the following example is for you reference.

RUNLIN Cold Shrink Tubing            

RUNLIN Cold Shrink tubing for GSM/4G/5G communication base station is a Series of insulated rubber sleeves which are factory expanded and assembled onto a removable core. the are supplied for field installation In this pre-stretched condition. the core is removed after the tube has been Positioned for installation over a cable connection, terminal lug, etc., Allowing the tube to shrink and form a waterproof seal. It is made of Silicone Rubber material, which have excellent weather resistance, acid and alkali Resistance. The cold shrink tubing is ideal sealing material for the Communication cable, coaxial cable, medium voltage and low voltage power Cables.

Compared with heat shrinkable tube, it is not hard and brittle even if used for a long Time, and  it also can be tight seal and No crack in the case of Cold shrinkage and thermal expansion. It can be used in More harsh environments.

Features:

RUNLIN Cold Shrink TubingAdvantage:

Good performance for sealing and Insulating;

Waterproof, moistureproof, dustproof;

Suit for a wide range of cable size, for indoor and outdoor applications;

Simple and fast installation.

Technical details:

RUNLIN Cold Shrink Tubing Technical data:

Test Item	Unit	Typical Value
Shore A hardness	Shore A	40
Tensile strength	MPa	>=7.5
Elongation at Break	%	>=750
Tear Strength	KN/m	>=30
Dielectric Strength	Kv/mm	20
PerManent set at break	%	<=4
	Ω.Cm	>=1.0x1015

Operation method of useage:

Simple and fast installation.  

No need special tools or heat, no need Hot melt adhesive or adhesive tape to strengthen seal.