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3M FP301 Series Black Polyolefin Thin-Wall Heat Shrink Tubing
Model: SPB-P475495
3M FP301 Series Black Polyolefin Thin-Wall Heat Shrink TubingThe 3M FP301 Series is a thin-wall heat shrink tubing engineered for insulating and protecting wire splices, cable ends, terminals, and...
3M
Starting at
$14.77
3M FP301-2 Black Polyolefin Thin Wall Heat Shrink Tubing
The 3M FP301-2 Thin Wall Heat Shrink Tubing is a black polyolefin heat shrink tubing engineered to insulate and protect wire and cable connections in electrical and industrial environments. This tubing family is available in expanded inside diameters ranging from 1/4 in. to 2 in., each supplied in a standard 48 in. length, letting installers match the tubing to the size of the cable, splice, or connector being covered. The polyolefin material construction combines flexibility with reliable coverage, shrinking down snugly around cables, splices, and connectors to deliver a low-profile finish without adding excess bulk. Its black color provides a clean, uniform appearance for cable runs and bundles that require a finished, professional look, making it a practical choice for OEM, MRO, and field service applications.
Key Features
- Trade Size Range: Available in expanded inside diameters from 1/4 in. to 2 in., each in a 48 in. length, covering everything from single conductors to larger cable bundles and multi-conductor splices.
- Polyolefin Construction: Made from polyolefin material for reliable insulation and mechanical protection over wires and cable connections.
- Thin Wall Profile: The thin wall design shrinks down to a low-profile, compact finish, reducing bulk compared to heavier-wall tubing while still delivering dependable coverage.
- Black Finish: Supplied in black for standard cable identification, color coding, and a clean finished appearance.
- Heat-Activated Shrink Fit: Shrinks tightly around wires, cable splices, and connectors when heat is applied, creating a secure, conforming layer of protection.
- Versatile Coverage: The range of diameters paired with a consistent 48 in. length makes this tubing suitable for bundling multiple conductors or covering long cable runs and splices of varying sizes.
- Consistent Quality: As a 3M product, this tubing is manufactured to consistent quality standards for dependable field performance.
Technical Specifications
- Refer to manufacturer documentation for complete technical specifications.
Typical Applications
- Wire and Cable Insulation
- Cable Splice and Termination Protection
- Cable Bundling and Harness Organization
- Electrical Panel and Control Wiring
- Industrial and Commercial Wiring Projects
- Connector and Cable End Protection
- Cable Repair and Maintenance
Why 3M?
3M is a recognized supplier of electrical and industrial materials, and this FP301-2 Thin Wall Heat Shrink Tubing family reflects that reputation with its polyolefin construction and thin-wall, shrink-to-fit design. Choosing 3M heat shrink tubing gives installers and technicians a dependable range of diameters to insulate, bundle, and protect wire and cable connections across electrical and industrial applications. With sizes spanning 1/4 in. to 2 in. in diameter at a consistent 48 in. length, plus a black finish, this tubing is easy to integrate into standard cable management and wiring practices for any job scope.
Manufacturer Resources
3M Heat Shrink Tubing & Devices Catalog
Product Specs
- Product Type:
- Heat Shrink Tubing
- Department:
- Electrical
- Product Subgroup:
- Electrical Sleeves
- list_batch:
- SPB-20260922
- Product Material:
- Polyolefin
- Product Color:
- Black
- Product Size:
- 48-Inch x 2-Inch
- Series:
- FP301-2
- Product Group:
- Cable Management & Identification
3M FP301-1/4-48IN-BLACK – Frequently Asked Questions
1) What sizes does the 3M FP301 black heat shrink tubing come in?
The FP301 black polyolefin tubing is offered in four expanded inside diameters, all cut to a 48 inch length: 1/4 in., 3/8 in., 3/4 in., and 2 in. Pick the expanded ID so it slides over the connector or splice before heat is applied, not so it matches the bare conductor.
2) Will 1/4 in. heat shrink tubing fit over a crimped butt splice on 12 AWG wire?
Size by the largest thing the tube has to pass over, which is the crimp barrel, not the wire. The FP301 1/4 in. size is the expanded inside diameter, so it will slip over a small insulated or non-insulated butt splice in that range and then shrink down onto the wire either side. If the barrel or connector lug is bigger than 1/4 inch, step up to the 3/8 in. size.
3) Is this thin wall or heavy wall heat shrink, and when would I want the heavier kind?
FP301 is a thin wall polyolefin tubing. It shrinks to a low-profile finish and is the right choice where bulk matters, like dense panel wiring, terminal strips, and harnesses that have to fit a loom or clamp. Where you need mechanical abrasion resistance on direct-buried or outdoor cable, or an adhesive-lined moisture seal, a heavy wall or adhesive-lined tubing is the better product. FP301 itself is not adhesive lined.
4) Which heat shrink size should I use for a large multi-conductor cable bundle?
The 2 in. expanded inside diameter is the largest FP301 black size, and it is the one meant for larger cable bundles and multi-conductor splices. It comes in the same 48 inch stick as the smaller diameters, so you can cut multiple collars from one piece for a harness.
5) How is this heat shrink tubing supplied, in a roll or cut lengths?
Each size ships as a straight 48 inch piece rather than a spool. That is long enough to cut down into however many collars a job needs, which is why the same 48 inch length runs across every diameter from 1/4 in. to 2 in.
6) What part number do I order for 3/4 inch black 3M heat shrink tubing?
The 3/4 in. size is 3M part FP301-3/4-48IN-BLACK, a 48 inch length of black thin wall polyolefin tubing. The adjacent sizes follow the same pattern: FP301-1/4-48IN-BLACK and FP301-2-48IN-BLACK.
7) Can I use black polyolefin heat shrink for color-coded phase marking?
Black only in this case. FP301 here is supplied in black for a uniform finished appearance on cable runs and bundles, and black is also the common identification choice for conductor ends and splice covers. For phase or circuit color coding you would need the colored versions of the tubing or wrap-on markers instead.
8) Do I need a heat gun, or will a lighter shrink this tubing?
FP301 is heat activated and shrinks tight around wires, splices, and connectors when heat is applied. Use a proper electrical heat gun and work the heat evenly around the tube. An open flame scorches polyolefin and leaves soot on the insulation, so it is not the way to finish a job you want to look clean.
How fast can I get the 3M FP301-1/4-48IN-BLACK delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the 3M FP301-1/4-48IN-BLACK come with a warranty?
Absolutely. The 3M FP301-1/4-48IN-BLACK is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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