Heat Shrink Tubing & Cable Accessories
Heat shrink tubing, busbar insulation and 1–35 kV cable accessories for power, rail, telecom and defense markets. Manufacturing since 1998.
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ZZ Heat Shrink specializes in the research, development, production and sale of radiation-crosslinked heat shrink materials and silicone rubber insulating materials. Founded in June 1998 in the Huangshi Economic & Technological Development Zone, Hubei Province, the company established Dongguan Zhizheng Rubber & Plastic Materials Co., Ltd. in Guangdong in 2005.
Our main products include the LRS series of halogen-free flame-retardant heat shrink tubing, the YRS series for automotive oil pipe protection, the SRS series of flame-retardant dual wall tubing, the TLG series for high-speed railway track slabs, the NFR series of non-flame-retardant tubing, the MPG series of busbar protection tubing, heat shrink power cable accessories rated up to 35 kV, and silicone rubber cold shrink power cable accessories rated up to 35 kV. Tubing for special applications can be custom manufactured to customer requirements.
Our production system is certified under the three management standards ISO 9001:2015 (quality), ISO 14001:2015 (environmental) and OHSAS 18001:2007 (occupational health and safety). To serve automotive harness customers, the company passed the IATF 16949 automotive quality management system certification in 2019, and the dual wall tubing used in automotive harnesses has been third-party tested against harness performance requirements. Our core heat shrink tubing products carry UL certification and have been verified by SGS. Automated production equipment and precise testing instruments keep product quality stable and performance reliable, and our engineering team supports custom products and value-added services.
Guided by a people-oriented, honest and trustworthy company spirit, we are committed to quality products, responsive service and dependable technical support.
Products
Heat Shrink Tubing
Single, dual and medium wall plus anti-tracking and high temperature grades. 0.8–50 mm, UL 224.
Cable Accessories
Terminations and joints for 1–35 kV cables, heat shrink and cold shrink.
Busbar Insulation
Slide-on and wrapped covers for 1, 10 and 35 kV busbar. Reduces switchgear clearance.
Specialty Tubing
Automotive fluid-resistant and rail transit grades, IATF 16949 qualified.
Components & Markers
End caps, finger sleeves, molded boots and cable markers.
Questions on sizing or voltage class? Contact our engineers.
Certified Quality
Need original certification documents? Contact our sales team — we respond promptly.
Industries We Serve
What Our Customers Say
"Fast shipping, good quality. Third order this year."
"We ordered 500 termination kits for a substation upgrade near Riyadh. Delivery was on time and the documentation package was complete — CoC, test reports, everything our client needed. Will order again."
"Their YRS tubing passed our internal fluid resistance test on first try. Saved us two rounds of requalification."
"Good price, consistent quality. We have been buying single wall tubing from ZZ for three years now."
"The busbar insulation helped us make our switchgear 30% more compact. Their engineer reviewed our drawings before we ordered."
"Custom printed tubing with our logo. Print doesn't fade even after outdoor exposure. Very happy."
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Tell us your cable size, voltage and environment. We reply within one business day.
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