SUMITUBE™ B2 (3X)

CatalogNo.826

[High shrink ratio flame-retarded heat-shrinkable tubing]
UL/CSA recognized

■ High shrink ratio
■ UL/CSA recognized
■ Flame-retarded (PBDE/PBB-free)
■ Bright colors
✔RoHS directive 10 substances

Applications

■ Insulation, protection and reinforcement of irregularshaped substrates
■ Color identification and bundling for electric wires

Basic Properties

Category	Heat shrink tubing
Material	Irradiated cross-linked flexible flame-retarded polyolefin
Flammability	Flame Retarded
Shrink temperature	min. 90℃
Shrink ratio	min. 66%
Longitudinal change	min. -15%
Continuous operating temperature	-55 to 135℃
Specifications/Approvals	UL224 　　File No. E48762 Catalog No. SUMITUBE™ B2 or 826 　　Rating temperature: 125℃ Rating voltage: 600V 　　Flammability: VW-1 CSA C22.2 No. 198.1 　　File No. LR33298 Rating temperature: 125℃ 　　Rating voltage: 600V Flammability: VW-1
Marking on Surface	―
Available colors	Black, Brown, Red, Orange, Yellow, Green, Blue, Purple, Gray, White
Flexibility	Flexible
Environmental Compliance	RoHS,ELV
Industry	Automotive,Construction machinery,Industrial machinery,Electronics

Gasoline	Gas oil	Lubricant	Alcohol	Acid	Alkali
△	△	△	◎	○	○

Gasoline

Gas oil

Lubricant

Alcohol

Acid

Alkali

△

◎

○

Features

Properties	Items	Requirements	Typical values*
Mechanical	Tensile strength (before aging) Tensile strength (after aging) Elongation (before aging) Elongation (after aging) Heat shock Cold bend	min. 10.4MPa 158℃ x 7 days, min. 7.3MPa min. 200% 158℃ x 7 days, min. 100% 250℃ x 4 hours, no crack -30℃ x 1 hour, no crack	12.1MPa 12.5MPa 440% 450% Pass Pass
Electrical	Dielectric withstand (before aging) Dielectric withstand (after aging) Dielectric breakdown (before aging) Dielectric breakdown (after aging) Volume resistivity	AC2.5kV x 60 sec., no breakdown 158℃ x 7 days, AC2.5kV x 60 sec., no breakdown min. AC2.5kV 158℃ x 7 days, min. 50% of original and min. AC2.5kV min. 1.0 x 10¹⁴Ω・cm	Pass Pass 24.8kV Pass 5.8 x 10¹⁴Ω・cm
Chemical	Corrosion against bare copper Stability against copper Flammability	158℃ x 7 days, no corrosion after leaving under 95% humidity, 23℃ x 24 hours 158℃ x 7 days, elongation min. 100% after leaving under 95% humidity, 23℃ x 24 hours Flame-retarded, pass VW-1	Pass 405% Pass

Properties

Items

Requirements

Typical values*

Mechanical

Tensile strength      (before aging)
Tensile strength      (after aging)
Elongation                (before aging)
Elongation                (after aging)
Heat shock
Cold bend

min. 10.4MPa
158℃ x 7 days, min. 7.3MPa
min. 200%
158℃ x 7 days, min. 100%
250℃ x 4 hours, no crack
-30℃ x 1 hour, no crack

12.1MPa
12.5MPa
440%
450%
Pass
Pass

Electrical

Dielectric withstand      (before aging)
Dielectric withstand      (after aging)
Dielectric breakdown    (before aging)
Dielectric breakdown    (after aging)
Volume resistivity

AC2.5kV x 60 sec., no breakdown
158℃ x 7 days, AC2.5kV x 60 sec., no breakdown
min. AC2.5kV
158℃ x 7 days, min. 50% of original and min. AC2.5kV
min. 1.0 x 10¹⁴Ω・cm

Pass
Pass
24.8kV
Pass
5.8 x 10¹⁴Ω・cm

Chemical

Corrosion against bare copper

Stability against copper

Flammability

158℃ x 7 days, no corrosion after leaving
under 95% humidity, 23℃ x 24 hours
158℃ x 7 days, elongation min. 100%
after leaving under 95% humidity, 23℃ x 24 hours
Flame-retarded, pass VW-1

Pass

405%
Pass

* For reference use only

Sizes

Trade size（mm）	As supplied（mm）		After recovered（mm）		Unit length（min.）（m）
Trade size（mm）	Inside diameter（min.）	Wall thickness（nom.）	Inside diameter（max.）	Wall thickness（nom.）	Unit length（min.）（m）
1.5/0.5	1.50	0.20	0.50	0.50	305
3/1	3.00	0.25	1.00	0.60	152.5
6/2	6.0	0.25	2.00	0.70	61
9/3	9.0	0.30	3.00	0.80	61
12/4	12.0	0.30	4.00	0.85	61
18/6	18.0	0.35	6.00	1.00	61
24/8	24.0	0.40	8.0	1.20	61
40/13	40.0	0.40	13.0	1.25	61