Zareba® Ring Insulator - (50 Count)

Model #: BIWSIRB-Z

2 reviews
0 5 1
Zareba® Ring Insulator - (50 Count)

Zareba® Ring Insulator - (50 Count)

Availability : In stock

Price as configured: CDN$29.99


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  • Angled slot ensures wire retention
  • For 9 gauge through 22 gauge high-tensile steel wire and aluminum wire, all polywire (both regular and heavy duty), and polyrope up to ¼ inch in diameter
  • 50 insulators per bag (Black)
  • Service Experts Available To Answer Your Installation Questions

Zareba® Ring Insulator - Pack of 50


Looking for a way to firmly fasten electrified wire to your wooden posts so they don't become loose and lose energy?


Our unique Zareba® Ring Insulator - Pack of 50 fits the bill exactly! These insulators have an angled slot that ensures wire retention. They work with wire and polyrope. These electric fence insulators come in black color only and are packed in a quantity of 50.



Zareba® is the largest manufacturer of electric fence systems offering durable, reliable electric fence products for all of your animal fencing needs.


Zareba® Ring Insulator - Pack of 50 - Specifications

  • Angled slot ensures wire retention
  • For 9 gauge through 22 gauge high-tensile steel wire and aluminum wire, all polywire (both regular and heavy duty), and polyrope up to ¼ inch in diameter
  • Color: Black only
  • Packed in a quantity of 50



Disclaimer: does not endorse any information contained in product reviews. Please follow all label instructions for your specific use.

Most Recent Customer Reviews

Review Rate
Review posted on
October 16, 2016
Don\'t waste your money By SerahRose
In short, these are the worst insulators EVER, and should no longer be in production. A third of these snapped in my hand as I was sinking them into the posts. I was not using anything to apply leverage to them, either, just my hand. Of the ones that did not break upon installation, more than half had broken in the 3 months they've been on the posts. I do not have high tension wire, just temp. electric fence that should put little to no strain on these insulators. If you plan on using these...DON'T!
Response From Woodstreambrands
Tara : Consumer Relations Representative
We apologize for this unusual experience and appreciate the time taken to share your feedback. Our insulators are backed by a one year warranty.

Please contact our Consumer Relations Team at 1-855-5-ZAREBA (1-855-592-7322) for further assistance.
Review Rate
Review posted on
August 7, 2016
Don\'t buy these. By Blackey
I bought these from Tractor Supply and have not been pleased at all. I broke four of them trying to install them in a wooden post. They seem to be very brittle, and will not tolerate any pressure at all.
Response From Woodstreambrands
Patty : Consumer Relations Representative
We apologize for this experience and would like the opportunity to learn more. This insulator is designed to be used with with aluminum or high tensile steel wire (9-22 gauge), both regular and heavy duty poly wire, and poly rope up to 1/4" diameter.

Please contact our Consumer Relations Team at 1-855-5-ZAREBA (1-855-592-7322) for additional assistance. This product is covered by a one year replacement warranty.
Review Rate
Review posted on
June 12, 2016
Insulator By gowngup
Absolutely the worst insulator ever, pulled the first one out and began installing it and it broke! Should have listened to the earlier review to beware. BEWARE! CHEAP! RETURNING!
Review Rate
Review posted on
November 27, 2015
ring insulator By Red Devon
I have used these for a few years and do NOT recommend them. The UV breaks them down with in two years and with any pressure or bumping they break! I have been replacing them often. The most replaced item on our fence system!
Response From Woodstreambrands
Susan : Consumer Relations Representative
Our plastic insulators are designed to be UV resistant. We apologize this was not your experience and appreciate the time taken to share these comments. This valuable feedback has been shared with our Product Managers.

Please feel free to contact our Consumer Relations Team at 1-855-5-ZAREBA (1-855-592-7322) with any questions.
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All About

All About Insulators

Insulators prevent electrical shorts between the electrified wire and the fence posts. Good-quality insulators are critical to a properly functioning fence. Insulators are made from materials that do not conduct electricity, most commonly plastic or ceramic.


Plastic insulators are molded from polyethylene, polycarbonate, or nylon and are designed to hold electrified wire near a variety of posts without losing energy through the post. 

There are several styles to choose from because the insulator must match both the type of wire and the type of fence insulators_plastic_all_aboutpost being used.  Plastic insulators include round post insulators, T-post insulators, wood post insulators, corner post insulators, end post insulators, and chain link fence insulators.  

Make sure the plastic insulator you choose is molded from heavy-duty, high-density polyethylene (or harder plastic) with UV inhibitors. This prevents arcing and provides long life with all-weather performance, protecting it from the weather. Most insulators are available in yellow, black and white.




Like plastic insulators, porcelain insulators are designed to hold electrified wire near fence posts without losing energy through the post. 

When good porcelain insulators are properly installed they should be able to last the life of your fence.

Porcelain insulators are a very good choice for using with your high tensile fence system.



There are specialized insulators that are used for specific purposes. These can be summarized as follows:


Tube Insulators

 • The tube clamp insulator attaches to standard tube-type stock to corral panels.

Corner Insulators

 • Corner post insulators are designed to withstand fence line tension generated by the fence line pulling from the
anchor point or changing directions.

 • Corner insulators should also be used at fence line termination points.

 • Corner post insulators are available in plastic and ceramic and accommodate steel wire, poly wire, poly tape
and poly rope.

Specialty Insulators

 • Other insulators allow you to fasten electrified wire or poly products to posts and fences without losing energy
through the post or fence.

 • There are many specialty insulators to choose from:

• Chain Link

• Tube

• Corner

• U-Post

• Square Post


Expert Tips

Insulators come in many styles to accommodate a wide variety of post and wire types.  Choose the correct type of insulator for the type of post and wire you've selected.

Zareba porcelain insulators

If you're using a low impedance fence charger, use an insulator with greater arcing protection, which will prevent the current from jumping to the fence post.

Porcelain insulators may be more expensive than plastic insulators, but they are designed to last a long, long time, usually the lifetime of your fence!


Plastic insulators can be used with all types of wire (and high tension if it is designated for it), while porcelain insulators can be used with all wires except for poly tape.

Corner posts and end posts have to withstand greater tension than other posts along the fence line.  Therefore, use insulators at these areas that are designed to withstand the extra stress.

In addition, keep insulators free from dirt, dust and cobwebs.


FAQs about Insulators

Q: Do I need insulators for my electric fence system?

A: Insulators allow you to fasten electric wires near the posts without losing energy through the posts and potentially shorting out your system, so yes, definitely use insulators to maintain the current throughout your fence line.


Q: Which type of insulator should I use?

A: There are several factors to consider when determining which type of insulator you want for your electric fence system.  These factors include the type of fence post you will be using, and the type of wire you will be using.  For corners and end posts you will need to know how much tension you plan to have on the wire. 


Q: Is a porcelain insulator better than a plastic insulator?

Zareba porcelain insulator

A: Porcelain insulators are used with high tensile fences as well as standard electric fences. They will last the life time of the fence and add a nice look to the fence. Their only drawback is their initial cost:  Porcelain insulators usually cost more than plastic insulators.

Insulators made from plastic are generally used for standard electric fences only, although there are some designed for use with a high tensile fence.

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