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Dual-Wall Heat-Shrink Tubing

Dual-Wall Heat-Shrink Tubing | Adhesive-Lined Heat-Shrink Tube is designed for reliable sealing, insulation, and protection of cables, connectors, and electronic components in low-voltage applications. Featuring a flame-retardant irradiated cross-linked polyolefin outer layer and hot-melt adhesive inner layer, the dual-wall structure provides waterproof sealing, moisture protection, vibration resistance, and strong adhesion after heating. It is suitable for cable splicing, connector sealing, damaged insulation repair, electronic component protection, and other applications requiring durable and dependable environmental sealing.

Industry Approvals：

UL224 125℃ 600V

AMS-DTL-23053/4 class 3


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Parameter	Dual-Wall Heat-Shrink Tubing
Construction	Soft flame-retardant irradiated cross-linked polyolefin outer layer + hot-melt adhesive inner layer; dual-layer composite structure, mainly with 3:1 / 4:1 shrink ratios
Core Function	When heated, the outer layer shrinks while the inner adhesive melts and fills gaps, providing sealing and waterproofing, vibration resistance, salt-spray resistance, and adaptability to irregular shapes
Voltage Class	Low-Voltage 600V Class (UL224, 125°C, 600V)
Typical Application	Cable splicing and connector sealing / moisture protection; repair of damaged cable insulation; waterproof and corrosion protection for electronic components

Heat-Shrink Accessories Parameter Table.xlsx

*Data provided on this page is subject to change based on different manufacturers' variances.

Customization Service

We provide flexible OEM customization services, including cable size, core count, conductor structure, insulation and sheath materials, color, length, and packaging. Custom marking options include surface printing, indent printing, logos, icons, branding, and sequential marking to meet project-specific identification, traceability, and branding requirements.

A	What cable accessories do you supply?
Q	Our cable accessory range includes heat-shrinkable cable termination kits, cold-shrinkable termination kits, cable joint kits (straight-through and transition), cable glands, cable lugs and connectors, cable ties (nylon and stainless steel), cable markers, cable trays and trunking, cable cleats, and insulating tapes. We provide complete solutions for cable installation and termination.
Q	What voltage levels are your cable accessories suitable for?
A	Our cable termination and joint kits cover low voltage (1kV), medium voltage (10kV, 20kV, 35kV) and high voltage (66kV-220kV) applications. We offer both indoor and outdoor termination kits, as well as straight-through and branch joints for various cable configurations.
Q	What is the difference between heat-shrink and cold-shrink accessories?
A	Heat-shrink accessories require a heat gun to shrink the tubing onto the cable, providing a tight, reliable seal. They are cost-effective and widely used. Cold-shrink accessories are pre-expanded and placed over the cable, then the supporting core is removed to allow the silicone rubber to shrink naturally. Cold-shrink is faster to install, requires no special tools, and is preferred in hazardous or confined spaces where open flames are not permitted.
Q	Are your cable accessories compatible with all cable types?
A	Our accessories are designed to be compatible with XLPE-insulated, PVC-insulated, EPR-insulated and rubber-insulated cables. Each kit is sized for specific cable cross-section ranges. Please provide your cable type, cross-section and voltage rating so we can recommend the correct kit.
Q	How do I select the correct termination kit?
A	To select the correct termination kit, you need to provide: (1) cable type and insulation material, (2) cable cross-section (mm²), (3) system voltage, (4) indoor or outdoor installation, and (5) whether it is a termination or joint application. Our sales team will help you select the right kit based on these parameters.
Q	Do you provide installation instructions for cable accessories?
A	Yes. Each termination and joint kit comes with detailed installation instructions including step-by-step diagrams, required tools, and safety precautions. We can also provide video installation guides and remote technical support. For large projects, we can arrange on-site installation guidance upon request.
Q	What materials are your cable glands made of？
A	We offer cable glands in brass (nickel-plated), stainless steel (304/316), and nylon (PA66). Brass glands are standard for most industrial applications, stainless steel glands are used in corrosive or marine environments, and nylon glands are suitable for light-duty and indoor applications. IP66 and IP68 rated glands are available for waterproof and dustproof requirements.
Q	Do you offer stainless steel and nylon cable ties?
A	Yes. We offer self-locking nylon cable ties in various lengths, widths and colors (including black UV-resistant and natural), as well as self-locking stainless steel cable ties in 201 and 304 grades. Stainless steel ties provide superior strength and corrosion resistance for harsh outdoor and industrial environments. We also supply reusable (releasable) nylon ties and mounting bases.
Q	What is the minimum order quantity for cable accessories?
A	For standard cable accessories such as glands, lugs and ties, the MOQ is typically 100-500 pieces depending on the item. Termination and joint kits have lower MOQs as they are complete assemblies. We can discuss flexible options for trial orders and mixed container loads.
Q	Can I get samples of cable accessories before ordering?
A	Yes. We provide samples for evaluation. Standard samples are typically available within 3-5 working days, and the sample cost will be returned or deducted from your bulk order. Shipping costs are discussed case by case.

One-Stop Electrical Power Products

Founded in 2004, Tangshan Yaogu specializes in the manufacturing and supply of electrical equipment, including cables, distribution boxes, circuit breakers, and complete electrical accessories.

With advanced production facilities, strict quality control, and integrated R&D, manufacturing, and service capabilities, we provide reliable electrical solutions for industrial, construction, and infrastructure projects worldwide. Committed to quality, innovation, and long-term partnerships, we deliver high-performance products and professional support to global customers.