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DEI Heat Shrink Tubing

Black 4-foot length (3-mm diameter)

12 Reviews | 2 questions - 12 answers

Item # 696010837

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Our take on the DEI Heat Shrink Tubing

Heat shrink tubing makes your wiring look neat and professional. DEI's Hi-Temp Shrink Tubing shrinks down when heated to form a tight seal that protects your wire splices and connections from short circuits and moisture. You can also bundle wires together in harnesses without messy electrical tape.

Heat shrink tubing makes your wiring look neat and professional. DEI's Hi-Temp Shrink Tubing shrinks down when heated to form a tight seal that protects your wire splices and connections from short circuits and moisture. You can also bundle wires together in harnesses without messy electrical tape.

These black heat shrink tubes come in 4-foot lengths and are available in 3 mm (approx. 1/8"), 6 mm (1/4"), and 9 mm (3/8") diameters, as well as an assortment package that includes all three sizes. For splicing, use the 3 mm size for 16-gauge wire, 6 mm for 10-gauge, and 9 mm for 8-gauge. Warranty: 30 days.

Really made my install look professional.

Anonymous, Edwardsville, IL

What's in the Box:

  • One 4' length of 3mm diameter heat shrink tubing

DEI Heat Shrink Tubing Reviews

Average Customer Review(s):

(12 Reviews)

DEI Heat Shrink Tubing

Anonymous from Edwardsville, IL on 1/28/2017

Crutchfield Customer Review (What's this?)

Really made my install look professional.



DEI Heat Shrink Tubing

jdsj from Des Moines, IA on 10/10/2016

Crutchfield Customer Review (What's this?)

Works great, never use black tape again.




J from Fall River, MA on 6/12/2016

Crutchfield Customer Review (What's this?)

This is perfect for a standard head unit installation.



heat shrink tubing

DavidS from Georgia on 10/5/2015

Crutchfield Customer Review (What's this?)

Heat shrink tubing makes for a neat installation

Pros: Works great

Cons: a little pricey for the amount you receive

Shrinks when you heat it--what more could you ask for?

Matt from New Jersey on 12/7/2014

Crutchfield Customer Review (What's this?)

Heat shrink is heat shrink. As long as it's flexible enough and shrinks around your connections well enough, it's going to do the trick.



Want a Professional Installation On a DIY Budget?....Then Use This

Frank_M from Nash County, NC on 11/15/2014

Crutchfield Customer Review (What's this?)

Folks...take it from a shop teacher. DON'T use butt connectors, wire nuts, electrical tape, or masking tape (don't laugh, I've seen it). Invest in an inexpensive soldering iron and some solder and splice the wires together using solder and then insulating them with heat shrink tubing (Don't forget to slide the tubing on BEFORE soldering the wires together). Even a hair dryer will work. Take the time to do it right the first time and you won't be sorry. If you don't know how to use a soldering iron then take a few minutes to learn by watching a YouTube video then practicing on some scrap pieces of stranded wire like is used on the harnesses. I'm surprised Crutchfield does not offer an "Educational Section" for just such a purpose.

Pros: Perfect size for most any stereo installation.

Cons: None

DEI heat shrink tubing

MarkW from Ham Lake MN on 8/2/2014

Crutchfield Customer Review (What's this?)

The best price I've encountered for heat shrink tubing. The perfect size for the wires encountered with the wiring harness for the car stereos.

Pros: Correct size. Great price.

Cons: None

DEI Heat Shrink Tubing

Tim from Aurora, CO on 6/20/2014

Crutchfield Customer Review (What's this?)

Perfect for the job

Pros: Worked Great

Cons: None

Thin Wall But Works

EJCUSA1 from Streamwood IL. on 2/9/2014

Crutchfield Customer Review (What's this?)

I use heat shrink tubing like its water. This tubing works but its not the best. I found some that has thicker walls and has a type of sealer in it. Shrinks and seals your solider connections.

Pros: Shrinks fast and stays in place.

Cons: Thin wall, can and will peal.

Just what I was looking for

Anonymous from Santa Rosa, CA on 1/25/2014

Crutchfield Customer Review (What's this?)

Got this for wiring my car receiver. Worked perfectly to cover the soldered wires. I'm not sure how well they insulate(I didn't look), but they fit.

Pros: Easy to use, and perfect for car receiver wires.

Cons: They shrink pretty fast? not that this is a con, but make sure the shrink won't move while you are heating it up. I ended up missing a couple times.

Works like a charm

Jason from Easton PA on 11/26/2013

Crutchfield Customer Review (What's this?)

My lighter ran out of fuel so I was able to shrink these with stick matches with great success.

Pros: easy to use

Cons: none

Seal of Approval

Samanosuke47 from Ripley, WV on 7/7/2013

Crutchfield Customer Review (What's this?)

Works as heat shrink. Able to just use a lighter and it shrinks right up. Holds well. I like it, and seemed to get an ample amount to work with.




Hands-on research

Product Research


Overview: Heat shrink tubing protects electrical connections from elements and allows you to bundle wires without the use of plastic ties or tape to give you a great finished look to your installation. Shrink tubing can be easily installed with an ordinary heat gun. This package contains one 4' length of heat shrink tubing that is 3mm in diameter. It fits up to a single 16 AWG wire.

Note: The Heat Shrink Tubing may not fit all gauge wire listed due to difference in jacket thickness.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

I have used heat shrink tubing on all sorts of different projects and helps keep everything sealed up once i have finished soldering. [ Sean C. S. II  May 10, 2017 ]
I am going for a more professional looking installation and I think heat shrink tubing looks better than wrapping my wires in electrical tape. [ Christopher  Mar 05, 2017 ]
recommended by Norm [ DAVID  Feb 14, 2017 ]
connect harness [ Mark  Nov 17, 2016 ]
Needed these for wiring the aftermarket wire harness to the new head unit. [ Glen  Nov 15, 2016 ]
Solder protection. [ Jeffrey Jay  Sep 17, 2016 ]
always prefer to solder and use shrink tube... better connection. [ Sean  Jun 28, 2016 ]
DEI is known for it's heat resistant products. It fits the 16 guage wire [ Christopher  Jun 01, 2016 ]
After you splice the radio harness, you're left with a bunch of exposed contacts that need to be insulated from each other and the car's chassis. Electrical tape will do the trick, but requires 3 or 4 hands, and may come undone over time. Heat-shrink tubing is the way to go - just remember to put your tubing on *before* you splice! [ Kirt  May 29, 2016 ]
Because electrical tape isn't as clean or last as long as shrink tubing. I got two diameters because I wasn't sure which to get [ Jesse  May 18, 2016 ]
Because I needed some heat shrink. [ STEVEN  May 11, 2016 ]
Because electrical tape isn't as clean or last as long as shrink tubing. I got two diameters because I wasn't sure which to get. [ Jesse  May 18, 2016 ]
Shrink tubing makes for a clean installation when used with soldered connections [ Kent  May 02, 2017 ]
Good way to securely connect conductors. [ Scott  Feb 25, 2017 ]

2 questions already asked

I used it for small gauge speaker wires, but it could have accommodated a much larger wire. I think it would work fine for a head unit. I was very satisfied with the product. [ GINGER  Apr 06, 2016 ]
Worked great on mine. [ Donald  Apr 06, 2016 ]
Yes, that's what I used it for [ dylan  Apr 05, 2016 ]
I used this to wrap the wiring harness to the head unit on a clarion nx404 I believe it was. I soldered the wires, worked great. Nice and clean. [ Joshua  Apr 05, 2016 ]
I just used a lighter, but I had space to work and such, tight areas Idk if I'd have used a lighter or not. I just did a car audio install, so I was able to pull wire out and use the lighter to shrink it. [ Jeremy  Jul 15, 2014 ]
Yes. Either a heat gun of sorts or a butane torch, similar to what you'd use for soldering. Nothing fancy, just something that will activate the shrinking when the heat is applied. However, too much heat in one section will begin to melt it, since it is just plastic. The best way to figure it out is cut about a 3 inch strip of it off and run your heat source over it to get a feel on how it shrinks with what amount of heat. Then remember, you want about a quarter to half inch of material past whatever you're trying to put it on, shrink it and hook it up, then make sure the connection is still good (i.e. from your amps to speakers) and if it is, you're good to hook. Sorry about the in depth, but I figured if you're asking about a tool for it, I might as well describe the process as well. I do hope this helps. [ JUSTUS L  Jul 15, 2014 ]
It is best to use a heat gun, but if you have a hair dryer with a high-heat setting, that may do it for you. Be sure you get a tight, solid hold on the wire(s) if their purpose is to insulate (which is usually the main purpose, but often times I use heat shrink to tightly hold multiple insulated wires). I am not sure the best heat source temperature, but I'd say it'd probably fall in the 500-800 deg F range. Hope this helps. [ KENT DEREK  Jul 14, 2014 ]
A simple cigarette lighter will function just as well as a heat gun. Just wave the lighter across the tubing in a fluid manner avoiding direct heat for excessive periods. [ RYAN  Jul 14, 2014 ]
You can use a hair dryer and it will work OK, but you can also buy heat guns which are basically high-power hair dryers and they work a little better. [ John  Jul 14, 2014 ]
You'll need a heat gun to properly shrink the tubing. [ Robert  Jul 14, 2014 ]
Normally a heat gun, small torch out lighter id's all you need. [ FRANK  Jul 14, 2014 ]
A lighter is all you need. [ BRANDON  Jul 14, 2014 ]

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