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Technical Data
Compatible Wire Gauge
FITS 20–22 AWG WIRE
Thermocouple wire, small hook-up wire, LED wiring
Imperial Size
3/32"
Metric Size
2.4mm
Roll Length
60 ft
Shrink Ratio
3:1
Construction
Dual Wall
Inner Layer
Hot Melt Adhesive
Voltage Rating
600V
Temp Rating
-55°C to +125°C
Shrink Temp
120°C (248°F)
Full Recovery
175°C (347°F)
Material
Polyolefin
Flammability
Self-extinguishing
Color
Black
Standards
MIL-DTL-23053/4
UV Resistance
Yes
Waterproof
Yes — adhesive seal
Applications
Electronics repair and PCB wire protection
12V LED strip connections and lighting harnesses
Trailer harness repairs and small connector sealing
Instrumentation and sensor wiring
Typical Wire Types for 3/32"
Why Adhesive-Lined
At these smaller gauges — 20 AWG down to thermocouple wire — moisture wicking along the conductor is the primary failure mode. A standard single-wall tube leaves the splice electrically insulated but still open to capillary ingress. The adhesive liner in Helixal dual wall tubing flows under heat and bonds directly to the wire jacket, blocking any liquid path. For LED harnesses and sensor leads that run outdoors or under dash where condensation accumulates, this single step eliminates the most common source of intermittent faults.
The hot-melt adhesive flows at 120°C and fills every void, bonding to the wire jacket and connector body to block https://www.helixalindustrial.com/products/dual-wall-large/3-32-inchmoisture ingress.
600V rated polyolefin outer wall. Prevents insulation breakdown from vibration, abrasion, and UV exposure over years of service.
Rated from -55°C to +125°C continuous. Does not crack, harden, or delaminate in engine bay heat cycles or cold-weather operation.
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