EPDM Cold Shrink Cable Caps

In the process of cable installation, transportation and on-site construction, the cap may be subjected to external forces such as tension, friction and local extrusion. If the mechanical properties of the rubber material are insufficient, it is easy to cause excessive deformation, edge cracking or local tearing during the stretching process. Once the cap structure is damaged, its original end protection may also be affected.

Our Solutions:

CCMT 's cold shrink cable caps are made of EPDM rubber, focusing on the tensile strength, elongation at break and tear strength of the material, taking into account the tensile strength and deformation adaptability of the material. These properties help the cap to withstand a certain degree of tension during installation, while reducing the risk of mechanical damage caused by local stress, making it suitable for cable end protection scenarios that have certain requirements for rubber flexibility and structural integrity.

EPDM Cold-Shrinkable Cable Cap Specification Table:

Mechanical Properties Analysis of EPDM Rubber Cold Shrink Cable Caps:

1. Tensile strength and flexibility.

Our EPDM rubber cable cold shrink end cap tensile strength ≥ 8.0 MPa, elongation at break ≥ 450 %, so that EPDM rubber has a certain tensile strength and deformation adaptability. This performance combination helps the cap to withstand tensile deformation during installation while maintaining the integrity of the overall structure.

2. Reduce the risk of local tear.

The tear strength of cold shrink EPDM rubber end caps is ≥ 27 kN / m, which can provide performance guarantee for the material to resist crack propagation. In the process of product taking, positioning and assembling, it is helpful to reduce the possibility of tearing of rubber materials in the face of local mechanical stress.

3. Adapt to different cable end sizes.

The higher elongation at break enables the rubber material to withstand greater tensile deformation. Combined with the pre-expansion cold shrink structure, the cap can gradually retract and fit the cable end during the installation process, which is suitable for the cable outer diameter range specified by the product and does not need to be installed by heating.

4. Mechanical properties with standardized test basis.

The tensile strength and elongation at break of EPDM end cap were tested according to ASTM D412-75 standard, and the tear strength was tested according to ASTM D624C-73 standard. Standardized testing provides a reference for buyers to evaluate the quality of rubber materials and compare the technical indicators of different suppliers.

5. The combination of mechanical properties and water resistance.

In addition to mechanical properties, EPDM cold-shrinkable end cap also has the corresponding water resistance. Under the condition of 90 °C water immersion test, the weight increase of 24 hours and 7 days is not more than 5 %. This index can provide a reference for buyers to evaluate the material performance of products in contact with water environment.

Application Scenario Analysis of EPDM Rubber Cold Shrink Cable Caps:

· Underground cable engineering construction preparation.

Underground cable engineering usually involves multiple links such as cable segment transportation, on-site storage and subsequent laying. During construction preparation, the cable end may come into contact with construction materials, handling equipment or other external objects. The EPDM cold shrinkable cap relies on certain mechanical strength and flexibility to provide protection for the cable end during conventional handling and reduce the risk of end damage before subsequent installation.

· Industrial equipment cable maintenance.

In the industrial production environment, motors, control equipment and production machinery usually need to be equipped with spare cables or regularly replace cable assemblies. During equipment maintenance and cable replacement, the cable end may undergo multiple pick-ups, moves, and repositions. Cold shrink cable caps can provide a flexible protective layer for the cable end and reduce the chance of direct external mechanical contact.

· New energy power engineering cable installation.

Photovoltaic power stations, wind farms and other new energy projects usually involve the laying of a large number of power cables and on-site connection preparation. Cables may need to be moved, positioned and temporarily stored for many times during the construction of the project. Cold shrink EPDM rubber end caps can provide mechanical protection for the pretreated cable end and help reduce the risk of end damage during conventional handling and installation.

Why Choose CCMT ? 

The industry has accumulated for 40 years and has a foundation of specialized manufacturing.

Since its establishment in 1986, CCMT has been continuously deepening the field of cable accessories and insulation protection materials, and has accumulated 40 years of experience in material research and development, product manufacturing and industrial application. We have a modern production base of more than 10,000 square meters, equipped with more than 40 production equipment, forming a comprehensive production capacity from material research and development, mold processing to finished product manufacturing.

For rubber products such as EPDM cold-shrinkable cable caps, we have configured five molding machines and three injection molding machines, which can be arranged according to product structure, size specifications and order requirements. At present, the monthly production capacity of cable end cap products can reach up to 30,000, providing customers with continuous and stable batch supply support.

From materials to finished products, establish a complete production and quality control process.

The mechanical properties of EPDM cold shrinkable sealing caps not only depend on raw materials, but also closely related to mold accuracy, molding process and production process control. According to the manufacturing requirements of different products, we have established the corresponding production management and quality inspection process.

The production process covers raw material inspection, material processing, mold forming, product assembly, appearance inspection and finished product inspection. For EPDM cold shrinkable sealing cap, we focus on mechanical properties such as tensile strength, elongation at break and tear strength to ensure that the product technical indicators meet the corresponding requirements.

At present, our company has passed ISO9001 : 2015 quality management system certification ( No.00123Q36311R5M / 2200 ), and has CE, SGS and IEC related certification or test data, and meets RoHS, REACH and other applicable environmental protection regulations.

OEM / ODM customization to meet the product requirements of different projects.

There are differences in cable specifications, application environments and project technical requirements in different countries and regions, and standardized products may not be able to cover all procurement needs. Therefore, we support OEM customization and product specification development.

For EPDM cold shrinkable cable caps, we can communicate around the product size, the outer diameter of the adapted cable and related technical requirements to assist customers in confirming product specifications and technical solutions.

International customer cooperation experience, support multi-industry bulk purchasing.

Relying on long-term experience in product manufacturing and international trade, CCMT has established business cooperation with several internationally renowned enterprises, and its products serve customers in power, cable, industrial manufacturing and related industries.

· RAYCHEM: supply tens of thousands of meters thick three-layer co-extrusion heat-shrinkable composite pipe.

· 3M: Provide tens of thousands of rolls of OEM customized insulation tape.

· ABB: Supply nearly one million meters of low-pressure heat shrinkable tubes.

· SHELL: Provides dozens of tons of potting adhesive products.

At present, our products are sold to overseas markets such as Europe, North America, the Middle East and Southeast Asia, serving cable manufacturers, industrial enterprises and project procurement customers in different regions.

Participate in international professional exhibitions and continue to expand global cooperation.

CCMT actively participates in professional exhibitions in the field of electric power and industry at home and abroad. In recent years, we have participated in the Hannover Messe, Mexico Power Fair, the Middle East Dubai Power Energy Exhibition and Shanghai International Power Equipment and Technology Exhibition.

Through the exhibition exchange, we directly understand the needs of overseas customers in cable accessories materials, product specifications, customized manufacturing and mass procurement, and show the manufacturing capacity, product series and quality management system to international customers.

FAQ:

1. Why is elongation at break important for cold-shrinkable caps?

The elongation at break reflects the degree of tensile deformation that the material can withstand before fracture, and a higher value helps the cap to adapt to a larger expansion deformation during installation.

2. The higher the elongation at break, the better the performance of EPDM cold shrinkable sealing cap?

Not necessarily. The elongation at break needs to be evaluated in combination with tensile strength and tear strength. Only when the mechanical properties are coordinated with each other can the material be more comprehensively judged to be suitable for practical application.