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
3/16 inch heat shrink tubing fits 12–14 AWG wire — one of the most common gauge ranges in residential branch circuits, automotive lighting, HVAC control wiring, and trailer harnesses. NFPA 70 Table 310.15 rates 14 AWG at 15A and 12 AWG at 20A; ABYC E-11 Table XI uses the same ratings for marine primary wiring in these sizes. At 4.8mm expanded diameter, this tube slides freely over 12 and 14 AWG conductors and recovers to approximately 2.4mm. The 2:1 single-wall construction, qualified to UL 224, is the right option for dry indoor environments — junction boxes, distribution panels, and wire harnesses where insulation quality and clean color coding are the objective. When splices will be exposed to road spray, engine bay moisture, or outdoor weather, the 3:1 dual-wall adhesive-lined version provides the watertight protection that single-wall tubing cannot. At 120 feet per roll, licensed electricians and HVAC technicians get enough tubing to complete a full panel retrofit or lighting circuit installation without ordering again.
Click any size to navigate · 120 ft per roll
SKU: B0FJH87ZV7 · 3/16" (4.8mm) · 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 3/16" tube at full expanded diameter (4.8mm) 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