Sumi Tube W3B2/Sumi Tube W3B2 (4X)
Flame-retardant heat shrink tubing with adhesive properties for metals, polyolefins, and PVC, and capable of waterproofing.
The "Sumi Tube W3B2" is a flame-retardant heat shrink tube with adhesive, effective for waterproofing objects with significant step differences, compliant with SAE-AMS/UL/CSA standards. It has adhesive properties for metals, polyolefins, and PVC. It is flexible and flame-retardant (free from chlorine-based flame retardants and specific brominated flame retardants [PBDE, PBB]), and features a thicker adhesive layer compared to the Sumi Tube O2B2. Additionally, the "Sumi Tube W3B2 (4X)" is also available. 【Specifications】 ■ Material… Outer layer: Electron beam cross-linked flexible flame-retardant polyolefin resin Inner layer: Hot melt adhesive ■ Shrink temperature… Above 110°C ■ Shrinkage rate… Inner diameter shrinkage rate of over 60% (W3B2 [4X] is over 75%) Length change rate of over -15% ■ Continuous use temperature… -55 to 125°C (SAE-AMS-DTL-23053 standard: -55 to 110°C) *For more details, please refer to the PDF document or feel free to contact us.
basic information
【Applicable Standards】 ■UL224 Certified File No. E75077 (common to W3B2 and W3B2〔4X〕) Catalog No. SUMITUBE W3B2, SUMITUBE W3B2 (4X) or 891 Temperature Rating 125℃, Voltage Rating 600V, ■CSA C22.2 No. 198.1 (W3B2 only) Certified File No. LR33298 Temperature Rating 125℃, Voltage Rating 600V ■SAE-AMS-DTL-23053/4 Class 3 (common to W3B2 and W3B2〔4X〕) *For more details, please refer to the PDF document or feel free to contact us.
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Applications/Examples of results
【Applications】 ■ Waterproofing for electronic components with large step differences ■ Treatment of wire branching points ■ Insulation protection for wire connection points *For more details, please refer to the PDF document or feel free to contact us.
