Armaflex 1/2 in. x 6 ft. Rubber Self-Seal Pipe Wrap Insulation-HST05812 at The Home Depot
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Model # HST05812

Internet # 100550644

Store SKU # 420373

1/2 in. x 6 ft. Rubber Self-Seal Pipe Wrap Insulation

Armaflex 1/2 in. x 6 ft. Rubber Self-Seal Pipe Wrap Insulation

This item has been discontinued.
The Home Depot no longer carries this specific product.

$5.25 / each


Model # HST05812

Internet # 100550644

Store SKU # 420373

The Armacell 1/2 in. x 6 ft. Armaflex Rubber Self-Seal Pipe Wrap Insulation helps protect your pipes from freezing, mold and condensation. This rubber insulation can fit your copper and iron pipes. Using this insulation helps save energy but preventing heat gain and loss.

  • Designed to insulate copper and iron pipes
  • Helps prevent heat gain and loss
  • Saves energy
  • Contractors’ choice
  • Made of rubber
  • Helps protect pipes from freezing, condensation and mold
  • Fire rated


Accessory Type  Insulation  Assembled Depth (in.)  72 in 
Assembled Height (in.)  1.68 in  Assembled Width (in.)  1.68 in 
Compatible pipe material  Copper  ENERGY STAR Certified  No 
Fire rated  Yes  Manufacturer Warranty  None 
Maximum compatible pipe size (in.)  .5  Minimum compatible pipe size (in.)  .5 
Pipe or Fitting Product Type  Accessory  Product Height (in.)  1.625 in 
Product Length (in.)  72 in  Product Weight (lb.)  .35 lb 
Product Width (in.)  1.625 in  R Value  3.3 
Self-sealing  Yes 


Rated 5 out of 5 by 4 reviewers.
Rated 5 out of 5 by Great product I have a two-zone heating system, and for whatever reason my pipes were frozen upstairs (zone 1), but not downstairs (zone 2). When I wasn't get heat nor cold water (on Zone1)in the kitchen, but I was getting hot water, I figured the pipes were frozen; zone 2 was getting everything. I put these wraps around the pipes in my basement leading outside, ran a heater under my kitchen sink, and in the basement boiler room, and in less than 15 minutes, my pipes were thawed. It would have taken much longer without these insulation wraps. They are easy to maneuver and cut to length size. January 4, 2014
Rated 5 out of 5 by Easy to install - works great This insulation was very easy to install – cut to the correct length, slip around piping, pull the plastic cover off the sealer, and press seal together. It took me 5 minutes to cover an air conditioner pipe. Perfect! November 4, 2009
Rated 5 out of 5 by Quick & Easy This was so easy to install. I have used this many times and have definitely seen the energy savings! April 9, 2010
Rated 5 out of 5 by This insulation is easy to install. This is great insulation. It literally just took me less than 10 minutes to install on my water heater pipes. The self sealing works great, and is forgiving if you don't stick it just right first. I also used one straight piece, even on the 90 degree angles, and around the thicker parts where the shut off valve is. I used some of the leftover to insulate the T&P valve. (Keep it out of the way of the pressure release!) Love this product! March 4, 2012
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Store Exclusive. This item is available for purchase in select stores only.