Cold Shrinkable Tube for Weatherproofing 12-40mm Connection

Cold shrinkable tube is designed for weatherproofing protection on connections between jumper cable and connector (7-16 DIN, N type or 4.3-10) of wireless equipment, such as RRU, Antenna and Microwave. Comparing with tape sealing protection, cold shrink tube installation is much shorter (15-30 seconds), convenient installation, uniform appearance for acceptance.

Product Features

» High elastic silicone rubber tube structure with mastic built-in for better weatherproofing protection;

» Stable and long life during operation;

» Fast installation, only 15-30 seconds needed to seal one connection;

» Perfect SWR performance approved by telecom operators;

» Good operating capability under extreme cold and hot condition, anti-UV, anti-ozone;

» Much time and labor cost saving;


Product Properties

ItemParameter and ResultTest Method
WaterproofClassPass, IPX7IEC 60529:1989/AMD2:2013/COR1:2019

1 meter depth in water, duration: 30 minutes

Physical and mechanical propertiesShore HardnessA/41/1ASTM D2240-15
Tensile Strength9.66 MPaASTM D412-16 Method A
Elongation930%ASTM D412-16 Method A
Tear Strength28.4 N/mmASTM D624-00
Brittleness Temperature by ImpactPassASTM D746-14,-60℃
Drop TestPass

No damage, deformation, and support tube could be pulled out normally

Drop from height 1.2m on tile floor surface, 3 times to test
FlammabilityHorizontal BurningHBUL 94-2013 Rev.14-2022 Section 7
ElectricityDielectric Strength19.10 KV/mmASTM D149-20 Method A
Performance under harsh environmentMechanical and Waterproof PropertiesNo crack, discoloration, damage or deformation,

IPX7 Pass


1. Dry heat test (IEC 60068-2-2:2008 Test Bb): 90±2℃,168 hours;

2. Low temperature test (IEC 60068-2-1:2008Test Ab): -40±2℃,168 hours;

3. Thermal cycling test: Cycle time:12h/cycle, Cycle index: 10 cycles, Total duration: 120 hours;

4. Damp heat test, cyclic test (IEC 60068-2-30:2005 Test Db):Cycle time:24h/cycle, Cycle index: 10 cycles, Total duration: 240 hours;

5. Damp heat test, steady state (IEC 60068-2-78:2012 Test Cab):Temperature: 75±2℃, Humidity:(95±1) %RH, Total duration: 1000 hours

Aging TestLight Aging Test-UV ExposureNo crack, discoloration, damage or deformation

Grey scale: 4-5

IPX7 Pass

ISO 4892-3:2016Cycle1& ISO 105-A02:1993/Cor.2:2005

Lamp type: UVA-340, 8h UV at (60±3)℃ BPT,0.76W/(m²×nm)@340nm

4h condensation at(50±3)℃ BPT

Exposure duration:1000 hours

Ozone AgingNo crack, discoloration, damage or deformation,

IPX7 Pass

ASTM D1149-16 Method B procedure B1

Temperature: 40±1℃

Ozone concentration:50±5 pphm

Exposure duration: 72 hours

Hailstone Resistant TestNo crack,damage or deformationIEC 61215,φ20mm hailstone falling
MaterialEnvironmental ProtectionRoHS


IEC 62321


TemperatureInstallation Temperature-40℃ ∼ 60℃Refer to “mechanical properties” and “performance under harsh environment”
Operation Temperature-60℃ ∼ 80℃
Stock Temperature-60℃ ∼ 80℃



» Provides excellent physical protection and moisture sealing for telecom connectors and cables.

» Perfect application for remote radio unit connections.

» Cable jacket and sheath repairs.

» Corrosion protection for fittings and couplings.



Product Name: Cold Shrinkable Tube
Product Code: CST45-125-12
Material: Silicone rubber
Inner Diameter of Plastic Core: 45mm
Diameter (after shrink): 12mm
Length (after shrink): 125mm
Application: Sealing 12-40mm connection
MOQ: 1000
Sample Offered: Free at our cost
Shipment Method: Sea way, air way, DHL, UPS, FedEx, etc.
Port of Shipment: Shanghai, China

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