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
✔RoHS directive 10 substances

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

Basic Properties

Category	Heat shrink 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 (RE4-B100)
Marking on Surface	See size table
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*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

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

Trade size（mm）	As supplied（mm）		After recovered（mm）			Unit length （min.）（m）	Marking
Trade size（mm）	Inside diameter（min.）	Wall thickness＊（nom.）	Inside diameter（max.）	Wall thickness＊（min.）	Adhesive thickness（nom.）	Unit length （min.）（m）	Marking
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