Heat Shrink End Cap
- CCMT
- CHANGCHUN,CHINA
- Based on the order quantity
- 30,000 per month
1. The product is entirely fabricated from a top-grade PE heat-shrink material that shrinks perfectly in place on the cable end upon heating. The shrinking action closes of moisture, dust as well as other harmful agents that may get into the cable, keeping it in the best condition.
2. Heat-shrink caps can be a good fit for a whole range of cables, both power and communication ones of diameter between 12mm and 200mm, thereby, being a good watertight solution for cables of different sizes.
3. Heat-shrink cable caps are a great time saving since there is only a need for heating to shrink them. Just by giving heat, a long-lasting tight sealing layer is achieved without involving complicated ways of installation.
If cables are left with open ends after sealing during their storage, transfer, and field assembly, moisture, dust, and different types of contaminants can readily find their way into the insides of the cables. As a result, the cables will lose their insulation properties, have their conductors corroded, and even the quality of the upcoming cable jointing and cable termination work will be compromised, all of which will definitely bring about more rework and maintenance costs.
Solution:
Heat-shrink cable end caps, consisting of cross-linked polyolefin heat-shrinkable materials, were developed to meet the need for cable tip sealing and protection. Inside, a hot melt adhesive coating may be done and through heating and shrinking, one gets this cap tightly enclosing the cable tip. This results in a waterproof, moisture-proof, dustproof, and insulating seal which prevents the entry of water, dust, and other impurities into the cable. This helps the cable insulation performance not only to avoid damage but also to prolong the lifespan.
Heat shrinkable cable end caps are used in many applications like power distribution systems, communications, industrial control, construction wiring, and overhead cables running at exposed sites. They can not only protect the end parts of the cables during storage, handling, installation, and running periods but also offer consistent and dependable sealings.
Product Parameters:
Property | Test Method | Standard Value |
Tensile Strength | ASTM-D-638 | ≥12MPa |
Elongation at Break | ASTM-D-638 | ≥300% |
Volume Resistivity | IEC 60093 | ≥1x1013Ω.cm |
Dielectric Strength | IEC 60243 | ≥15kV/mm |
Brittle Temperature | ISO 974 | -40℃ |
Heat Shock | 160℃，4h | No Crack |
Water Absorption(23±2)℃ 24h | ISO 62 | ≤0.1% |
Hardness（Shore A） | ISO 868 | ≥80 |
Product Advantages:
1. Excellent Sealing and Protection Performance.
High-performance hot melt adhesives cover the inner wall of heat shrink caps. This allows for a perfect bonding with the cable's outer sheath after heat shrinking and forms a reliable waterproof, moisture-proof, and dust-proof sealing layer, which effectively stops the ingress of moisture and contaminants to the cable. In parallel, the product's water uptake is ≤0.1% at a room temperature of 23±2℃ over 24 hours, thus proving that there is little moisture absorption even when stored or operated in very humid places.
2. Excellent Insulation and Environmental Resistance.
We use cross-linked polyolefin heat shrinkable material, which possesses excellent electrical insulation properties. Its volume resistivity is ≥1×10¹³Ω·cm, and dielectric strength is ≥15 kV/mm, meeting the insulation strength requirements of power and communication cable ends. Furthermore, the material resists ultraviolet radiation, ozone, oxidation, and various harsh environmental factors, with a low embrittlement temperature of -40℃ (ISO 974). It can also pass a 160℃, 4-hour thermal shock test (without cracking), providing durable protection for the cable and extending its service life.
3. Easy Installation and Suitable for Various Working Conditions.
Heat shrink wire caps begin to shrink at about 90℃ when heated and will completely contract at around 120℃. After being heat treated, they enable quick installation and result in the creation of a strong and reliable seal. They can be effectively used during any step, from cable handling, storing, building, setting up, as well as operating and maintaining. For those reasons, they are employed in the areas of power, telecomunication, factory power supply system and outside cable work.
Product Applications:
1. Power and Communication Cable End Sealing.
Heat shrinkable stoppers help stop moisture, dust and other foreign material from getting into cables. Ideal for shipping cables, storing them, installation or spare parts sealing purposes, these protect the cable insulation and prolong their use.
2. Automotive and New Energy Vehicle Wiring Harness Protection.
As an essential sealant in battery cables, high-voltage wiring, charging interfaces, and power lines, insulation protection is one of its prime functions. These sealing compounds are formulated to resist against oil, water, and physical wear hence increasing the safety and reliability of automotive electric systems.
3. Marine and Ocean Engineering.
Shrink tube caps are an economical solution to protect the ends of waterproof marine cables and wiring harnesses used in marine engineering. When properly applied, the cap creates a watertight seal that prevents seawater, salt mist, high salt level environments (due to seawater evaporation), high humidity from penetrating and corroding the cables thus ensuring the electrical systems run smoothly without interruption.
4. Industrial Equipment and Control Systems.
This product is suitable for industrial cable entry protection such as automation equipment, distribution cabinets, control cabinets, and diverse kinds of electrical appliances. The design of these products is intended to guide wire harnesses neatly and protect the ends from getting wet, thereby preventing corrosion and ensuring the operational safety and maintenance stability of the equipment.
5. Energy Storage and New Energy Systems.
Shrinkable tube caps can be utilized to seal the cable ends in energy storage installations, photovoltaic, wind power, and electric vehicle charging.
They are highly effective in insulating and preventing the intrusion of moisture, and in shielding from adverse environmental influences to both voltage levels for a long period of time outdoors which are the operation conditions of new energy systems.
CCMT's Strength.
Since 1986, our company has been providing insulation and sealing solutions to customers in different industries worldwide. We have been a trusted partner in power transmission and distribution, telecommunications engineering, new energy, rail transportation, and industrial equipment. Our products and services have been used worldwide as one of reliable and stable source of insulation and sealing solutions.
We currently have a modern production base of over 9500 sq. meters with almost half a dozen hundred professional workers at the company, and more than forty manufacturing machines. We have formed an integrated system for manufacturing from raw material researching and developing - through mold making production processing & quality inspection to final product delivery. As a result of our full-scale manufacturing, we could supply the OEMs as well as provide tailored customer solutions with customization options in product size, materials colors, and packaging, etc., to match the different requirements of different products and countries.
Strict Quality Management System.
We strictly adhere to the ISO 9001:2015 quality management system (No. 00123Q36311R5M/2200) in our production, implementing standardized quality control processes from raw material procurement to finished product delivery.
In addition, at present, we have obtained CE EU certification and SGS material safety certification; type test certificates issued by international third-party testing laboratories are also available for the heat-shrinkable cable terminals and fittings, and cold-shrinkable cable terminals and fittings, respectively, allowing us to satisfy the product certification requirements and procurement specifications of engineering projects for multiple countries and regions globally.
Extensive International Cooperation Experience.
Having almost four decades of manufacturing behind us, our long-term cooperation with the internationally famous like ABB, Raychem, and 3M has been made possible due to our reputation for quality products and service. We have supplied 3M dozens of thousands of rolls of OEM tailored insulated tape and given about a million meters of low-voltage heat-shrink tube ABB. Besides that, we ship our goods around the globe, including Europe, the Middle East, Southeast Asia, and South America.
For international procurement, we support various trade methods including FOB, CFR, CIF, and DDP, and can arrange sample delivery according to customer needs, helping customers complete product testing and performance verification before bulk purchases.
Stable Production Capacity and Delivery Guarantee.
Our different product lines have independent production lines. For example, our heat shrinkable end caps production line has 5 molding machines and 3 injection molding machines, with a monthly capacity of up to 30,000 units, meeting the needs of engineering projects and long-term procurement. Delivery time will be arranged comprehensively based on product category, specifications, and order quantity. We will develop a reasonable production plan in conjunction with the customer's project schedule to ensure on-time delivery.
To ensure the safety of product transportation, we use standard export packaging, including inner plastic protective bags, seven-layer export cartons, and pallet stretch film reinforcement, effectively reducing transportation risks during sea freight and multiple loading and unloading processes.
Professional Technical Support and Customer Service.
In addition to a stable product supply, we also value service throughout the entire procurement process.
• At the initial stage of a project, we can provide product information, technical parameters, images, videos, and selection suggestions to help customers quickly complete product selection;
• During production, we can provide feedback on order production progress based on customer needs;
• After product shipment, we can arrange transportation to the customer's designated port and continuously provide technical support and after-sales service, offering long-term guarantees for customer projects.
Continuously Expanding the Global Market.
Being an export-driven manufacturer, we frequently expose ourselves at trade shows here and overseas, in addition, keeping open lines to our worldwide customer base. In the same 32nd Shanghai International Power Equipment and Technology Exhibition in November 2025, for instance, we discussed in detail with power engineering firms, distributors and buyers from Europe, the Middle East, and Southeast Asia the cable insulation and sealing solutions that are most appropriate for different use scenarios at each region. This ongoing sharing of technical knowledge helped us not only to refine our products but also to enhance our ability to deliver services on a global scale.
FAQ:
1. Are heat shrink caps suitable for long-term outdoor use?
Yes, it is manufactured using heat-shrinkable cross-linked polyethylene which not only resists UV radiation, ozone and moisture but also protects against environmental degradation, thus being ideal for outdoor and severe environmental conditions where cable ends require durable sealing protection over an extended period.
2. Does the installation of heat shrinkable end caps require special equipment?
No complicated equipment is required as you can simply use heating tools like a heat gun for installing the product. The material starts to shrink around 90°C and completely shrinks at 120°C. This means that upon heating it, it can instantly be stuck to the end of the cable and thus, a stable and reliable sealing layer will be formed.
