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Heat Shrink Tubing - 1 in ID x 6 in L - 3:1 adhesive-lined black - Techspan 669944
SKU: TEC-669944
Adhesive-lined dual-wall heat shrink tubing for sealing and insulating larger wire splices, terminals, and cable breakouts. This 1 in ID x 6 in L black tube uses a 3:1 shrink ratio to provide a tighter fit over irregular connections and added moisture resistance for automotive, marine, and industrial work.
What this product is for
This adhesive-lined heat shrink tubing is used to seal, insulate, and mechanically support electrical connections where moisture resistance and strain relief matter. It is commonly used over splices, lugs, terminals, and cable transitions.
Use for
Use for automotive wiring, marine wiring, equipment repair, panel work, and industrial cable protection where a sealed shrink fit is needed. The 3:1 shrink ratio helps cover larger connectors and recover down onto smaller cable diameters.
Avoid for
Avoid using where a non-adhesive sleeve is preferred for easy re-entry, or where the recovered size range does not match the cable or connector. Do not treat it as a substitute for a listed splice kit where code or application requires one.
Best for
Best for electricians and technicians who need a short adhesive-lined section for sealing exposed terminations, reducing moisture ingress, and adding abrasion protection. It is especially useful on uneven shapes where a 2:1 tube may not recover tightly enough.
Installed in
Typically installed in vehicles, trailers, boats, control panels, machinery, outdoor cable repairs, and general electrical maintenance. Commonly shrunk with a controlled heat gun for even recovery and adhesive flow.
Why this product exists
Standard heat shrink insulates, but adhesive-lined dual-wall tubing also seals the connection as it shrinks. That added inner adhesive helps limit moisture entry and supports longer service life in harsher environments.
Compared with similar products
Compared with non-adhesive tubing, this product provides better environmental sealing and vibration resistance. Compared with lower shrink ratios, 3:1 tubing typically fits a wider range of connector and cable sizes. Actual fit depends on the connection profile and installation method.
Specifications
Brand: Techspan
Manufacturer part number: 669944
Product type: heat shrink tubing
Construction: dual-wall, adhesive-lined
Shrink ratio: 3:1
Colour: black
Inside diameter before shrink: 1 in (25.4 mm)
Length: 6 in (152 mm)
Format: precut piece
Aptico Supply Delivery
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Local delivery routes, pickup options, and contractor-focused service from our Elmira and Flesherton locations.
Delivery Built Around Electrical Contractors
Aptico Supply helps electricians, contractors, and commercial buyers get the electrical materials they need without unnecessary delays. Whether you are ordering for a jobsite, restocking service inventory, or arranging pickup, our delivery options are designed to keep work moving.
Free Daily Delivery
Free daily delivery is available for larger contractor accounts.
- Order by 9:00 AM for morning delivery
- Order by 2:00 PM for afternoon delivery
- Available in qualifying local delivery areas
Free Weekly Delivery
Free weekly delivery is available for smaller accounts in select service areas.
- Elmira area delivery: Tuesday
- Flesherton area delivery: Thursday
- Order by 11:00 AM on the route day
Pickup Options
Pickup is available from our Ontario locations for customers who prefer to collect their order directly.
- Elmira pickup available
- Flesherton pickup available
- Call ahead for large or special-order items
Local Delivery Areas
See our local delivery coverage below. Delivery charges may apply outside regular route areas or for oversized items.
Delivery Questions
Do you offer free delivery?
Yes, free delivery is available for qualifying contractor accounts and selected local delivery routes.
Can I pick up my order?
Yes, pickup is available from our Elmira and Flesherton locations.
Do delivery charges apply?
Delivery charges may apply outside regular local routes, for smaller orders, or for oversized and heavy items.
Can you deliver to jobsites?
Yes, jobsite delivery may be available depending on the order size, location, and delivery schedule.
Need Electrical Supplies Delivered?
Contact Aptico Supply to confirm your delivery options, pickup availability, or contractor account eligibility.
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