Heat Shrinkable Anti-Breakout Boot: 2-6 Core
A molded glove for cable breakouts: one body over the sheath, one finger leg per core, in 2/3/4/5/6-core finger configurations. Cross-linked PE with a hot-melt adhesive lining recovers with heat into a sealed transition where multiple cores leave one sheath: the geometry straight tubes void and tape fights.
Specification
| Material | Cross-linked PE + hot-melt adhesive |
|---|---|
| Core configurations | 2/3/4/5/6-core finger shapes |
| Wall type | Finger shape, adhesive-lined |
| Function | Cable branch sealing protection |
Why the finger shape exists
A breakout is a geometry change, not a straight run: two to six cores leave the sheath and fan out, and a straight tube recovers into voids at the transition: the exact spots where moisture collects and strain concentrates. The boot is moulded with a finger leg per core and a glove body over the sheath, so each finger recovers down its own core while the body seals the sheath exit. The fingers flex to the fan-out angle of your cable, and the adhesive lining flows during recovery to bond the transition. One part replaces the cut-tube-and-tape workaround that leaks at year two.
Specifying the boot
Three inputs select the part:
- Core count : sets the finger count: 2, 3, 4, 5 or 6.
- Cable OD at the sheath : sizes the glove body.
- Largest core ID to close on : per finger, including any connector or lug that must slide through during installation.
The dimension table (body and finger ranges per boot size, supplied/recovered) is being verified for publication: send the three inputs and we return the boot code directly.
Installation orientation and sequence
- Slide the boot on before terminating. Fingers first over the individual cores, body last over the sheath, drawn back out of the working area.
- Terminate the cores : crimp lugs or make the joint as the build requires.
- Draw the boot into position over the transition; seat the body on the sheath.
- Recover with even heat : fingers first, then the body : with enough dwell for the hot-melt adhesive to flow and wet both surfaces.
- Cool before handling. The seal is complete when the adhesive has set, not when the wall merely looks recovered.
Sealing claim, stated plainly
The adhesive-lined recovery seals the transition against moisture and contamination in normal indoor and protected outdoor service. We do not attach an IP rating to the boot as a component: ingress protection belongs to a tested assembly, housing, glands and boot together. If your assembly carries an IP requirement, test the finished assembly; we supply the construction data to support it.
Frequently asked questions
What problem does an anti-breakout boot solve that a tube cannot?
A breakout is a geometry change, not a straight run: two to six cores leave the sheath and fan out, and a straight tube recovers into voids at the transition: the exact spots where moisture collects and strain concentrates. The boot is moulded with a finger leg per core and a glove body over the sheath, so each finger recovers down its own core while the body seals the sheath exit. One part covers a transition that would otherwise need cut tubes, tape and hope.
How do we specify the boot for our cable?
Three inputs: core count (2/3/4/5/6 fingers), the cable OD at the sheath for the glove body, and the insulation OD of the largest core each finger must close on, including any connector or lug that slides through during installation. The fingers are moulded per count; the body and finger diameters are selected from those measurements. Send the three values and we return the boot code.
What role does the hot-melt adhesive play?
The adhesive lining is the seal, not just glue: as the boot recovers, the adhesive melts and flows into the sheath surface and the core insulation, filling the irregularities a tight wall cannot grip. On cooling it locks the seal mechanically. That flow step is why installation needs enough heat and dwell for the adhesive to wet the surfaces. An under-heated boot may look recovered but not be sealed.
Which way does the boot install — before or after the cores are connected?
The boot slides onto the cable before the cores are connected: fingers first over the individual cores, body last over the sheath, all slid back out of the working area while the lugs are crimped or the joint is made. Then the boot is drawn into position over the transition and recovered. If the cores are already terminated, the boot cannot go on: plan it into the assembly sequence.
Does the boot give an IP-rated seal?
We do not claim an IP rating for the boot as a component. The adhesive-lined recovery seals the transition against moisture and contamination in normal indoor and protected outdoor service, but an ingress-protection figure belongs to a tested assembly: housing, glands and boot together. If your assembly carries an IP requirement, test the finished assembly; we support with the boot's construction data.
Where is the boot typically used?
Wherever multi-core cable branches into individual cores: at terminations into panels and motors, at the transition between sheathed cable and single-core lead wiring, and in harness builds where a bundle splits into protected branches. It pairs with our cable accessory kits: the kit insulates the termination or joint, the boot protects the branch transition behind it.
Request a quote for Anti-Breakout Boots
Send core count, cable OD at the sheath and the largest core OD per finger. We return the boot code, quantities and lead time.
Certifications & Compliance
Certificates are supplied per batch on request. Tell us the target market and we align the documentation to your filing.
View our verified UL / SGS / RoHS certificates →
Size range & specification notes
Finger configurations for 2–6 core cable. The body/finger dimension table and temperature values are published after verification: see the DATA_REQUIRED note above.