SUMITUBE™ W3F2

CatalogNo.843

[Dual wall, flame-retarded heat-shrinkable tubing with meltable adhesive for waterproofing of irregular-shaped objects]
UL/CSA recognized

■ UL/CSA recognized
■ Watertight sealing with good adhesion to metals, polyolefin and PVC
■ Effective for waterproofing of irregular-shaped objects
■ Flame-retarded (PBDE/PBB-free)
■ Flexible
✔RoHS directive 10 substances

Applications

■ Waterproof sealing for electronic devices with irregular shapes
■ Encapsulation for wire branches
■ 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. 60%
Longitudinal change	min. -15%
Continuous operating temperature	-55 to 125℃
Specifications/Approvals	UL224 　　File No. E75077 Catalog No. SUMITUBE™ W3F2 or 843 　　Rating temperature: 125℃ Rating voltage: 600V CSA C22.2 No. 198.1 　　File No. LR33298 Rating temperature: 125℃ 　　Rating voltage: 600V
Marking on Surface	CSA HS X PO MELTABLE LINER 125℃SUMITOMO-K SUMITUBE W3F2 843 125℃
Available colors	Black
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*1
Mechanical	Tensile strength (before aging)² Tensile strength (after aging)² 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	12.0MPa 11.6MPa 438% 425% Pass Pass
Electrical	Dielectric withstand (before aging) Dielectric withstand (after aging) Dielectric strength (before aging) Dielectric strength (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 24.9kV Pass 4.4 x 10¹⁴Ω・cm
Chemical	Corrosion against bare copper Flammability	158℃ x 7 days, no corrosion after leaving under 95% humidity, 23℃ x 24 hours Flame-retarded, pass All Tubing Flame Test	Pass Pass

Properties

Items

Requirements

Typical values*1

Mechanical

Tensile strength      (before aging)*²
Tensile strength      (after aging)*²
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

12.0MPa
11.6MPa
438%
425%
Pass
Pass

Electrical

Dielectric withstand      (before aging)
Dielectric withstand      (after aging)
Dielectric strength        (before aging)
Dielectric strength        (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
24.9kV
Pass
4.4 x 10¹⁴Ω・cm

Chemical

Corrosion against bare copper

Flammability

158℃ x 7 days, no corrosion after leaving
under 95% humidity, 23℃ x 24 hours
Flame-retarded, pass All Tubing Flame Test

Pass
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.）	Wall thickness＊（nom.）	Inside diameter（max.）	Wall thickness＊（nom.）	Adhesive thickness（nom.）	Unit length（min.）（m）
1/8	3.20	0.35	0.60	0.95	0.35	1.22
3/16	4.80	0.45	1.50	1.10	0.60	1.22
1/4	6.4	0.45	2.00	1.20	0.65	1.22
3/8	9.5	0.50	3.00	1.30	0.65	1.22
1/2	12.7	0.55	4.00	1.40	0.75	1.22
3/4	19.1	0.65	8.0	1.60	0.80	1.22
1	25.4	0.75	10.2	1.90	0.80	1.22

*: Including inner adhesive