SUMITUBE™ W3C

CatalogNo.842

[Dual wall heat-shrinkable tubing with meltable adhesive for waterproofing of irregular-shaped objects]

■ Watertight sealing with good adhesion to metals, polyolefin and PVC
■ Flexible
■ Thicker adhesive (than SUMITUBE™ O2C)

  • moisture resistance Dual
  • Non Flame Retarded

Applications

  • ■ Waterproof sealing for electronic devices with irregular shapes
    ■ Encapsulation for wire branches
    ■ Insulation and protection of wire joints

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Basic Properties

Category Heat-shrinkable tubing
Material Outer: Irradiated cross-linked flexible polyolefin
Inner: Meltable adhesive
Flammability Non Flame Retarded
Shrink temperature min. 115℃
Shrink ratio min. 60%
Longitudinal change min. -15%
Continuous operating temperature -55 to 105℃
Specifications/Approvals SFP standard (R4-2081)
Marking on Surface
Available colors Black, Brown, Red, Orange, Yellow, Green, Blue, Purple, Gray, White, Clear
Flexibility Flexible
Environmental Compliance RoHS,ELV
Industry Automotive,Construction machinery,Industrial machinery,Electronics

Oil/Chemical resistance (room temperature)

Gasoline Gas oil Lubricant Alcohol Acid Alkali

:Very good :Good :Not applicable in some cases

Features

Properties Items Requirements Typical values*1
Mechanical Tensile strength      (before aging)*2
Tensile strength      (after aging)*2
Elongation                (before aging)
Elongation                (after aging)
min. 10.4MPa
136℃ x 7 days, min. 7.3MPa
min. 200%
136℃ x 7 days, min. 100%
13.9MPa
12.9MPa
562%
500%
Electrical Dielectric withstand
Volume resistivity
AC2.5kV x 60 sec., no breakdown
min. 1.0 x 1014Ω・cm
Pass
1.6 x 1016Ω・cm
Chemical Corrosion against bare copper
Flammability
121℃ x 16 hours, no corrosion
Flammable
Pass

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

Sizes

Nominal size(inch) Supplied ID(mm) Recovered ID(mm) Unit length(min.)(m)
Inside diameter(min.) Wall thickness*(nom.) Inside diameter(max.) Wall thickness*(nom.) Adhesive thickness(nom.)
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
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