SUMITUBE™ SA2

[Dual wall, highly water/heat resistant, high shrink ratio flame-retarded heat-shrinkable tubing with meltable adhesive]

■ Watertight sealing with excellent adhesion to automotive grade wire insulations
■ High shrink ratio and eff ective for waterproofing of irregular-shaped objects
■ Effective for sealing of single or multi-wire splices
■ Flame-retarded (outer jacket only)
■ Abrasion resistant

  • moisture resistance Dual
  • Flame Retarded

Applications

  • ■ Waterproof sealing, insulation and reinforcement for harness joints of motor vehicles/electronic devices
    ■ Waterproof sealing of irregular-shaped components or devices used in automotive environments

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Basic Properties

Category Heat-shrinkable tubing
Material Outer : Irradiated cross-linked semi-rigid flame-retarded polyolefin
Inner : Meltable adhesive
Flammability Flame Retarded
Shrink temperature min. 115℃
Shrink ratio min. 75%
Longitudinal change min. -10%
Continuous operating temperature -40 to 130℃
Specifications/Approvals SFP standard (R4-B100)
Marking on Surface See size table
Available colors Black
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*2
Elongation
Heat shock
Heat resistance
Secant modulus
Dynamic cut-through
min. 10.4MPa
min. 300%
225℃ x 4 hours, no crack
130℃ x 7 days, no crack
min. 150MPa
min. 134N
31.7MPa
558%
Pass
Pass
200.8MPa
597.2N
Electrical Dielectric strength
Volume resistivity
min. 19.7kV/mm
min. 1.0 x 1012Ω・cm
22.7kV/mm
1.2 x 1016Ω・cm
Chemical Flammability SAE J1128, self-extinguish within 70 sec., Pass
Splice performance
(on representative
splice configurations)
Testing to SFP internal standard
・Heat aging:        125℃ x 1008 hours
・Heat cycle:        125 cycles, 125℃ (30 minutes) to -40℃ (30 minutes)
・Fluid resistance: 2-hour immersion in: brake fluid, engine coolant,
                           ASTM Reference Oil #3, automatic transmission fluid

Pass
Pass
Pass

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

Sizes

Nominal size(mm) Supplied ID(mm) Recovered ID(mm) Unit length
(min.)(m)
Marking
Inside diameter(min.) Wall thickness*(nom.) Inside diameter(max.) Wall thickness*(min.) Adhesive thickness(nom.)
5.8/1.2 5.80 0.45 1.26 1.20 0.56 1.22 SA2-1
7.5/1.6 7.5 0.60 1.64 1.52 0.76 1.22 SA2-2
10.9/2.4 10.9 0.70 2.40 1.91 1.02 1.22 SA2-3
17.8/4.4 17.8 0.80 4.45 2.41 1.37 1.22 SA2-4
  • *: Including inner adhesive
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