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)
✔RoHS directive 10 substances
Applications
■ Waterproof sealing for electronic devices with irregular shapes
■ Encapsulation for wire branches
■ Insulation and protection of wire joints
Basic Properties
| Category | Heat shrink 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 (RE4-2081) |
| Marking on Surface | ― |
| Available colors | Black, 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
| Properties | Items | Requirements | Typical Values * |
|---|---|---|---|
| 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 ― |
Sizes
