Composite Heat Shrink Tubing | Supplier of Heat Shrink Products

Heat Shrinkable Semi-conductive/insulation Tube

Our composite heat shrink tubing is extruded, irradiated, and expanded to form a dual-wall structure of conductive and insulation materials. The red insulation layer guarantees insulation strength, while the black semi-conductive layer restores electronic shielding. It is suitable for electronic systems up to 42kV.

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Dimensions

	As Supplied (mm)		After Recovery (mm)
	Inside Diameter	Wall Thickness	Inside Diameter	Wall Thickness
Ø30/12	≥30	2.8±0.3	≤12	5.8±0.3
Ø35/13	≥35	2.5±0.3	≤13	5.8±0.3
Ø45/16	≥45	2.3±0.3	≤16	5.8±0.3
Ø50/16	≥50	2.0±0.3	≤16	5.8±0.3
Ø55/21	≥55	2.2±0.3	≤21	5.8±0.3
Ø60/21	≥60	2.0±0.3	≤21	5.8±0.3
Ø65/26	≥65	2.3±0.3	≤26	5.8±0.3
Ø70/29	≥70	2.9±0.3	≤29	7.2±0.3
Ø75/29	≥75	2.8±0.3	≤29	7.2±0.3
Ø80/29	≥80	2.7±0.3	≤29	7.2±0.3
Ø85/29	≥85	2.7±0.3	≤29	7.2±0.3
Ø90/29	≥88	2.5±0.3	≤29	7.2±0.3
Ø100/38	≥100	2.9±0.3	≤38	7.2±0.3
Ø120/45	≥120	2.9±0.3	≤45	7.2±0.3

Technical Data of Insulation Layer

Properties	Test Method	Performance
Tensile strength	GB1040	≥12MPa
Ultimate elongation	GB1040	≥400%
Tensile strength after aging (heat aging 130℃, 168h)	GB7141/130℃,168hrs	±20％
Ultimate elongation after aging (heat aging 130℃, 168h)	GB7141/130℃,168hrs	±20％
Volume resistivity	GB1410	≥10¹³ Ω·cm
Dielectric strength	GB1408	≥25kV/mm

Technical Data of Semi-conductive Layer

Properties	Test Method	Performance
Tensile strength	GB1040	≥10MPa
Ultimate elongation	GB1040	≥300%
Tensile strength after aging (heat aging 130℃, 168h)	GB7141/130℃,168hrs	±20％
Ultimate elongation after aging (heat aging 130℃, 168h)	GB7141/130℃,168hrs	±20％
Volume resistivity	GB1410	≤10³ Ω·cm