CB-DWT Heat Shrink Dual Wall Tubing

Category: Heat Shrink Busbar Sleeving

Product manual

Material: Outer: crosslinked modified polyolefin resin
Inner layer: hot melt adhesive
Shrink ratio: 2: 1 3: 1 4: 1
Features:
• soft, flame retardant, and environmental protection;
• excellent waterproof, moisture-proof performance;
• Minimum shrink temperature: 80 ℃, Minimum fully recovery temperature: 125 ℃;
• meet UL 224 standards and through VW-1 flammability rating, certification number: E180908

Applications: apply to electronic equipment wiring waterproof, sealed at the wire branch fixed, metal pipe corrosion protection and to prevent the polymer chain relaxation and loosening generated.

Specifications Performance

Specifications	Before shrinkage					After shrinking
	Minimum inner diameter			Wall thickness		Maximum internal diameter				Total wall thickness		Layer thickness
	mm		IN	mm	IN	mm	IN			mm	IN	mm		IN
(Contraction ratio：2:1)
3/64	1.2		0.047	0.30	0.012	0.60	0.024		0.45±0.12		0.018±0.005	0.20		0.008
1/16	1.6		0.062	0.30	0.012	0.80	0.031		0.45±0.12		0.018±0.005	0.20		0.008
3/32	2.4		0.093	0.35	0.014	1.20	0.046		0.55±0.12		0.022±0.005	0.30		0.012
1/8	3.2		0.125	0.40	0.016	1.60	0.062		0.60±0.15		0.027±.006	0.30		0.012
3/16	4.8		0.187	0.40	0.016	2.40	0.093		0.75±0.15		0.029±0.006	0.35		0.014
1/4	6.4		0.250	0.40	0.016	3.20	0.125		0.75±0.15		0.029±0.006	0.35		0.014
3/8	9.5		0.375	0.40	0.016	4.80	0.187		0.80±0.20		0.032±0.008	0.35		0.014
1/2	12.7		0.500	0.40	0.016	6.40	0.250		0.80±0.20		0.032±0.008	0.35		0.014
3/4	19.1		0.750	0.50	0.020	9.50	0.375		0.95±0.28		0.037±0.011	0.40		0.017
1	25.4		1.000	0.50	0.020	12.70	0.500		1.15±0.28		0.045±0.011	0.45		0.017
1-1/2	38.1		1.500	0.65	0.025	19.00	0.750		1.25±0.41		0.049±0.016	0.45		0.017
2	50.8		2.000	0.73	0.029	25.40	1.000		1.40±0.41		0.055±0.016	0.50		0.019
(Contraction ratio：3:1)
1/8	3.2	0.126		0.40	0.016	1.00	0.039		0.85±0.25		0.033±0.010	0.35		0.014
3/16	4.7	0.185		0.40	0.016	1.50	0.059		1.05±0.25		0.041±0.010	0.45		0.018
1/4	6.4	0.250		0.45	0.018	2.00	0.079		1.10±0.25		0.043±0.010	0.45		0.018
3/8	9.5	0.375		0.60	0.024	3.00	0.118		1.45±0.25		0.057±0.010	0.45		0.018
1/2	12.7	0.500		0.60	0.024	4.00	0.157		1.50±0.35		0.059±0.014	0.45		0.018
3/4	19.1	0.750		0.75	0.030	6.00	0.236		2.00±0.45		0.079±0.018	0.65		0.026
1	25.4	1.000		0.75	0.030	8.40	0.331		2.00±0.55		0.079±0.020	0.65		0.026
1-1/4	30.0	1.181		0.80	0.031	10.0	0.394		2.20±0.55		0.087±0.020	0.75		0.030
1-1/2	40.0	1.575		0.85	0.033	13.7	0.539		2.50±0.55		0.098±0.020	1.00		0.039
(Contraction ratio：4:1)
1/4	4	0.157		0.40	0.016	1	0.039		1.00±0.28		0.039±0.010		0.50	0.020
8/2	8	0.315		0.40	0.016	2	0.079		1.10±0.28		0.039±0.010		0.50	0.020
12/3	12	0.472		0.50	0.020	3	0.118		1.40±0.28		0.055±0.010		0.61	0.024
16/4	16	0.630		0.60	0.024	4	0.157		1.78±0.38		0.070±0.010		0.76	0.030
24/6	24	0.945		0.75	0.030	6	0.236		2.25±0.55		0.088±0.020		0.76	0.030
32/8	32	1.260		0.80	0.031	8		0.315	2.54±0.55		0.100±0.020		1.02	0.040

Note: Other sizes can be customized.

Item	Test method	Indicator
Radial Shrinkage	UL224	≥50%
Longitudinal length change rate	UL224	0~10%
Tensile strength	ASTM D2671	≥10.4MPa
Elongation at break	ASTM D2671	≥200%
Hot air aging test	158℃±1.0℃/168h	-
After aging Tensile strength/td>	ASTM D2671	≥7.3MPa
Elongation at break after aging	ASTM D2671	≥100%
Volume resistivity	ASTM D876	≥1.0x1014Ω· cm
Pressure	ASTM D2671	2500V,60s,No breakdown
Water absorption	ASTM D570	≤1.0%