Silicone Cold Shrink Tube

Silicone cold shrink tube for communication is made of silicone material. When in use, you only need to position it and then remove the support tube. The radial pressure is used to form a coating to play a waterproof and moisture-proof sealing role. The silicone cold shrink tube has excellent weather resistance, acid and alkali resistance, and can achieve the effect of breathing sealing. It is an ideal sealing material for communication cables and coaxial cables. It is mainly used for moisture-proof sealing at the joint connection between the antenna and the feeder and the induction line in the antenna feed system of the communication base station.

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Product Description

>> Product Introduction

Communication silicone cold shrink tube is made of high-purity silicone rubber raw material. After positioning the tube on cable joints during construction, simply pull out the internal support tube, the tube will wrap the cable by radial retraction force to realize waterproof and moisture-proof sealing.This silicone cold shrink tube owns outstanding weather resistance, acid & alkali resistance, and provides consistent breathing sealing effect. It is the ideal sealing material for communication cables and coaxial cables, mainly used for moisture-proof sealing of joints between antennas, feeders and wires in communication base station feeder systems.Installation only requires removing the support strip without any auxiliary tools, quick operation and no extra space required, perfectly matching small-space installation scenarios. It achieves IP68 protection grade for reliable moisture and water barrier. Made of imported silicone material, it adapts to all harsh environments with a service life up to 30 years.Core test indicators comply with GB/T528, B/T531 standards: Hardness 40±5 Shore A, tensile strength ≥7MPa, elongation at break ≥610%, tear strength ≥35KN/m; Reliability performance reaches IP68 sealing, wide temperature range -60℃~200℃, UV resistance up to 720h, UL94 V0 flame retardant. Standard sizes cover Φ35~Φ80, all silicone rubber material, black as standard color, custom specifications available for bulk orders.

>> Product Advantage

Premium silicone rubber raw material, self-shrink after removing support tube, form tight radial wrapping for IP68 waterproof & moisture-proof sealing.
Tool-free installation, only pull out internal support strip, compact structure fits narrow space base station construction.
Excellent comprehensive weather resistance: acid & alkali resistant, UV resistant, wide temperature range -60℃~200℃, UL94 V0 flame retardant.
Super high ductility with elongation over 610%, stable breathing sealing without cracking under long-term temperature changes.
Long service life up to 30 years, complete size range Φ35-Φ80 for antenna feeder joints, custom specifications supported for bulk orders.

>> Technical Parameters

Item	unit	Standard
Standard color	--	Black
hardness	Shao A	40±5
Tensile Strength	Mpa	≥7
Elongation at break	%	≥610
Breaking strength	KN/m	≥35

Item	Performance parameters	Test Results
Normal temperature sealing protection performance	IP67	pass
High temperature resistance	200℃	pass
Low temperature resistance	-60℃	pass
UV resistant	UV resistance 720 hours	through
Flame retardant	94-V0	through

Specification	Support tube inner diameter	Applicable connection Minimum outer diameter	Length of silicone tube after expansion	Silicone tube wall thickness after complete shrinkage	Length of silicone tube after shrinkage
Specification	Support tube inner diameter	Applicable connection Minimum outer diameter	Length of silicone tube after expansion	Silicone tube wall thickness after complete shrinkage	Length of silicone tube after shrinkage
Φ24/12x16	Φ24±2	13	13±3	2.3±0.3	≥16
Φ30/10x16	Φ30±2	15	13±3	2.3±0.3	≥16
Φ40/10x60	Φ40±2	20	40±5	2.5±0.5	≥60
Φ70/19x60	Φ70±2	35	40±5	2.5±0.5	≥60
Note: Other specifications can be customized.

>>Applications

Premium silicone rubber raw material, self-shrink after removing support tube, form tight radial wrapping for IP68 waterproof & moisture-proof sealing.
Tool-free installation, only pull out internal support strip, compact structure fits narrow space base station construction.
Excellent comprehensive weather resistance: acid & alkali resistant, UV resistant, wide temperature range -60℃~200℃, UL94 V0 flame retardant.
Super high ductility with elongation over 610%, stable breathing sealing without cracking under long-term temperature changes.
Long service life up to 30 years, complete size range Φ35-Φ80 for antenna feeder joints, custom specifications supported for bulk orders.

>>Selection Guide

Select silicone cold shrink tube size according to the outer diameter of antenna feeder or coaxial cable joint.
Confirm working temperature and UV exposure requirements for outdoor long-term deployment.
Standard sizes Φ35~Φ80 in stock, custom non-standard dimensions available for bulk orders.

>> FAQ

Q1: What protection grade and temperature resistance does this silicone cold shrink tube have?

A1: IP68 waterproof sealing grade, continuous operating temperature -60℃~200℃, pass 720h UV aging test, UL94 V0 flame retardant.

Q2: Is heating required during installation?

A2: No heat or auxiliary tools needed, just pull out the internal support tube, the tube will shrink automatically.

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