-term operation at 220°C, offering vibration and oxidation resistance, and possessing the product certifications necessary for new energy project tenders. We adjusted the silicone rubber formulation based on the operating parameters to enhance high-temperature and oxidation resistance and utilized a tinned copper conductor structure to suit the equipment's internal high-temperature, high-humidity environment. We also provided detailed high-temperature test data to support their solution validation and the preparation of technical tender documents. Furthermore, we initially supplied small batches for pilot testing; following successful validation, the partnership expanded to volume procurement, ultimately leading to our appointment as the exclusive cable supplier for their subsequent new equipment iteration projects.

• Temperature Rating Selection Must Match Actual Operating Conditions

  Do not use low-temperature rated YH cables in environments subject to prolonged, excessively high temperatures. Instead, verify the continuous operating temperature of internal heat sources and select a model with the appropriate rating (180°C, 200°C, 250°C, or 300°C) to prevent premature aging caused by temperatures exceeding the cable's design limits.

• Control Bending During Assembly and Routing

  Avoid repeated, sharp bending or routing with tight radii at corners. Prolonged, excessive bending can cause fatigue fractures in the individual strands of the internal conductor, leading to intermittent power supply failures within the heating equipment. Adhere to the specified minimum bending radius standards during installation.

• Standardized Procedures for Terminal Crimping and Soldering

  During terminal soldering, soldering temperature and heating time must be strictly controlled; prolonged exposure to high heat can cause the local silicone insulation layer to shrink or sustain damage. When crimping terminals, the correct terminal model must be selected to prevent excessive compression from severing the internal conductor strands, and proper insulation wrapping must be applied to the connection point.

• Layout Design for High-Temperature Heat Source Isolation

  Prolonged direct contact between YH cables and the surfaces of heating elements should be avoided; isolation brackets should be installed during cable routing to minimize the impact of high-temperature thermal radiation and thereby extend the cable's service life. If multiple cables are bundled together, adequate spacing must be maintained to allow for heat dissipation.

• Precautions for Chemical Environments

  YH silicone rubber cables have limited resistance to prolonged immersion in strong solvents or high-concentration oils, as well as to exposure to highly corrosive gases. If usage in environments with frequent oil mist or highly volatile corrosive gases is required, please consult our technical team in advance to arrange for a customized, corrosion-resistant silicone rubber formulation.

• Storage and Inventory Management Guidelines

  Finished cable reels should be stored in a dry, well-ventilated indoor warehouse; avoid prolonged stacking near heating pipes or in high-temperature areas. Measures should be taken to prevent deformation caused by sustained pressure, and care must be exercised during handling and storage to avoid scratching the silicone rubber sheath with sharp objects.

• Post-Installation Inspection Recommendations

  Upon completion of cable installation and assembly, spot checks for continuity and insulation resistance should be performed. This ensures that no damage to the insulation layer or hidden short-circuit points occurred during installation, thereby effectively preventing short-circuit burnout failures when the equipment is put into operation.

• Comprehensive customization solutions aligned with equipment R&D and technical specifications

  We manufacture YH high-temperature silicone rubber cables in a wide range of cross-sectional sizes and single-core/multi-core configurations. We offer customization services based on client equipment designs, including: temperature rating customization, cut-to-length service, custom sheath colors, surface printing (including client part numbers and specifications), tinned copper conductor upgrades, flame-retardant and eco-friendly material modifications, and export-grade wooden reel packaging. Our team of professional electrical engineers provides free consultations on current-carrying capacity verification, selection optimization, and internal wiring layouts for heating equipment designs.

• Rigorous end-to-end quality control system for raw materials and production batches

  We utilize high-purity oxygen-free copper rods and fully certified food-grade or high-temperature specialty silicone rubber as raw materials. Before leaving the factory, every production batch undergoes DC resistance testing, insulation resistance checks, sampling-based high-temperature aging/durability tests, and flex fatigue testing. This ensures consistent, reliable product quality that meets the long-term, high-volume supply requirements of equipment manufacturers.

• Comprehensive One-Stop Documentation Services (Inspection, Bidding, and Export)

  We consolidate factory test reports, raw material certificates, high-temperature performance records, and product certificates of conformity into a complete documentation package. We offer customized document compilation services tailored to various needs—such as routine factory inspections, industrial project bidding, domestic quality audits, and overseas CE/RoHS customs clearance—thereby significantly saving time for procurement teams regarding data organization and qualification verification.

• Flexible Order Volumes and Global Logistics Solutions

  We accommodate a wide range of order sizes, from small-batch sample trials for equipment pre-validation and medium-batch production for distributor inventory to large-scale, centralized deliveries for annual framework agreements with major equipment manufacturers. Domestic door-to-door delivery is available; for overseas exports, we provide sea-worthy reel packaging, container loading arrangements, and coordination of all necessary export customs documentation.

• Expert Technical Team and Responsive After-Sales Support

  Our senior cable engineers provide free professional consulting covering product selection, high-temperature load matching, wiring process optimization, and on-site wiring fault analysis. We respond rapidly to resolve technical issues encountered during equipment assembly and operation, ensuring the continuity of our customers' production schedules and the long-term operational stability of their products.

• Long-Term, Stable Pricing Policy for Strategic Partners

  For manufacturers of electromechanical equipment, electrical distributors, and engineering firms with ongoing, high-volume procurement needs, we have introduced long-term framework agreement pricing, tiered volume discounts, and raw material price-locking schemes. These measures are designed to effectively stabilize procurement budgets and help customers mitigate the risks associated with price fluctuations in raw materials—such as copper and silicone—during long-cycle projects.