Nice product at great price
Was wiring my car and had quite a few smaller wires to crimp and cover. This worked great — shrinks clean and consistent every time.
Church's · Verified Purchase★ Verified
Helixal — Professional Heat Shrink Tubing
Helixal — Professional Heat Shrink Tubing
3/32 inch heat shrink tubing fits 20–22 AWG wire — the gauge used for thermocouple extension leads, PCB hook-up wire, LED strip wiring, and e-bike controller signal cables. NFPA 70 Table 310.15 rates 22 AWG at 3A and 20 AWG at 5A; at these current levels, insulation quality and environmental resistance matter more than conductor sizing. At 2.4mm expanded diameter, this tube slides freely over 20 and 22 AWG conductors and recovers to approximately 1.2mm — a firm grip on fine wire insulation without crushing it. The single-wall 2:1 construction, qualified to UL 224, is the correct specification for dry indoor applications: color coding wire bundles, insulating solder joints on PCBs, and organizing control-panel conductors in protected enclosures. When wiring will be exposed to moisture, condensation, or outdoor humidity, step up to the 3:1 dual-wall adhesive-lined version for a hermetic seal. At 120 feet per roll, electronics production shops and panel builders cover this fine-gauge size at one of the lowest per-foot costs available for 20–22 AWG, eliminating repetitive mid-project re-orders.
Click any size to navigate · 120 ft per roll
SKU: B0FJHK3M9X · 3/32" (2.4mm) · 120 ft
High-volume UL listed polyolefin at an honest per-foot cost. The industry standard for color coding, bundling, and dry indoor electrical insulation.
Choose a size where the expanded diameter is 20–30% larger than your wire or bundle. Smaller tubes will slide on easier; slightly oversize is better than too tight.
Cut to length and thread onto the wire before making the splice. The tubing cannot pass over a crimped terminal — position it first, then complete the connection.
Use a heat gun at 90°C or higher for initial shrink, 120°C for full recovery. Work from the center outward. Avoid open flame — it scorches the tubing and creates uneven shrink.
Finished tubing should be tight with no bubbles or lifted edges. No adhesive will appear at the ends — this is single-wall tubing. Confirm even recovery across the full length.
Actual 3/32" tube at full expanded diameter (2.4mm) and after heat recovery. Use this as your fit reference before cutting.
Color-codes conductors in control panels, distribution boards, and wiring harnesses where identification is critical and moisture is not a concern.
Insulates component leads, solder joints, and board-level wiring. Single-wall provides a clean, thin sleeve without added adhesive bulk.
Ideal for 3D printer wiring, robotics, LED builds, and RC applications where large roll volumes keep per-foot cost low.
Covers spliced leads and repaired harnesses on household appliances in dry indoor environments. UL listed material meets installation codes.
Provides mechanical strain relief over solder joints on wire-to-wire and wire-to-component connections in benchtop and production builds.
Organizes and insulates signal wiring, thermocouple leads, and I/O conductors inside dry rated electrical enclosures and panels.
Nice product at great price
Was wiring my car and had quite a few smaller wires to crimp and cover. This worked great — shrinks clean and consistent every time.
Perfect for bulk workshop use
Bought this for my automotive workshop and the 120ft roll is exactly what I needed. Shrinks consistently and cleanly every time. Much better value than small packs.
Professional finish every time
Clean black finish, no bubbles or wrinkles when applied correctly. UL listing is important for commercial electrical work — ticks that box too.
Recovered diameter is approx. 1/2 of the expanded size shown · All sizes ship to USA & Canada