Standard vs. “Donut” Flange Covers: The Differences and the Advantages

You may be aware that it’s important to have a covering for flanges—and it’s especially important that this covering be high quality and durable.

But did you know that there’s more than one kind of flange cover? In fact, we at Firwin offer two basic flange cover options: our standard cover, and our “donut” cover. Both are made of the highest quality materials and are reliable and effective, but they differ in several ways.

Let’s examine both, and what makes each unique and beneficial.

Standard Flange Covers

Our standard flange covers are one-piece insulation blankets that cover the flange, wrapping around it and closing through the use of draw strings—which compress the blanket at the edges, pulling it tightly around the flange.

This design allows for flexibility, so that the blanket will cover the flange even if the actual dimensions differ slightly from the assumed ones. This also means that in the case of an adjacent existing flange that restricts the amount of exposed pipe around which the cover is being placed, installation is still possible.

While flexibility and quality are always assured, one disadvantage is that installation can be a bit tricky for someone who isn’t familiar with insulation blanket installation, and can lead to an uneven appearance.

“Donut” Flange Covers

Alternatively, our donut flange covers consist of three parts—the main body cover and two end pieces—and this design allows for easier installation than our standard cover, and a smoother look. For these reasons, the donut flange covers are preferable in certain circumstances, particularly when the aesthetics are especially important and the user prefers a more customized appearance.

However, because of the extra material and design engineering, donut flange covers are more expensive than standard ones. Those who choose these covers are paying a premium for easier installation and a more seamless, smoother look.

Either way, whichever cover you choose, you can rest assured that the design and material quality will never be compromised. Like all of our products, both styles of flange covers are the best of their kind, and deliver exceptional quality every time.

Of course, if you have any questions or would like to know more about which is best for your needs, please don’t hesitate to contact us anytime.