SUMITUBE™ O2B2

CatalogNo.890

[Dual wall heat-shrinkable tubing with meltable adhesive for fixing and waterproofing of straight-shaped objects]
SAE/UL/CSA recognized

■ SAE/UL224/CSA recognized
■ Flame-retarded (PBDE/PBB-free)
■ Flexible
■ Thinner adhesive (than SUMITUBE™ W3B2)
✔RoHS directive 10 substances

Applications

■ Corrosion protection of pipes
■ Waterproof sealing for electronic devices
■ Insulation and protection for wire joints

Basic Properties

Category	Heat shrink tubing
Material	Outer : Irradiated cross-linked flexible flame-retarded polyolefin Inner : Meltable adhesive
Flammability	Flame Retarded
Shrink temperature	min. 110℃
Shrink ratio	min. 50%
Longitudinal change	+1、-10%
Continuous operating temperature	-55 to 125℃
Specifications/Approvals	UL224 　　File No. E75077 Catalog No. SUMITUBE™ O2B2 or 890 　　Rating temperature: 125℃ Rating voltage: 600V CSA C22.2 No. 198.1 　　File No. LR33298 Rating temperature: 125℃ 　　Rating voltage: 600V SAE-AS23053/4 Class 2
Marking on Surface	―
Available colors	Black
Flexibility	Flexible
Environmental Compliance	RoHS,ELV
Industry	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^*1
Mechanical	Tensile strength^*2 Elongation Cold impact Heat shock	min. 10.4MPa min. 250% -55℃ x 3 minutes , no crack 250℃ x 4 hours, no crack	14.4MPa 472% Pass Pass
Electrical	Dielectric strength Volume resistivity	min. 11.8kV/mm min. 10¹⁴Ω・cm	41.1kV/mm 2.11 x 10¹⁵Ω・cm
Chemical	Water absorption Corrosion against bare copper Color stability Fluid Resistance 　Tensile strength 　Dielectric strength Flammability (UL224)	23℃ x 24 hours, max. 1.0% 121℃ x 16 hours, no corrosion 175℃ x 24 hours, no change After immersion in the fluids specified in SAE-AS23053 at 23℃ for 24 hours, min. 6.2MPa min. 7.9kV/mm Flame-retarded, pass, all tubing flame test	0.49% Pass Pass 10.4MPa 38.1kV/mm Pass

Properties

Items

Requirements

Typical values^*1

Mechanical

Tensile strength^*2
Elongation
Cold impact
Heat shock

min. 10.4MPa
min. 250%
-55℃ x 3 minutes , no crack
250℃ x 4 hours, no crack

14.4MPa
472%
Pass
Pass

Electrical

Dielectric strength
Volume resistivity

min. 11.8kV/mm
min. 10¹⁴Ω・cm

41.1kV/mm
2.11 x 10¹⁵Ω・cm

Chemical

Water absorption
Corrosion against bare copper
Color stability
Fluid Resistance

　Tensile strength
　Dielectric strength
Flammability (UL224)

23℃ x 24 hours, max. 1.0%
121℃ x 16 hours, no corrosion
175℃ x 24 hours, no change
After immersion in the fluids specified in
SAE-AS23053 at 23℃ for 24 hours,
min. 6.2MPa
min. 7.9kV/mm
Flame-retarded, pass, all tubing flame test

0.49%
Pass
Pass

10.4MPa
38.1kV/mm
Pass

*1: For reference use only *2: Calculated by using outer cross section

Sizes

Trade size（inch）	As supplied（mm）	After recocered（mm）			Unit length （min.）（m）
Trade size（inch）	Inside diameter（min.）	Inside diameter（max.）	Wall thickness^＊1（nom.）	Adhesive thickness（nom	Unit length （min.）（m）
1/4	6.4	3.20	0.70 ± 0.10	0.10	1.22
3/8	9.5	4.75	0.70 ± 0.10	0.10	1.22
1/2	12.7	6.4	0.80 ± 0.10	0.10	1.22
3/4	19.1	9.5	0.90 ± 0.10	0.10	1.22
1	25.4	12.7	1.10 ± 0.20	0.20	1.22
1-1/2	38.1	19.1	1.20 ± 0.20	0.20	1.22

*1: Including inner adhesive