Cold Shrink Breakout — Ultimate Waterproof Protection for Cable Branches | Easy, Safe & Reliable

Description:

Made of high-quality silicone rubber, it automatically shrinks when the inner core is removed — forming a tight, waterproof seal around each cable branch.
No heat, no adhesive, and no complicated installation steps — just a fast, reliable way to protect your electrical and communication systems.

Features

• Self-shrinking installation — no heat gun or flame required. The built-in core simply unwinds, allowing the silicone body to contract naturally around the cable, ensuring even pressure and a uniform seal.

• Superior waterproof performance — forms a seamless barrier that keeps out moisture and dust, preventing corrosion and electrical leakage at critical cable joints.

• Excellent weather and UV resistance — the silicone material maintains elasticity even under extreme sunlight, rain, or temperature changes, making it ideal for outdoor and long-term use.

• High insulation reliability — ensures consistent electrical performance under voltage stress, minimizing risk of short circuits.

• Easy and time-saving — one-person installation in minutes, with no need for special tools or training.

• Durable and low-maintenance — long service life reduces replacement costs and downtime for maintenance crews.

Application

• Power cable branch sealing — used at the junctions of multi-core cables to provide insulation and waterproofing in power distribution systems.

• Telecommunication and signal cables — prevents signal loss and protects cable ends in outdoor or base station installations.

• Industrial and outdoor electrical boxes — ensures reliable sealing against rain, dust, and mechanical stress.

• Antenna, lighting, and control cables — offers strong environmental protection in rooftop, tunnel, and roadside setups.

• Marine and underground cabling — suitable for high-humidity or buried environments where traditional heat-shrink tubes fail due to poor sealing.

  Voltage	Model	Suitable cable section area(mm²)	Cable core insulation OD(mm²)
  For 12/20KV 3cores indoor/outdoor terminators (N/W) and middle connector(J)	LSN/W/J-3/1	35~70	19.3~22.1
  	LSN/W/J-3/2	95~185	23.7~28.4
  	LSN/W/J-3/3	240~400	30.7~35.6
  	LSN/W/J-3/4	500~800

  
  

  
  

  
  

  
  

Hengyang ZK Industrial Co., Ltd. mainly specialize in manufacturing and exporting cold shrink series sealing products, including customized processing machines and products kits, for examples: processing winding and expanding machines, spiraling strip/tube supporting material, EPDM cold shrink tube and silicone cable accessories kit in telecommunication and electrical power industry.

Our products have been exported to America, Australia, Egypt, Taiwan, India, Indonesia, Egypt, Spain, Italy and Germany etc, Europe countries. Currently, we already cooperated many famous companies in electrical and telecommunication industry.