DNC - Dual Layer Cold Shrink Silicone Rubber Sleeve

-40~+90 Uvproof Rainproof RoHS


DNC is made of highly weather-resistant Silicone rubber material. The product and construction quality are improved through the dual-layer design of the built-in rubber ring. It is widely used in various types of cable joint protection for coaxial cables, jumpers, DIN connectors, connectors, N-type connectors, etc. of communication base stations.
Simple and convenient operation methods can be rapid construction without using tools in a narrow environment that does not allow fire sources. The new adhesion ring structure of the inner layer can improve the hardening issues of traditional mastic, and make the protection ability of waterproof insulation and sealing more reliable and durable.

Operating Temperature Range

  • Continuous operating temperature: -40℃ ~ 90℃
  • Storage temperature: -40℃~50℃
  • Storage life recommended: 1 Year


Standard color: black, yellow


  • Anti-Ultraviolet, resistant to Acid and Alkali
  • Excellent mechanical, electrical and waterproof property
  • None heating tools requires
  • Substantially reducing operating time
  • Long lifetime product
  • High ratio shrinkage
  • RoHS compliant

Technical Data

Property Standard Test Method Typical Value
Tensile strength ≥7MPa ASTM D412 ≥9MPa
Elongation at break ≥800% ASTM D412 ≥1000%
Tear Strength ≥25kN/m ASTM D412 ≥35kN/m
Low Temperature Test -40℃/96hr IPX8/12hr pass
High Temperature Test 70℃/96hr IPX8/12hr pass
Temperature Cycle Test -40℃~70℃/48hr IPX8/12hr pass


Part Number I.D. as supplied
I.D. after recovered
Length after recovered
Application Range
DNC3009-115BK 30±1 8.5±2 115 10~26
DNC4010-140BK 40±1 9.5±2 140 12~36

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