Internet #100111209

Model # F10XAD

Store SKU #806812

Store SO SKU #1000091517

0077578030708

1/2 in. x 3 ft. Fiberglass Pipe Insulation

$ 4 97
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Frequently Bought Together

Frequently Bought Together

Product Overview

The Thermwell Products Co., Inc. 1/2 in. x 3 ft. Fiberglass Pipe Insulation is commercial grade and can be safely used immediately exiting furnace or water heater. It is pre-slit and self-sealing and made with reinforced foil and paper wrap.
  • For 1/2 in. pipe, 3 ft. long
  • Can be used on pipes exiting furnace or water heater
  • Fiberglass with reinforced foil and paper wrap
  • Pre-slit and self-sealing tube

Product Overview

Model #: F10XAD
Sku #: 806812
Internet #: 100111209

The Thermwell Products Co., Inc. 1/2 in. x 3 ft. Fiberglass Pipe Insulation is commercial grade and can be safely used immediately exiting furnace or water heater. It is pre-slit and self-sealing and made with reinforced foil and paper wrap.

  • For 1/2 in. pipe, 3 ft. long
  • Can be used on pipes exiting furnace or water heater
  • Fiberglass with reinforced foil and paper wrap
  • Pre-slit and self-sealing tube

Specifications

Dimensions

Maximum compatible pipe size (in.)
.5
Product Depth (in.)
1.875
Product Height (in.)
36.00
Product Length (in.)
1.875 in
Product Width (in.)
1.875

Details

Accessory Type
Insulation
Compatible Pipe Material
Copper
Insulation R-Value
3
Minimum compatible pipe size (in.)
.5
Pipe or Fitting Product Type
Accessory
Product Weight (lb.)
0.3lb
Returnable
90-Day

Warranty / Certifications

Manufacturer Warranty
no

Specifications

Dimensions

Maximum compatible pipe size (in.)
.5
Product Depth (in.)
1.875
Product Height (in.)
36.00
Product Length (in.)
1.875 in
Product Width (in.)
1.875

Details

Accessory Type
Insulation
Compatible Pipe Material
Copper
Insulation R-Value
3
Minimum compatible pipe size (in.)
.5
Pipe or Fitting Product Type
Accessory
Product Weight (lb.)
0.3lb
Returnable
90-Day

Warranty / Certifications

Manufacturer Warranty
no

Questions & Answers

When I m installing Do I need take of that paper and leave just aluminum foil?

To Cover hot pipe. I'm worried if that paper can heat up and burn
Asked by: Ikari
Hi Ikari - You should leave the paper ON unless you have some good reason to take it off. The paper encloses the sharp fiberglass threads and keeps them and your body safer. The edge of paper has an integrated adhesive strip that you can use to hold the two halves of the insulator together. I use Aluminum tape around the circumference instead so I get a tighter fit and to seal the gaps between the 3 ft sections. I did adjust the paper on one of my pieces that was touching the exhaust chimney to prevent it from getting too hot and burning. The bare fiberglass now touches that part of the chimney. Your water/steam pipes should not get hot enough to cause the paper to ignite but if they are then remove the paper or don't insulate them. If they can ignite paper they can also ignite wood so you'll want to reconsider passing those pipes through your flooring.
Answered by: POHR
Date published: 2018-12-19

will this work on chill water lines?

will this work on chill water lines?
Asked by: triscut
Hi triscut - these insulators are intended for Steam Pipe insulation. You might be able to use them for cold water pipes but they probably will not completely eliminate summer condensation and so you'll probably find that the outer paper will show water staining after installation especially close to the place where the water line enters your cellar. The only cure for summer condensation on cold water pipes is to dehumidify your cellar. Pushing relatively colder water into the upper stories of your house in the summer also means that you might have new condensation problems there instead of in your cellar. There are other pipe insulators available that are made from expanded foam that are probably a better choice for cold water pipes since they are non-porous and you can seal them tightly against ambient humidity.
Answered by: POHR
Date published: 2018-12-19

What is the diameter of the hole in this insulation?

Are you basing the description of the pipe, as in the ID is 1 1/4" while the OD is 1 1/2"?
Asked by: glenn32
Hi glenn32, These insulators are sold in various sizes and the product description includes the size of the PIPE that each insulator is made to surround. The fiberglass has a bit of available compression so there is some ability to use 1 1/4" product on a slightly larger diameter pipe though that is not ideal since the entrapped air in the fiberglass is what provides the insulation. If your pipe OD is 1 1/2" then purchase 1 1/2" diameter insulators.
Answered by: POHR
Date published: 2018-12-19

what is the thickness of the walls of this insulation..... 1.25" x 3' x???

Asked by: joe p
Hi joe p, The walls are 1/2" fiberglass and a hair for the paper covering.
Answered by: POHR
Date published: 2018-12-18
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Customer Reviews

1/2 in. x 3 ft. Fiberglass Pipe Insulation is rated 3.6 out of 5 by 53.
Rated 2 out of 5 by from My main problem is that the inside diameter isn't 1.25 inches. It's more like 1.75. I question if... My main problem is that the inside diameter isn't 1.25 inches. It's more like 1.75. I question if the R value is as high as it could be for this reason. If it were sized as described, I'd probably give it 3 or even 4 stars. I wrapped a nearby pipe with the typical product, the separate rolls of fiberglass and plastic, and it's a drag that takes 10 times as long and has a lower stated R value. That's how I can justify this product and its price. Warned by others of the adhesive failing, I used water-activated kraft paper packaging tape over the seams, knowing it's less likely to crap out when exposed to heat (in an attic). It adheres well to the product's exterior paper surface. If there were a better alternative for a hot pipe (or heat tape in my case), I wouldn't recommend this, but I don't know of one. Sometimes you have to improvise.
Date published: 2019-03-19
Rated 4 out of 5 by from This product is a robust molded fiberglass insulation with durable overlapping paper outside with... This product is a robust molded fiberglass insulation with durable overlapping paper outside with an integrated adhesive strip. It comes in various pipe dimensions so the fiberglass can hug various sized pipes. The product cuts easily with a sharp long boxcutter blade.Some downsides are that the paper outside will withstand only so much water. The glue holding the paper to the fiberglass sometimes fails. The Adhesive strip is a bit tricky to use so instead I simply use Aluminum tape around the entire circumference to hold the paper in place and around the seams between pieces. There also isn't a convenient method to cover fittings. These have various shapes and dimensions that would be difficult to mold with this fiberglass. The pieces I bought were made in China however they are not very inexpensive. $22 for just 3 pieces three feet long each so replacing all the asbestos insulation would be a very expensive project. It isn't obvious that insulating these pipes is helping either - more a hope-its-helping effort than actual need.
Date published: 2018-12-18
Rated 5 out of 5 by from I used these to insulate a 3 inch round metal... I used these to insulate a 3 inch round metal duct from a bathroom fan where it passed through the attic. I did it to prevent winter condensation. It was easy to install and works fine.
Date published: 2019-04-23
Rated 3 out of 5 by from Adhesive doesn't hold I had the same problem with the adhesive as mentioned by other reviewers. I installed a few pieces to test it, and less than an hour later they had all come loose. If you are going to install this product, get some foil tape and seal the tubes yourself -- it will save you time and frustration later. Still, even with the taping, it is much easier to install than the rolls of wrap-style insulation. Another problem I had was that the openings of the tubes were larger than marked on the outside. The insulation made for 2 1/2" pipes had an opening that was actually 2 3/4" to 3" in diameter. In order to get them to fit snugly on the pipe, I had to trim them down. You may want to measure these in the store before you buy them and consider getting the next size smaller that whatever the label says.
Date published: 2014-08-18
Rated 2 out of 5 by from Seal does not hold I purchased about 45 pieces of this product in varying sizes. I used it around iron heat pipes in my basement. At first I was very happy with product . I installed all the pieces in about 1.5 hours. The next day I returned to the basement and 90 percent of the pieces popped open. Attempted to reseal three times with similar results. Manufacture offered metal tape and/or replace items. I believe this is unsatisfactory because it does not take into account the time/labor/high product cost in having to redo job several times.
Date published: 2014-01-24
Rated 3 out of 5 by from Home Depot does not stock the corners used to make a clean instillation instead you have to buy a... Home Depot does not stock the corners used to make a clean instillation instead you have to buy a roll of 3 inch wide fiberglass to make your own corners. Because this product does not move off the shelve very fast thus the glue on the seams of the older inventory is dries out causing the seams to come apart so expect to use your own tape. This product works great if it is installed properly you just have to be ready to do a lot taping.
Date published: 2019-01-28
Rated 1 out of 5 by from Not very good Thin and flimsy, paper cover very loose and tape strip thin. Not rigid enough. I got better stuff at a plumbing supply shop and it was cheaper cost. It also came with the end strips for butt joints. Would not purchase again....
Date published: 2016-02-20
Rated 3 out of 5 by from These tubes are easy to install around pipes and keep... These tubes are easy to install around pipes and keep the heat from escaping the pipes on my boiler. I don't like that the glue is very weak and most of my tubes unrolled after a day. I had to buy white thermal tape to reseal the tubes. Some of the white wrapping got loose from the fiberglass too.
Date published: 2019-01-15
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