Dual Wall Heat Shrink Tubing

Dual Wall Heat Shrink Tubing, SBRS-(4X)G Model: SBRS-(4X)G Adhesive-lined heat shrinkable polyolefin tubing

SBRS-(4X)G dual wall heat shrink tubing is adhesive-lined shrinkable polyolefin tubing with ability to provide corrosion protection and environmental sealing electrical insulation of wire splices, wire harness bundles, breakouts and connector-to-cable transitions in automotive and marine electrical applications.

Features 4:1 shrink ratio Low longitudinal shrinkage Superior sealing against water, moisture or other contaminants Ideal for sealing and covering of connectors with large diameter differences Inner adhesive bonds to plastics, steel and polyethylene Flame retardant (outer jacket only) Continuous operating temperature: -45℃～125℃ Fully shrink temperature: ≥125℃ Technical Data

Property	Test Method	Standard Performance	Typical Performance
Tensile strength (MPa)	ASTM D 2671	≥10.4	11.5
Elongation (%)	ASTM D 2671	≥200	450
Tensile strength after aging (MPa)	UL224 158℃×168hr	≥7.3	8.5
Elongation after aging (%)	UL224 158℃×168hr	≥100	350
Flammability	ASTM D 2671 B	Self-extinguish within 30s	Self-extinguish within 30s
Dielectric strength (kV/mm)	IEC 60243	≥15	17.5
Volume resistivity (Ω.cm)	IEC 60093	≥1×1014	2.5×1014

Adhesive

Property	Test Method	Standard Performance
Water absorption	ASTM D 570	＜0.2%
Softening point(℃)	ASTM E8	95
Peel strength (PE)	ASTMD 1000	120N/25mm
Peel strength (AL)	ASTMD 1000	80N/25mm

Dimensions

Size		Expanded	After Recovery			Standard Package
inch	mm	Internal Diameter (mm)	Internal Diameter (mm)	Total Wall Thickness (mm)	Adhesive Thickness (mm)	Spool Length (m/spool)
5/32	4.0	4.0	1.0	1.00±0.15	0.40±0.15	200
1/4	6.0	6.0	1.5	1.10±0.15	0.40±0.15	100
5/16	8.0	8.0	2.0	1.50±0.15	0.50±0.15	50
1/2	12.0	12.0	3.0	1.70±0.15	0.50±0.15	1.22 or 25m/roll
5/8	16.0	16.0	4.0	2.00±0.15	0.60±0.15	1.22 or 25m/roll
25/32	20.0	20.0	5.0	2.30±0.25	0.60±0.15	1.22 or 25m/roll
1	24.0	24.0	6.0	2.60±0.25	0.60±0.15	1.22 or 25m/roll
1-1/4	32.0	32.0	8.0	3.00±0.30	0.70±0.15	1.22 or 25m/roll
1-1/2	40.0	40.0	10.0	3.00±0.30	0.70±0.15	1.22 or 25m/roll
2	52.0	52.0	13.0	3.30±0.30	0.70±0.15	1.22 or 25m/roll